Detection device and light conversion characteristic detection system
By designing a detection device that separates ultraviolet and visible light using an optical sphere and detector, the problem of inaccurate evaluation of the light conversion properties of light-converting materials in existing technologies has been solved, enabling accurate evaluation and batch stability monitoring of light-converting materials.
Patent Information
- Application Number
- CN202520049008.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing UV spectrophotometers cannot simultaneously and effectively detect the UV and visible light transmittance of light transfer materials, resulting in inaccurate evaluation of the light transfer properties of light transfer films.
A detection device was designed, including a light sphere and a detector. The light sphere is used to collect and project the light to be measured, and the detector is used to separate the light into ultraviolet light and visible light. The device performs full-spectrum transient detection through a multi-channel detection unit, thereby realizing the synchronous collection and detection of light flux.
It enables accurate determination of the ultraviolet and visible light transmittance of light-converting materials, simultaneously acquires the excitation and emission characteristic curves of light-converting materials, monitors batch stability, and solves the problem of accuracy in evaluating the light conversion characteristics of light-converting materials.
Smart Images
Figure CN223977113U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of photovoltaic technology, and in particular to detection devices and light conversion characteristic detection systems. Background Technology
[0002] With the increasing severity of environmental pollution and energy shortages, global demand for renewable energy is rising year by year, and the photovoltaic market is increasingly demanding high-efficiency and reliable solar cells. Among them, heterojunction (HJT) cells have become a research hotspot in this field due to their high conversion efficiency, low temperature coefficient, high performance in weak light response, and potential low-cost manufacturing processes.
[0003] However, compared to other types of cells such as emitter-and-back passivated (PERC) cells and tunnel oxide passivated contact (TOPCon) cells, HJT cells use amorphous or microcrystalline silicon. The surface of these cells is more susceptible to damage from ultraviolet radiation due to the Si-H groups, resulting in defects that cause greater power degradation and higher requirements for UV resistance. Therefore, there is an urgent need to develop novel encapsulation materials, including films and glass, to achieve UV resistance.
[0004] To address the UV degradation issue in HJT batteries, the industry currently employs the introduction of light-transfer glass or light-transfer films to simultaneously resist UV aging and improve module power, achieving a dual benefit. However, for evaluating the light transfer characteristics of light-transfer films, current UV spectrophotometers rely on mechanical rotation of the sample at a single wavelength, failing to separate and identify the fluorescence transferred through the film, leading to inaccurate test data. Furthermore, while UV spectrophotometers with added filters can accurately assess UV transmittance, they cannot evaluate the transmittance of the transferred visible light. These results indicate that current UV spectrophotometers or added filters cannot simultaneously and effectively detect the excitation and emission wavelength characteristics of the transferred light, thus failing to solve the problem of simultaneously evaluating the excitation and emission characteristics of light-transfer materials. Utility Model Content
[0005] Therefore, it is necessary to provide a detection device and a light conversion characteristic detection system to address the aforementioned technical problems.
[0006] This application provides a detection device for obtaining the light conversion properties of light-converting materials, the detection device comprising:
[0007] An optical sphere has a receiving side and a projection side, the receiving side and the projection side of the optical sphere facing different directions. The receiving side of the optical sphere is used to face the sample to be tested, the optical sphere is used to collect the test light transmitted through the sample to be tested, and the projection side of the optical sphere is used to project the collected test light outward.
[0008] A detector located on the projection side of the optical sphere, the detector being used at least to separate the light to be tested projected by the optical sphere into ultraviolet light and visible light.
[0009] In one embodiment, the detector is also used to perform full-spectrum transient detection of ultraviolet and visible light separated from the light to be measured.
[0010] In one embodiment, the detector includes:
[0011] A multi-channel detection unit is used to perform full-spectrum transient detection of ultraviolet light and visible light separated from the light to be measured.
[0012] In one embodiment, the detector includes:
[0013] A grating is used to separate the light to be tested projected by the optic sphere into ultraviolet light and visible light, and to project the separated ultraviolet light and visible light onto the multi-channel detection unit.
[0014] In one embodiment, the detector includes:
[0015] A slit plate having a slit, wherein the light to be measured projected by the light sphere is used to project onto the grating through the slit of the slit plate.
[0016] In one embodiment, the detection device includes:
[0017] A sample stage is located on the receiving side of the optical sphere. The sample stage has a placement area for placing the sample to be tested. At least a portion of the placement area is a light-transmitting structure, and a light source is used to generate the test light through the sample to be tested and the light-transmitting structure.
[0018] In one embodiment, the light-transmitting structure is configured as a light-transmitting hole or a light-transmitting material.
[0019] In one embodiment, the detection device includes:
[0020] A light-emitting device is located on the receiving side of the light-emitting sphere, used to receive a light source and focus the light source into parallel light, which is then projected onto the sample to be tested.
[0021] In one embodiment, the sample to be tested is a phototransfer material.
[0022] This application provides a light conversion characteristic detection system, which includes the detection device.
[0023] In the aforementioned detection device and light conversion characteristic detection system, after obtaining the separated ultraviolet and visible light based on all the light transmitted through the sample under test (such as a photoconversion material), the ultraviolet and visible light can be transiently collected and their luminous flux detected. At this time, the luminous flux transmitted in the ultraviolet band is I minus the flux after absorbing ultraviolet light. uv The light flux transmitted through the visible band is the sum of the visible light emitted by the ultraviolet-excited light-converting material and its own visible light flux I. vis +I uv Based on this, the transmittance in the ultraviolet band is I. uv / I0 (I0 is the luminous flux transmitted through air at the corresponding ultraviolet wavelength), the transmittance in the visible band is (I vis +I uv ) / I0 (I0 is the light flux transmitted through air at the corresponding visible wavelength). At this time, the excitation and emission characteristic curve of the light conversion material can be acquired simultaneously, and the light flux data of the excitation and emission light of the light conversion material can be collected simultaneously. This enables accurate judgment of whether the light conversion characteristics of the light conversion material meet the requirements and monitoring of the stability of incoming batches. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of a detection device provided in one embodiment of this application.
[0025] Figure 2 This is a schematic diagram of the detection device provided in another embodiment of this application.
[0026] Figure 3 This is a schematic diagram of the detection device provided in another embodiment of this application.
[0027] Figure 4 This is data used to evaluate the characteristics of different devices using the same light-converting material, as provided in one embodiment of this application.
[0028] Icon labels:
[0029] 100. Sample to be tested;
[0030] 1000, Optical sphere; 2000, Detector; 3000, Sample stage; 4000, Projector; 5000, Display;
[0031] 1001, Receiving side; 1002, Projecting side;
[0032] 2100, Multi-channel detection unit; 2200, Grating; 2300, Slit plate;
[0033] 3001. Storage area. Detailed Implementation
[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0035] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0036] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0038] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0039] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0040] First, it should be noted that in existing conventional detection processes, conventional ultraviolet spectrophotometers place the sample 100 to be tested 2200 after the grating, thus failing to collect all the light passing through the sample 100 (such as a light-converting material). The detection device of this application, however, does not place the sample 100 after the grating 2200; its purpose is to collect all the light passing through the light-converting material. See [reference needed]. Figure 1 and Figure 2 As shown, this application provides a detection device for obtaining the light conversion properties of light-converting materials. The detection device includes a light sphere 1000 and a detector 2000.
[0041] In the design of the aforementioned detection device, the optical sphere 1000 is defined to have a receiving side 1001 and a projection side 1002. For example, the receiving side 1001 and the projection side 1002 of the optical sphere 1000 may face different directions; for instance, the receiving side 1001 and the projection side 1002 of the optical sphere 1000 may face completely opposite directions, or... Figure 1 As shown, the receiving side 1001 and the projection side 1002 of the optic sphere 1000 are oriented at approximately 90°. Those skilled in the art can set the orientation of the receiving side 1001 and the projection side 1002 of the optic sphere 1000 according to actual needs, which is not limited here.
[0042] Based on the orientation design of the receiving side 1001 and the projection side 1002 of the optical sphere 1000, the receiving side 1001 of the optical sphere 1000 can be positioned facing the sample 100 to be tested. In this case, the sample 100 to be tested is positioned in front of the optical sphere 1000. The function of the optical sphere 1000 is to collect the light to be tested that has passed through the sample 100, i.e., all the light that has passed through the sample 100 (such as a light-converting material). The projection side 1002 of the optical sphere 1000 is then used to project the collected light to be tested outwards. The detector 2000 is located on the projection side 1002 of the optical sphere 1000. The detector 2000 can be used to separate the light to be tested projected by the optical sphere 1000 into ultraviolet light and visible light.
[0043] In one embodiment, the detector 2000 may include a grating 2200, which separates the light to be measured projected by the luminous sphere 1000 into ultraviolet and visible light, and projects the separated ultraviolet and visible light onto a multi-channel detection unit 2100. The multi-channel detection unit 2100 collects and detects the full-spectrum transient light flux separated by the grating 2200, and simultaneously acquires the light-to-material excitation-emission characteristic curve. In addition, the detector 2000 may also include a slit 2300, which has a slit through which the light to be measured projected by the luminous sphere 1000 is projected onto the grating 2200.
[0044] Therefore, after obtaining the separated ultraviolet and visible light based on all the light transmitted through the sample 100 (such as a phototransfer material), the ultraviolet and visible light can be transiently collected and their luminous flux detected. At this time, the luminous flux transmitted in the ultraviolet band is I minus the flux after absorbing the ultraviolet light. uv The light flux transmitted through the visible band is the sum of the visible light emitted by the ultraviolet-excited light-converting material and its own visible light flux I. vis +I uv Based on this, the transmittance in the ultraviolet band is I. uv / I0 (I0 is the luminous flux transmitted through air at the corresponding ultraviolet wavelength), the transmittance in the visible band is (I vis +I uv ) / I0 (I0 is the luminous flux through the air at the corresponding visible wavelength).
[0045] In one embodiment, the detector 2000 can also be directly used to perform full-spectrum transient detection of ultraviolet and visible light separated from the light to be measured, thereby transiently collecting and detecting the luminous flux of ultraviolet and visible light. For example, the detector 2000 may include a multi-channel detection unit 2100, which is used to perform full-spectrum transient detection of ultraviolet and visible light separated from the light to be measured. Because conventional ultraviolet spectrophotometers are single-channel detection units, they can only achieve single-wavelength incident and single-wavelength detection, and cannot separate and identify the fluorescence transferred by the phototransfer film, resulting in inaccurate test data. When the multi-channel detection unit 2100 is introduced into the detector 2000, the multi-channel detection unit 2100 works in conjunction with the grating 2200 to achieve full-spectrum transient collection and detection of luminous flux separated by the grating 2200, and simultaneously acquire the excitation and emission characteristic curves of the phototransfer material. Among these, the simultaneous acquisition of luminous flux data of the excitation and emission light of the phototransfer material can accurately determine whether the light conversion characteristics of the phototransfer material meet the requirements and monitor the stability of incoming batches.
[0046] In one embodiment, the detection device includes a sample stage 3000 located on the receiving side 1001 of the optical sphere 1000. The sample stage 3000 has a placement area 3001 for placing a sample 100 to be tested. At least a portion of the placement area 3001 is a light-transmitting structure, through which a light source generates test light. The light-transmitting structure can be configured as a light-transmitting hole or can be made of a light-transmitting material. The sample stage 3000 and the placement area 3001 can be configured in shapes and sizes according to actual needs, such as circular or square, and are not limited herein. Furthermore, there are no special restrictions on the shape and size of the light-converting material.
[0047] After the sample 100 to be tested is placed in the placement area 3001 on the sample stage 3000, the transmittance of the air control group can be tested. Assuming that the transmittance of air is 100%, the transmitted light flux reaching the detector 2000 is equal to the incident light flux, and the incident light flux I0 of the light source can be obtained. Next, the transmittance of the light-converting material is tested. The light-converting material is laid flat on the sample stage 3000 for testing. The light transmitted through the light-converting material passes through the slit 2300 to the grating 2200 for light redistribution, separating the ultraviolet light excited by the light-converting material from the emitted visible light, and then reflecting to the multi-channel detection unit 2100 for transient collection and detection of the light flux.
[0048] In one embodiment, the detection device may further include a light-projecting device 4000, located on the receiving side 1001 of the optical sphere 1000, for receiving a light source and focusing the light source into parallel light, projecting it onto the sample 100 to be tested. See also... Figure 3As shown, in one embodiment, the detection device may further include a display 5000, which is data-connected to the detector 2000 and is used to display the various data described above. For example... Figure 4 As shown, the corresponding data for evaluating the characteristics of the same light-converting material using different devices can be displayed on the aforementioned display 5000.
[0049] This application provides a light conversion characteristic detection system, which includes a detection device. Since the specific structure, functional principle, and technical effects of the aforementioned detection device have been described in detail above, they will not be repeated here. Any technical details regarding the aforementioned detection device can be found in the foregoing description.
[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0051] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A detecting device for obtaining light conversion material light conversion characteristics, characterized in that, The detection device comprises: A light tunnel ball (1000) having a receiving side (1001) and a projecting side (1002), the receiving side (1001) and the projecting side (1002) of the light tunnel ball (1000) are directed to different directions, wherein the receiving side (1001) of the light tunnel ball (1000) is used to direct to a sample (100) to be detected, the light tunnel ball (1000) is used to collect a test light transmitted through the sample (100) to be detected, and the projecting side (1002) of the light tunnel ball (1000) is used to project the collected test light outward. A detector (2000) located at the projecting side (1002) of the light tunnel ball (1000), the detector (2000) is used to separate at least the test light projected by the light tunnel ball (1000) into ultraviolet light and visible light.
2. The detection device of claim 1, wherein, The detector (2000) is further used to perform full-spectrum transient detection on the ultraviolet light and visible light separated from the test light.
3. The detection device of claim 2, wherein, The detector (2000) comprises: A multi-channel detection unit (2100) used to perform full-spectrum transient detection on the ultraviolet light and visible light separated from the test light.
4. The detection device of claim 3, wherein, The detector (2000) comprises: A grating (2200) used to separate the test light projected by the light tunnel ball (1000) into ultraviolet light and visible light, and project the separated ultraviolet light and visible light to the multi-channel detection unit (2100).
5. The detection device of claim 4, wherein, The detector (2000) comprises: A slit sheet (2300) having a slit, the test light projected by the light tunnel ball (1000) is used to project to the grating (2200) through the slit of the slit sheet (2300).
6. The detection device of claim 1, wherein, The detection device comprises: A sample stage (3000) located at the receiving side (1001) of the light tunnel ball (1000), the sample stage (3000) has a placement area (3001), the placement area (3001) of the sample stage (3000) is used to place the sample (100) to be detected, at least a part of the placement area (3001) is a light-transmitting structure, and a light source is used to generate the test light by transmitting through the sample (100) to be detected and the light-transmitting structure.
7. The detection device of claim 6, wherein, The light-transmitting structure is provided as a light-transmitting hole or a light-transmitting material.
8. The detection device of claim 1, wherein, The detection device comprises: A light projecting device (4000) located at the receiving side (1001) of the light tunnel ball (1000), used to receive a light source and converge the light source into parallel light, and project to the sample (100) to be detected.
9. The detection device of claim 1, wherein, The sample (100) to be detected is a light conversion material.
10. A light conversion property detection system characterized by comprising: The light conversion characteristic detection system comprises the detection device according to any one of claims 1-9.