Optical detection device and optical detection method of perovskite assembly

Abstract

The invention discloses an optical detection device and an optical detection method of a perovskite assembly. The optical detection device comprises a light source which is used for generating light of a preset wave band; the first optical system is used for adjusting emergent light of the light source into a collimated linear light source and irradiating the collimated linear light source onto the perovskite component; the second optical system is arranged on the light outlet side of the first optical system, the light inlet face of the second optical system is opposite to the light outlet face of the first optical system, and the second optical system is used for converging and collecting light; and the data processing system is connected with the second optical system and is used for determining the state of the perovskite assembly according to the light collected by the second optical system. The method can accurately determine the position of the defect or the impurity.

Description

Technical Field

[0001] The present invention relates to the technical field of perovskite solar cell detection, and in particular to an optical detection device and an optical detection method for a perovskite component. Background Art

[0002] Perovskite solar cells have great application prospects in many fields due to their excellent photophysical properties and inexpensive solution preparation process, such as photovoltaics, lasers, light-emitting diodes and displays. However, perovskite materials are prone to a large number of defects during the production process, which will seriously affect their photoelectric performance and stability, which also limits the further application of perovskite materials. The defect states of perovskite photovoltaic modules are mainly concentrated in the perovskite photoactive layer and the upper and lower interfaces. A large number of defect passivation processes have been developed and made great progress in devices prepared in the laboratory.

[0003] However, the traditional laboratory passivation process and characterization strategy are difficult to be effectively applied in industrial production, which limits the characterization of the defect state distribution of perovskite photovoltaic modules. This also makes it extremely difficult to evaluate the existing defect state process and further optimize the preparation process. In the related art, optical detection devices can be used to achieve high-efficiency and high-throughput detection. However, the optical detection devices in the related art still have problems such as low detection efficiency and inability to accurately determine the location of defects or impurities. Summary of the invention

[0004] The present invention provides an optical detection device and an optical detection method for a perovskite component, so as to improve the detection efficiency and accurately determine the location where defects or impurities exist.

[0005] According to one aspect of the present invention, there is provided an optical detection device for a perovskite component, comprising:

[0006] A light source, the light source is used to generate light of a preset wavelength band;

[0007] A first optical system, the first optical system is used to adjust the output light of the light source into a collimated line light source and irradiate the collimated line light source onto the perovskite component;

[0008] a second optical system, the second optical system being arranged on the light exiting side of the first optical system, and the light incident surface of the second optical system being opposite to the light exiting surface of the first optical system, and the second optical system being used for converging and collecting light;

[0009] A data processing system is connected to the second optical system and is used to determine the state of the perovskite component based on the light collected by the second optical system.

[0010] Optionally, the optical detection device of the perovskite component further includes:

[0011] A conveying system, the conveying system is disposed between the first optical system and the second optical system, and the conveying system is used to convey the perovskite component;

[0012] A transposition system, wherein the transposition system is arranged on a side of the transmission system away from the first optical system; the transposition system is used to rotate the perovskite component by a preset angle.

[0013] Optionally, the first optical system comprises a fiber collimator, a first cylindrical lens and a second cylindrical lens; the fiber collimator is connected to the light source via an optical fiber;

[0014] The first cylindrical lens is located between the optical fiber collimator and the second optical system, and the second cylindrical lens is located between the first cylindrical lens and the transmission system;

[0015] One of the first cylindrical lens and the second cylindrical lens is a first plano-convex cylindrical lens, and the other is a first plano-concave cylindrical lens.

[0016] Optionally, the first optical system further includes an aperture, which is disposed between the first cylindrical lens and the second cylindrical lens and is used to control the length of a light spot corresponding to the light beam between the first cylindrical lens and the second cylindrical lens.

[0017] Optionally, the transposition system includes a telescopic mechanism, a rotating mechanism and a carrying platform;

[0018] The carrying platform is used to carry the perovskite component; the telescopic mechanism is fixedly connected to the carrying platform, and the telescopic mechanism is used to control the rise and fall of the carrying platform; the rotating mechanism is fixed to one end of the telescopic mechanism away from the conveying system, and the rotating mechanism is used to rotate the carrying platform to the preset angle.

[0019] Optionally, the optical detection device further includes a first position sensor, which is disposed on a side of the conveying system close to the transposition system, and is used to detect the position and angle of the perovskite component and the transposition system.

[0020] Optionally, the second optical system includes a second plano-convex cylindrical lens, a second plano-concave cylindrical lens and a light collector;

[0021] The second plano-convex cylindrical lens is disposed between the second plano-concave cylindrical lens and the transmission system;

[0022] The light collector is arranged on a side of the second plano-concave cylindrical lens away from the first optical system;

[0023] The data processing system is connected to the light collector.

[0024] Optionally, the optical detection device of the perovskite component further includes a filter, and the filter is arranged between the second plano-concave cylindrical lens and the light collector.

[0025] According to another aspect of the present invention, there is provided a method for optically detecting a perovskite component, which is performed by the optical detection device for the perovskite component as described above. The method for optically detecting a perovskite component comprises:

[0026] Controlling the light source to generate light of a preset wavelength band;

[0027] The data processing system is used to obtain the state of the perovskite component.

[0028] Optionally, the optical detection device for the perovskite component further includes: a conveying system and a transposition system, wherein the conveying system is arranged between the first optical system and the second optical system, and the conveying system is used to convey the perovskite component; the transposition system is arranged on a side of the conveying system away from the first optical system; the transposition system is used to rotate the perovskite component by a preset angle;

[0029] Before using the data processing system to obtain the state of the perovskite component, the method further includes:

[0030] Controlling the perovskite component to be transported on the transport system in a first posture, and using the data processing system to obtain a state of the perovskite component in the first posture;

[0031] After controlling the perovskite component to rotate by the preset angle to a second posture, controlling the perovskite component to be transported on the transport system, and using the data processing system to obtain a state of the perovskite component in the second posture;

[0032] The obtaining the state of the perovskite component by using the data processing system comprises:

[0033] The state of the perovskite component is determined according to the state of the perovskite component in the first posture and the state of the perovskite component in the second posture.

[0034] Optionally, the optical detection method of the perovskite component further includes:

[0035] In the absorption spectrum measurement mode, the light source is controlled to generate white light.

[0036] Optionally, the optical detection method of the perovskite component further includes:

[0037] In the photoluminescence measurement mode, controlling the light source to be in a single wavelength mode;

[0038] Before using the data processing system to obtain the state of the perovskite component, the method further includes:

[0039] A filter is built into the second optical system.

[0040] The technical solution of the embodiment of the present invention adopts an optical detection device for a perovskite component, which includes a light source, a first optical system, a second optical system, and a data processing system. The light source is used to generate light of a preset wavelength band; the first optical system is used to adjust the emitted light of the light source to a collimated line light source and irradiate the perovskite component; the second optical system is arranged on the side of the first optical system away from the first optical system, and the light incident surface of the second optical system is opposite to the light exit surface of the first optical system, and the second optical system is used to converge and collect light; the data processing system is connected to the second optical system, and is used to determine the state of the perovskite component according to the light collected by the second optical system. By setting the first optical system and the second optical system, it is possible to achieve a more efficient collection of light transmitted through the perovskite component and the fluorescence emitted by the perovskite component, and it is possible to reduce scattered light during absorption spectrum measurement, so that the location of defects or impurities can be determined more accurately.

[0041] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 A schematic diagram of the structure of an optical detection device of a perovskite component and a perovskite component provided in an embodiment of the present invention;

[0044] Figure 2 A schematic diagram of the structure of another optical detection device of a perovskite component and a perovskite component provided in an embodiment of the present invention;

[0045] Figure 3 A schematic diagram of the structure of another optical detection device of a perovskite component and a perovskite component provided in an embodiment of the present invention;

[0046] Figure 4 A schematic diagram of the structure of another optical detection device of a perovskite component and a perovskite component provided in an embodiment of the present invention;

[0047] Figure 5 A schematic diagram of the structure of an optical detection device of a perovskite component and a perovskite component provided in an embodiment of the present invention;

[0048] Figure 6 A flow chart of an optical detection method for a perovskite component provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0051] Figure 1 A schematic diagram of the structure of an optical detection device of a perovskite component and a perovskite component provided in an embodiment of the present invention, referring to Figure 1 . The optical detection device of the perovskite component includes: a light source 1, a first optical system 3, a second optical system 6 and a data processing system 8. The light source 1 is used to generate light of a preset band; the first optical system 3 is used to adjust the output light of the light source 1 to a collimated line light source and irradiate the perovskite component 4; the second optical system 6 is arranged on the light output side of the first optical system 3, and the light incident surface of the second optical system 6 is opposite to the light output surface of the first optical system 3, and the second optical system 6 is used to converge and collect light; the data processing system 8 is connected to the second optical system 6, and is used to determine the state of the perovskite component according to the light collected by the second optical system 6.

[0052] Specifically, the optical detection device of the perovskite component is used to detect the state of the perovskite component, wherein the state of the perovskite component is, for example, the uniformity of the morphology of the perovskite component, the distribution of components and defect states, etc. The perovskite component is, for example, a perovskite film, such as a thin film structure composed of a conductive glass substrate, a hole transport layer and a perovskite active layer, or a thin film structure composed of a conductive glass substrate, a hole transport layer, a perovskite active layer and an electron transport layer, or a thin film structure composed of a conductive glass substrate, an electron transport layer and a perovskite active layer, or a complete perovskite photovoltaic device, etc.

[0053] The light source 1 is a point light source, which can generate white light or single-wavelength light. When the light source 1 generates white light, the absorption spectrum can be measured; when the light source 1 generates single-wavelength light, the photoluminescence can be measured. When the perovskite component 4 is detected, the perovskite component 4 is arranged between the light exit surface of the first optical system 3 and the light entrance surface of the second optical system 6. In the absorption spectrum measurement mode, the light emitted by the first optical system 3 is irradiated on the perovskite component 4, and the second optical system 6 collects the light passing through the perovskite component 4. In the photoluminescence measurement mode, the light emitted by the first optical system 3 is irradiated on the perovskite component 4, and the second optical system 6 collects the fluorescence generated by the perovskite component 4. The light generated by the light source 1 is adjusted to a line light source by the first optical system 3. When the perovskite component 4 is moved, the scanning of the perovskite component 4 is realized. The light emitted by the first optical system 3 is irradiated on the perovskite component 4, and the light penetrating the perovskite component 4 is converged and collected by the second optical system 6, or the fluorescence emitted by the perovskite component 4. Finally, the state of the position on the perovskite component 4 irradiated by the line light source can be determined by performing spectral analysis on the light emitted by the second optical system 6 using the data processing system. In this embodiment, by setting the first optical system 3 and the second optical system 6, the first optical system 3 can adjust the light generated by the light source 1 to a line light source, thereby reducing the scattering of the light generated by the light source 1, thereby reducing the proportion of light scattered by the light source 1 in the light collected by the second optical system 6, thereby improving the detection efficiency. In addition, the second optical system 6 can collect more light passing through the perovskite component 4 in the absorption spectrum measurement mode, and collect more fluorescence generated by the perovskite component 4 in the photoluminescence measurement mode, thereby further improving the detection efficiency of the perovskite component and more accurately determining the location where defects or impurities exist.

[0054] The technical solution of the embodiment of the present invention adopts an optical detection device for a perovskite component, which includes a light source, a first optical system, a second optical system, and a data processing system. The light source is used to generate light of a preset wavelength band; the first optical system is used to adjust the emitted light of the light source to a collimated line light source and irradiate the perovskite component; the second optical system is arranged on the side of the first optical system away from the first optical system, and the light incident surface of the second optical system is opposite to the light exit surface of the first optical system, and the second optical system is used to converge and collect light; the data processing system is connected to the second optical system, and is used to determine the state of the perovskite component according to the light collected by the second optical system. By setting the first optical system and the second optical system, it is possible to achieve a more efficient collection of light transmitted through the perovskite component and the fluorescence emitted by the perovskite component, and it is possible to reduce scattered light during absorption spectrum measurement, so that the location of defects or impurities can be determined more accurately.

[0055] Optionally, Figure 2 A schematic diagram of the structure of another optical detection device of a perovskite component and a perovskite component provided in an embodiment of the present invention, refer to Figure 2 The optical detection device for the perovskite component further includes a conveying system 5 and a transposition system 9. The conveying system 5 is arranged between the first optical system 3 and the second optical system 6, and is used to convey the perovskite component 4. The transposition system 9 is arranged on a side of the conveying system 5 away from the first optical system 3; the transposition system 9 is used to rotate the perovskite component 4 by a preset angle.

[0056] Specifically, Figure 2 As shown, the conveying system 5 can convey the perovskite component 4 in the first direction X. The first optical system 3 and the conveying system 5 are arranged in the third direction Y; the spot length direction of the outgoing light of the first optical system 3 is the second direction Y. The first direction X, the second direction Y and the third direction Z can be perpendicular to each other. The transposition system 9 can adjust the posture of the perovskite component 4 on the conveying system 5, such as rotating the first posture by a preset angle to change it into a second posture. In the initial state, the perovskite component 4 can be placed on the conveying system 5 in the first posture. When the perovskite component 4 is conveyed on the conveying system 5, continuous scanning of the perovskite component 4 can be achieved, thereby obtaining the state of the perovskite component 4 scanned in the first posture. After the adjustment is completed, the perovskite component 4 in the second posture is scanned again, thereby obtaining the state of the perovskite component 4 scanned in the second posture. The data processing system 8 combines the state of the perovskite component 4 in the first posture and the state in the second posture to obtain a more accurate state of the perovskite component 4, that is, to obtain a more accurate defect position, sample uniformity and composition of the perovskite component. In other words, the optical detection device of this embodiment implements a spectral measurement technology with spatial resolution, which can more accurately determine the state of the perovskite component.

[0057] The technical solution of this embodiment adopts an optical detection device for perovskite components, including a light source, a first optical system, a transmission system, a transposition system, a second optical system and a data processing system. The light source is used to emit light of a preset wavelength band; the first optical system is used to adjust the emitted light of the light source to a collimated line light source; the transmission system is arranged on the light-emitting side of the first optical system, and the transmission system is used to transmit the perovskite component; the transposition system is arranged on the side of the transmission system away from the first optical system, and the transposition system is used to rotate the perovskite component by a preset angle; the second optical system is arranged on the side of the transmission system away from the first optical system, and the light-incoming surface of the second optical system is opposite to the light-emitting surface of the first optical system, and the second optical system is used to converge and collect light; the data processing system is connected to the second optical system, and is used to determine the state of the perovskite component according to the light collected by the second optical system. By setting the transposition system, it is possible to scan the perovskite component in a variety of different postures, thereby obtaining the corresponding analysis data of the perovskite component in a variety of different postures, and the data processing system can analyze the more accurate state of the perovskite component based on this. That is, it is more accurate to determine the location where defects or impurities exist.

[0058] Optionally, the preset angle can be 90 degrees. That is to say, the second posture is the posture after the first posture is rotated 90 degrees. After the perovskite component 4 is scanned in the first posture, the perovskite component 4 is rotated 90 degrees, and then the perovskite component is scanned again to obtain the data corresponding to the perovskite component 4 in the second posture. By analyzing the corresponding data under two orthogonal postures, a more accurate state of the perovskite component can be obtained. It is understandable that when the transposition system 9 rotates the perovskite component 4, the plane where the perovskite component is located is perpendicular to the third direction Z. In some other embodiments, the preset angle can also be other values ​​different from N*360 degrees, where N is a positive integer.

[0059] Optionally, the optical detection device has two measurement modes: absorption spectrum measurement mode and photoluminescence measurement mode. In the absorption spectrum measurement mode, the light source 1 emits continuous white light with a wavelength of 360 nm-1000 nm. In the photoluminescence measurement mode, the light source emits single-wavelength light, such as light with a wavelength of 375 nm, 405 nm, 450 nm, 475 nm, 515 nm, 532 nm, 650 nm or 680 nm.

[0060] Optionally, continue to refer to Figure 1 and Figure 2The first optical system 3 includes a fiber collimator 31, a first cylindrical lens 32, and a second cylindrical lens 35; the fiber collimator 31 is connected to the light source 1 through an optical fiber, and the fiber collimator 31 is used to adjust the light generated by the light source 1 to a collimated point light source; the first cylindrical lens 32 is located between the fiber collimator 31 and the second optical system 6; the second cylindrical lens 35 is located between the first cylindrical lens 32 and the second optical system 6; one of the first cylindrical lens 32 and the second cylindrical lens 35 is a first plano-convex cylindrical lens, and the other is a first plano-concave cylindrical lens.

[0061] Specifically, the light generated by the light source 1 is adjusted to a collimated point light source after passing through the fiber collimator 31. The collimated point light source is adjusted to a collimated line light source after passing through the first cylindrical lens 32 and the second cylindrical lens 35. More specifically, for example, the first cylindrical lens 32 is a first plano-concave cylindrical lens, and the second cylindrical lens 35 is a first plano-convex cylindrical lens. By configuring the first cylindrical lens 32 and the second cylindrical lens 35, the collimated point light source emitted by the fiber collimator 31 is adjusted to a divergent line light source after passing through the first cylindrical lens 32, and the divergent line light source is adjusted to a collimated line light source after passing through the second cylindrical lens 35. Alternatively, when the first cylindrical lens 32 is a first plano-convex cylindrical lens, and the second cylindrical lens 35 is a first plano-concave cylindrical lens, the light emitted by the fiber collimator 31 becomes a collimated line light source after passing through the first cylindrical lens 32 and the second cylindrical lens 35. In the above embodiment, by configuring the optical fiber collimator, the first cylindrical lens, and the second cylindrical lens, when the line light source emitted by the first optical system 3 irradiates the perovskite component 4 located on the transmission system 5, the length of the light spot irradiated on the perovskite component 4 is greater than or equal to 0.02m and less than or equal to 0.5m, and the width is about 0.003m. It can be understood that the length of the light spot is the size of the light spot along the second direction Y, and the width of the light spot is the size of the light spot along the first direction X.

[0062] In this embodiment, the first optical system 3 adjusts the light source to a collimated line light source to illuminate the perovskite component, which greatly reduces light scattering, thereby improving the resolution of the spectrum. In addition, the use of a fiber collimator and a cylindrical lens to realize the function of the first optical system 3 has the advantages of simple structure and low cost.

[0063] Optionally, the first cylindrical lens 32 may be an achromatic cylindrical lens, and the second cylindrical lens 35 may be an achromatic cylindrical lens.

[0064] Optionally, the transmission speed of the transmission system 5 is greater than or equal to 0.01 m / s and less than or equal to 0.1 m / s. The period of data acquisition by the data processing system 8 is greater than or equal to 0.01 s and less than or equal to 1 s. Thus, the spatial resolution of the absorption spectrum or the spectrum corresponding to the photoluminescence spectrum can be configured by adjusting the period of data acquisition by the data processing system 8 and the transmission speed of the transmission system 5. And the highest spectral spatial resolution of sub-millimeter level can be achieved in a single direction.

[0065] Optionally, continue to refer to Figure 1 The first optical system 3 also includes an aperture 33, which is disposed between the first cylindrical lens 32 and the second cylindrical lens 35. The aperture 33 is used to control the length of the light spot corresponding to the light beam between the first cylindrical lens 32 and the second cylindrical lens 35.

[0066] Specifically, the length of the spot of the light emitted from the first cylindrical lens 32 incident on the second cylindrical lens 35 can be adjusted by the aperture 33, and the length of the spot of the light emitted from the second cylindrical lens 35 can be adjusted. Before scanning the perovskite component 4, the aperture 33 is adjusted so that the length of the light emitted from the second cylindrical lens 35 incident on the perovskite component 4 is greater than the size of the perovskite component 4 in the second direction Y.

[0067] Optionally, continue to refer to Figure 1 The first optical system 3 further includes a first housing 34, which is a closed housing. The first cylindrical lens 32, the aperture 33 and the second cylindrical lens 35 are located in the first housing. The light output end of the optical fiber collimator 31 is also located in the first housing.

[0068] Optionally, continue to refer to Figure 1 The transposition system 9 includes a telescopic mechanism 91, a rotating mechanism 93 and a carrying platform 92. The carrying platform 92 is used to carry the perovskite component 4. The telescopic mechanism 91 is fixedly connected to the carrying platform 92, and the telescopic mechanism 91 is used to control the rise and fall of the carrying platform 92; the rotating mechanism 93 is fixed to the end of the telescopic mechanism 91 away from the conveying system 5, and the rotating mechanism 93 is used to rotate the carrying platform 92 to a preset angle.

[0069] Specifically, Figure 1As shown, the conveying system 5 may include a plurality of parallel conveying rollers, and the plurality of conveying rollers are arranged along the first direction X to convey the perovskite component in the first direction X. The transposition system 9 is located in the gap between the conveying rollers. Further, the orthographic projection of the transposition system 9 on the conveying system 5 is misaligned with the orthographic projection of the first optical system 3 on the conveying system 5. When the telescopic mechanism 91 is in a retracted state, the carrying platform is located on the side of the conveying roller away from the first optical system 3. When the telescopic mechanism 91 is in an extended state, the carrying platform is located on the side of the conveying roller close to the first optical system 3. In the initial state, the telescopic mechanism 91 is in a retracted state. After the perovskite component 4 is scanned in the first posture, the perovskite component 4 is conveyed above the carrying platform. Then the telescopic mechanism 91 rises, so that the perovskite component 4 is separated from the conveying system 5, and then the rotating mechanism 93 is rotated by a preset angle, so that the carrying platform 92 and the perovskite component 4 are rotated by a preset angle, and finally the telescopic mechanism 91 is lowered and retracted, and the perovskite component 4 is finally placed on the conveying system 5 in the second posture.

[0070] Optionally, continue to refer to Figure 1 The optical detection device also includes a first position sensor 10, which is arranged on a side of the conveying system 5 close to the transposition system 9, and is used to detect the position and angle of the perovskite component 4 and the transposition system 9.

[0071] Specifically, the first position sensor 10 can be arranged with the transposition system 9 along the second direction Y, and the first position sensor 10 can be set at the edge of the conveying system 5. The first position sensor 10 detects the position of the perovskite component 4, and when the perovskite component 4 is located at a preset position, the transposition system is controlled to transpose the perovskite component 4. And when rotating, the first position sensor 10 detects the rotation angle of the perovskite component 4, and when the perovskite component 4 rotates the preset angle, the rotating mechanism 93 is controlled to stop rotating. Among them, the preset position is, for example, that the center of the perovskite component coincides with the center of the carrying platform 92.

[0072] Optionally, continue to refer to Figure 1 and Figure 2 The second optical system 6 includes a second plano-convex cylindrical lens 61, a second plano-concave cylindrical lens 63 and a light collector 65; the second plano-convex cylindrical lens 61 is arranged between the second plano-concave cylindrical lens 63 and the first transmission system 3; the light collector 65 is arranged on the side of the second plano-concave cylindrical lens 63 away from the first optical system 3; the data processing system 8 is connected to the light collector 65.

[0073] Specifically, when the perovskite component 4 is detected, the light passing through the perovskite component 4 and the light emitted by the perovskite component 4 will be converged by the second plano-convex cylindrical lens 61, and then further converged by the second plano-concave cylindrical lens 63 to the light collector 65, and the light collector 65 collects the light. The collected light is then processed by the data processing system 8 to obtain the corresponding analysis results. In this embodiment, the light collection efficiency can be further improved by the second plano-convex cylindrical lens 61 and the second plano-concave cylindrical lens 63, thereby further improving the accuracy of the detection.

[0074] Alternatively, if Figure 1 As shown, the second optical system 6 further includes a second housing 62. A second plano-convex cylindrical lens 61 and a second plano-concave cylindrical lens 63 are disposed in the second housing 62, and the second housing 62 exposes a light outlet of the light collector 65.

[0075] Optionally, the light source 1 is connected to the optical fiber collimator 31 via the first optical fiber 2. The light collector 65 is connected to the data processing system 8 via the second optical fiber 7.

[0076] Optionally, the data processing system 8 includes a fiber optic spectrometer 81 and a processor 82. The fiber optic spectrometer 81 is connected to the light collector 65 and is used to perform spectral analysis on the light collected by the light collector 65. The processor 82 is electrically connected to the fiber optic spectrometer 81 and is used to determine the state of the perovskite component based on the spectral data output by the fiber optic spectrometer 81. The processor 82 can be, for example, a computer.

[0077] Optionally, continue to refer to Figure 1 The optical detection device further includes a second position sensor 11, which is disposed on the conveying system 5. The second position sensor 11 can be arranged with the second optical system 6 in the second direction Y. The second position sensor 11 is used to detect the position of the perovskite component 4 on the conveying system 5, so that the detected spectrum corresponds to the corresponding part of the perovskite component 4.

[0078] In summary, when the optical detection device of the perovskite component is configured in the absorption spectrum measurement mode, the measurement process is as follows: place the perovskite component on the conveying system 5 in a first posture and configure the transmission speed of the conveying system 5 and the sampling period of the data processing system 8. Configure the light source 1 to be in a mode of emitting continuous white light. As the conveying system 5 moves the perovskite component 4, the light emitted by the first optical system 3 is irradiated on the perovskite component 4, and the second position sensor 11 detects the position of the perovskite component 4 on the conveying system 5. The second optical system 6 collects the light that penetrates the perovskite component 4, and the data processing system can determine the spectrum of the corresponding position of the perovskite component based on the output of the second position sensor 11 and the output of the second optical system 6. The perovskite component 4 moves with the conveying system 5, and the data processing system 8 can obtain the spectral analysis data of the perovskite component 4 along the first direction X in the first posture. Subsequently, as Figure 3 As shown, Figure 3 A schematic diagram of the structure of another optical detection device of a perovskite component and a perovskite component provided in an embodiment of the present invention, wherein the perovskite component 4 is transferred to the carrier platform 92, and the transposition system 9 rotates the perovskite component 4 by a preset angle, so that the perovskite component 4 presents a second posture on the conveying system 5. The perovskite component 4 is then continuously scanned in the second posture, and the spectrum analysis data of the perovskite component 4 along the first direction X in the second posture can be obtained. The data processing system 8 can further obtain the absorption spectrum data of the perovskite component 4 according to the spectrum analysis data corresponding to the first posture and the spectrum analysis data corresponding to the second posture.

[0079] Furthermore, to improve the accuracy of the detection, the control component can be analyzed in the same way, and the control component is, for example, a conductive glass substrate. By comparing the absorption spectrum data of the perovskite component 4 with the absorption spectrum data of the control component, more accurate absorption spectrum data of the perovskite component 4 can be obtained.

[0080] Optionally, Figure 4 A schematic diagram of another optical detection device for a perovskite component and a structure of a perovskite component provided in an embodiment of the present invention. Different from the above-mentioned embodiment, the optical detection device of this embodiment further includes a filter 64 , which is disposed between the second plano-concave cylindrical lens 63 and the light collector 65 .

[0081] Specifically, the optical detection device of the perovskite component of the present embodiment can be configured in a photoluminescence measurement mode. Different from the absorption spectrum measurement mode, in the photoluminescence measurement mode, the light source 1 is adjusted to a single wavelength mode. And a filter 64 needs to be provided to filter out the outgoing light of the light source 1 and retain the fluorescence emitted by the perovskite component 4 due to excitation. Furthermore, in the absorption spectrum measurement mode, the light passing through the perovskite component 4 is still a line light source, and at this time the second plano-convex cylindrical lens 61 can be in the first position. In the photoluminescence measurement mode, the fluorescence emitted by the perovskite component 4 due to excitation is a divergent light source, so the position of the second plano-convex cylindrical lens 61 can be adjusted to the second position, so that the second plano-convex cylindrical lens 61 can collect more fluorescence emitted by the perovskite component 4. The second position is different from the first position. After the above parameters are configured, the photoluminescence measurement can be performed, and the specific measurement process is the same as the absorption spectrum measurement. As Figure 4 As shown, first, the perovskite component is placed on the conveying system 5 in a first posture and the transmission speed of the conveying system 5 and the sampling period of the data processing system 8 are configured. As the conveying system 5 moves the perovskite component 4, the light emitted by the first optical system 3 is irradiated on the perovskite component 4, and the second position sensor 11 detects the position of the perovskite component 4 on the conveying system 5. The second optical system 6 collects the fluorescence emitted by the perovskite component 4, and the data processing system can determine the spectrum of the corresponding position of the perovskite component according to the output of the second position sensor 11 and the output of the second optical system 6. The perovskite component 4 moves with the conveying system 5, and the data processing system 8 can obtain the spectral analysis data of the perovskite component 4 along the first direction X in the first posture. Then, as shown Figure 5 As shown, Figure 5 A schematic diagram of the structure of another optical detection device of a perovskite component and a perovskite component provided in an embodiment of the present invention, wherein the perovskite component 4 is transferred to a carrying platform 92, and the transposition system 9 rotates the perovskite component 4 by a preset angle, so that the perovskite component 4 presents a second posture on the conveying system 5. The perovskite component 4 is then continuously scanned in the second posture, and the spectrum analysis data of the perovskite component 4 along the first direction X in the second posture can be obtained. The data processing system 8 can further obtain the photoluminescence spectrum data of the perovskite component 4 according to the spectrum analysis data corresponding to the first posture and the spectrum analysis data corresponding to the second posture.

[0082] Of course, it should be noted that in the photoluminescence measurement mode, a reference component can also be used to perform reference analysis to improve the accuracy of the measurement.

[0083] Furthermore, after obtaining the absorption spectrum data and the photoluminescence spectrum data, the data processing system can comprehensively analyze and compare the two data to obtain a more accurate state of the perovskite component 4, thereby increasing the reliability of the measurement results of the uniformity, composition and defect state distribution of the perovskite component.

[0084] The present invention also provides a method for optically detecting a perovskite component, which is performed by an optical detection device for a perovskite component provided by any embodiment of the present invention. Figure 6 As shown, Figure 6 A flowchart of an optical detection method for a perovskite component provided in an embodiment of the present invention. The optical detection method for a perovskite component includes:

[0085] Step S110, controlling the light source to generate light of a preset wavelength band;

[0086] Step S120, using a data processing system to obtain the state of the perovskite component.

[0087] Specifically, in the optical detection method of this embodiment, a first optical system and a second optical system are provided in the optical detection device of the perovskite component, which can realize more efficient collection of light transmitted through the perovskite component and fluorescence emitted by the perovskite component, and can reduce scattered light during absorption spectrum measurement. Therefore, the location of defects or impurities can be determined more accurately.

[0088] Optionally, the optical detection device for the perovskite component further includes: a transmission system and a transposition system, wherein the transmission system is arranged between the first optical system and the second optical system, and the transmission system is used to transmit the perovskite component; the transposition system is arranged on a side of the transmission system away from the first optical system; the transposition system is used to rotate the perovskite component by a preset angle;

[0089] Before using the data processing system to obtain the status of the perovskite component, it also includes:

[0090] Controlling the perovskite component to be transported on the transport system in a first posture, and using the data processing system to obtain a state of the perovskite component in the first posture;

[0091] like Figures 1 to 5 As shown, the perovskite component is first placed on the conveying system in a first posture, and then the perovskite component is scanned and analyzed to obtain spectral data in the first posture.

[0092] After controlling the perovskite component to rotate to a preset angle to a second posture, controlling the perovskite component to be transported on a transport system, and using a data processing system to obtain a state of the perovskite component in the second posture;

[0093] Specifically, the perovskite component is rotated to the second posture by a preset angle using the transposition system. The preset angle is, for example, 90 degrees.

[0094] Acquiring the state of the perovskite component by using the data processing system includes: determining the state of the perovskite component according to the state of the perovskite component in the first posture and the state of the perovskite component in the second posture.

[0095] In this embodiment, by setting up a transposition system, it is possible to scan the perovskite component in various different postures, thereby obtaining corresponding analysis data of the perovskite component in various different postures. Based on this, the data processing system can analyze the state of the perovskite component more accurately.

[0096] Optionally, the optical detection method of the perovskite component further includes: in the absorption spectrum measurement mode, controlling the light source to generate white light. The specific working process of the absorption spectrum measurement mode can refer to the description of the optical detection device in the present invention, which will not be repeated here.

[0097] Optionally, the optical detection method of the perovskite component further includes:

[0098] In the photoluminescence measurement mode, the light source is controlled to be in single wavelength mode;

[0099] Before using the data processing system to obtain the state of the perovskite component, the method further includes: setting a filter in the second optical system. The filter can filter out the light emitted by the light source and only retain the fluorescence of the perovskite component. The filter can be a long-wave pass filter and can be set between the second plano-concave cylindrical lens and the light collector. The specific working process of the photoluminescence measurement mode can refer to the description of the optical detection device in the present invention, which will not be repeated here.

[0100] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0101] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical detection device for a perovskite component, It is characterized in that include: A light source, the light source is used to generate light of a preset wavelength band; A first optical system, the first optical system is used to adjust the output light of the light source into a collimated line light source and irradiate the collimated line light source onto the perovskite component; a second optical system, the second optical system being arranged on the light exiting side of the first optical system, and the light incident surface of the second optical system being opposite to the light exiting surface of the first optical system, and the second optical system being used for converging and collecting light; A data processing system is connected to the second optical system and is used to determine the state of the perovskite component based on the light collected by the second optical system.

2. The optical detection device of the perovskite component according to claim 1, It is characterized in that The optical detection device of the perovskite component also includes: A conveying system, the conveying system is disposed between the first optical system and the second optical system, and the conveying system is used to convey the perovskite component; A transposition system, wherein the transposition system is arranged on a side of the transmission system away from the first optical system; the transposition system is used to rotate the perovskite component by a preset angle.

3. The optical detection device of the perovskite component according to claim 1, It is characterized in that The first optical system includes a fiber collimator, a first cylindrical lens and a second cylindrical lens; the fiber collimator is connected to the light source via an optical fiber; The first cylindrical lens is located between the fiber collimator and the second optical system, and the second cylindrical lens is located between the first cylindrical lens and the second optical system; One of the first cylindrical lens and the second cylindrical lens is a first plano-convex cylindrical lens, and the other is a first plano-concave cylindrical lens.

4. The optical detection device of the perovskite component according to claim 3, It is characterized in that The first optical system further includes an aperture, which is disposed between the first cylindrical lens and the second cylindrical lens and is used to control the length of a light spot corresponding to the light beam between the first cylindrical lens and the second cylindrical lens.

5. The optical detection device of the perovskite component according to claim 2, It is characterized in that The transposition system includes a telescopic mechanism, a rotating mechanism and a bearing platform; The carrying platform is used to carry the perovskite component; the telescopic mechanism is fixedly connected to the carrying platform, and the telescopic mechanism is used to control the rise and fall of the carrying platform; the rotating mechanism is fixed to one end of the telescopic mechanism away from the conveying system, and the rotating mechanism is used to rotate the carrying platform to the preset angle.

6. The optical detection device of the perovskite component according to claim 5, It is characterized in that The optical detection device also includes a first position sensor, which is arranged on a side of the conveying system close to the transposition system, and is used to detect the position and angle of the perovskite component and the transposition system.

7. The optical detection device of the perovskite component according to claim 1, It is characterized in that The second optical system includes a second plano-convex cylindrical lens, a second plano-concave cylindrical lens and a light collector; The second plano-convex cylindrical lens is arranged between the second plano-concave cylindrical lens and the first optical system; The light collector is arranged on a side of the second plano-concave cylindrical lens away from the first optical system; The data processing system is connected to the light collector.

8. The optical detection device of the perovskite component according to claim 7, It is characterized in that The optical detection device of the perovskite component further includes a filter, which is arranged between the second plano-concave cylindrical lens and the light collector.

9. A method for optically detecting a perovskite component, performed by the optical detection device for a perovskite component according to any one of claims 1 to 8, It is characterized in that The optical detection method of the perovskite component comprises: Controlling the light source to generate light of a preset wavelength band; The data processing system is used to obtain the state of the perovskite component.

10. The optical detection method of the perovskite component according to claim 9, It is characterized in that The optical detection device of the perovskite component further includes: a conveying system and a transposition system, wherein the conveying system is arranged between the first optical system and the second optical system, and the conveying system is used to convey the perovskite component; the transposition system is arranged on a side of the conveying system away from the first optical system; the transposition system is used to rotate the perovskite component by a preset angle; Before using the data processing system to obtain the state of the perovskite component, the method further includes: Controlling the perovskite component to be transported on the transport system in a first posture, and using the data processing system to obtain a state of the perovskite component in the first posture; After controlling the perovskite component to rotate by the preset angle to a second posture, controlling the perovskite component to be transported on the transport system, and using the data processing system to obtain a state of the perovskite component in the second posture; The obtaining the state of the perovskite component by using the data processing system comprises: The state of the perovskite component is determined according to the state of the perovskite component in the first posture and the state of the perovskite component in the second posture.

11. The optical detection method of the perovskite component according to claim 9, It is characterized in that The optical detection method of the perovskite component also includes: In the absorption spectrum measurement mode, the light source is controlled to generate white light.

12. The optical detection method of the perovskite component according to claim 9, It is characterized in that The optical detection method of the perovskite component also includes: In the photoluminescence measurement mode, controlling the light source to be in a single wavelength mode; Before using the data processing system to obtain the state of the perovskite component, the method further includes: A filter is built into the second optical system.

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