In-situ atmosphere control device for photoluminescence spectral testing and photoluminescence spectrometer

Abstract

The application provides an in-situ atmosphere control device and a photoluminescence spectrometer for photoluminescence spectrum test, comprising a sample bin and a gas supply pipe group. The inside of the sample bin is provided with a sample containing cavity, and the sample containing cavity is provided with a sample limiting structure. The sample bin is provided with an openable and closable sample taking and placing opening, a gas inlet joint and a gas outlet joint. The gas supply pipe group is connected with the gas inlet joint. The in-situ atmosphere control device for photoluminescence spectrum test can place a prepared sample into the sample containing cavity before test, then fix the sample bin on a test instrument, inject the required gas into the sample containing cavity by the gas supply pipe group, and the gas outlet joint is used for discharging the original gas in the sample containing cavity. The in-situ atmosphere control device for photoluminescence spectrum test can keep the sample position unchanged, change the atmosphere in the sample bin through the gas supply pipe group, and realize the effect of in-situ test of the photoluminescence spectrum of the sample.

Description

Technical Field

[0001] This invention relates to the field of spectral testing equipment technology, and in particular to an in-situ atmosphere control device and a photoluminescence spectrometer for photoluminescence spectral testing. Background Technology

[0002] In materials science, chemical engineering, and biomedical research, photoluminescence spectroscopy (PL) has demonstrated unique advantages and potential as a non-contact, non-destructive analytical method. This technique reveals the intrinsic structure, electronic states, and optical properties of materials by exciting electronic transitions within them and observing the energy distribution of the subsequently released photons. However, the luminescence properties of materials are often highly dependent on their surrounding environment, such as oxygen, nitrogen, vacuum, or specific gas environments. Changes in these environmental factors directly affect key parameters such as luminescence intensity, peak shift, and luminescence lifetime, thus impacting the accurate evaluation and optimization of material performance.

[0003] Currently, some technologies have attempted to address the problem of photoluminescence spectroscopy testing under different atmospheres, but significant shortcomings remain. For example, non-in-situ testing methods require sealing samples under different atmospheres before testing. This method is not only cumbersome and time-consuming, but also prone to differences in testing conditions between different atmospheres or samples. These differences may stem from minute variations in factors such as sample position, thickness, and surface condition, but can significantly impact experimental results. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides an in-situ atmosphere control device and a photoluminescence spectrometer for photoluminescence spectroscopy testing, aiming to solve the problem that the methods for non-in-situ testing of photoluminescence spectra of materials under different atmospheres in related technologies are cumbersome to operate, time-consuming and laborious, and that the test conditions differ between different atmospheres or different samples, thus affecting the experimental results.

[0005] This invention provides an in-situ atmosphere control device for photoluminescence spectroscopy testing, comprising: The sample chamber includes a chamber body and two covers. The interior of the chamber body is a hollow cuboid structure, with the hollow portion forming a sample receiving cavity. The sample receiving cavity is also a cuboid structure, with both ends open, forming sample loading and unloading ports. Cylindrical connectors are respectively provided at the left and right ends of the chamber body. The cylindrical connectors are axially continuous, with one end near the chamber body connected to the chamber body and the other end detachably connected to the cover. The cover is detachably connected to the chamber body and is used to close or open the sample receiving cavity. A sample limiting structure is provided inside the sample receiving cavity. An air inlet is provided on the sample chamber. The sample chamber is equipped with an inlet and an outlet connector, both of which connect to the inner and outer sides of the sample receiving cavity. When the sample chamber is connected to the fixture of the photoluminescence spectroscopy instrument, the rear side of the sample receiving cavity extends upward and backward at an angle. The angle between the bottom surface of the sample receiving cavity and the horizontal plane is greater than or equal to 0 degrees and less than or equal to 20 degrees. The angle between the bottom surface of the sample receiving cavity and the rear side is greater than or equal to 90 degrees and less than or equal to 120 degrees. The bottom surface and the rear side of the sample receiving cavity form the sample limiting structure. When the sample posture is fixed by the sample limiting structure, the incident light of the photoluminescence spectroscopy instrument enters the sample at a 30-degree angle. A gas supply pipeline assembly includes at least one gas supply pipeline. Each gas supply pipeline is connected in series with a gas storage device, a ball valve, and a flow meter. The flow meter is located downstream of the ball valve. When there is only one gas supply pipeline, the downstream end of the gas supply pipeline is directly connected to the gas inlet connector. When there are two or more gas supply pipelines, the downstream ends of multiple gas supply pipelines are connected to the gas inlet connector through a gas mixing device.

[0006] According to the in-situ atmosphere control device for photoluminescence spectroscopy testing provided by the present invention, one of the air inlet connector and the air outlet connector is disposed on the chamber cover and the other is disposed on the chamber body, or both the air inlet connector and the air outlet connector are disposed on the chamber cover, or both the air inlet connector and the air outlet connector are disposed on the chamber body.

[0007] According to the in-situ atmosphere control device for photoluminescence spectroscopy testing provided by the present invention, the cylindrical connector is threadedly connected to the chamber cover.

[0008] According to the in-situ atmosphere control device for photoluminescence spectroscopy testing provided by the present invention, a sealing ring is provided between the chamber cover and the cylindrical joint.

[0009] The present invention also provides a photoluminescence spectrometer, including the in-situ atmosphere control device for photoluminescence spectroscopy testing as described above.

[0010] The present invention has the following advantages due to the adoption of the above technical solutions: This invention provides an in-situ atmosphere control device for photoluminescence spectroscopy testing, comprising a sample chamber and a gas supply pipe assembly. The sample chamber contains a sample receiving cavity with a sample limiting structure. The sample chamber has an openable / closable sample loading / unloading port, an inlet connector, and an exhaust connector, all connecting to the inner and outer sides of the sample receiving cavity. The gas supply pipe assembly is connected to the inlet connector. Before testing, the prepared sample can be placed into the sample receiving cavity of the sample chamber through the sample loading / unloading port, and the sample chamber is sealed. The sample limiting structure restricts sample movement. The sample chamber is then fixed to the testing instrument. Finally, the required experimental gas is injected into the sample receiving cavity through the inlet connector using the gas supply pipe assembly, and the exhaust connector is used to expel the existing gas from the sample receiving cavity. The sample fixing device for photoluminescence spectroscopy testing provided by the present invention can keep the sample position stationary and change the atmosphere in the sample chamber by gas supply pipe group to achieve the effect of in-situ testing of the photoluminescence spectrum of the sample. It is simple to operate and can ensure that the test conditions are consistent for the same sample under different atmospheres or for different samples under the same atmosphere.

[0011] Furthermore, the photoluminescence spectrometer provided by the present invention has the same advantages as described above because it is equipped with an in-situ atmosphere control device for photoluminescence spectroscopy testing as described above. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of an in-situ atmosphere control device for photoluminescence spectroscopy testing provided in an embodiment of the present invention; Figure 2 This is an exploded view of an in-situ atmosphere control device for photoluminescence spectroscopy testing provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the working state of an in-situ atmosphere control device for photoluminescence spectroscopy testing provided in an embodiment of the present invention.

[0014] Figure label: 110: Chamber body; 111: Sample receiving cavity; 120: Chamber cover; 130: Air inlet connector; 140: Air outlet connector; 210: Gas supply pipeline; 220: Ball valve; 230: Flow meter; 240: Gas mixing device; 250: Gas cylinder. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0016] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] Furthermore, the terms "first" and "second" are used 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 as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of 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. "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.

[0020] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0021] This invention provides an in-situ atmosphere control device for photoluminescence spectroscopy testing, comprising a sample chamber and a gas supply pipe assembly. The sample chamber contains a sample receiving cavity with a sample limiting structure. The sample chamber has an openable / closable sample loading / unloading port, an inlet connector, and an exhaust connector. The gas supply pipe assembly is connected to the inlet connector. During testing, the sample is placed into the sample receiving cavity through the sample loading / unloading port, and then the sealed sample chamber is fixed to the testing instrument, keeping the sample in a fixed position. The atmosphere within the sample receiving cavity is then altered by the gas supply pipe assembly to achieve in-situ photoluminescence spectroscopy testing of the sample under different atmospheres.

[0022] The following is combined with Figures 1 to 3 The present invention describes an in-situ atmosphere control device for photoluminescence spectroscopy testing.

[0023] An embodiment of the present invention provides an in-situ atmosphere control device for photoluminescence spectroscopy testing, comprising a sample chamber and a gas supply pipe assembly.

[0024] The sample chamber includes a sample receiving cavity 111 for placing samples. A sample limiting structure is installed within the sample receiving cavity 111. The sample chamber also features an openable sample loading / unloading port, an air inlet connector 130, and an exhaust connector 140. All three connectors connect to the inner and outer sides of the sample receiving cavity 111. A gas supply pipe assembly is connected to the air inlet connector 130.

[0025] Specifically, the sample chamber contains a sample receiving cavity 111 for placing samples. A sample limiting structure ensures that the sample within the sample receiving cavity 111 remains stationary when the sample chamber is fixed to the testing instrument, thus achieving in-situ detection requirements. The sample chamber has an openable and closable sample loading / unloading port. When a sample needs to be placed, the port is opened; after placement, it is closed to ensure the sample receiving cavity 111 is a sealed space. An inlet connector 130 is used to introduce the required experimental gas into the sample receiving cavity 111. An exhaust connector 140 is used to exhaust the gas from the sample receiving cavity 111. For example, before testing, when injecting the required experimental gas into the sample receiving cavity 111, the exhaust connector 140 can be simultaneously opened. After the existing gas in the sample receiving cavity 111 is completely exhausted, the exhaust connector 140 is closed, ensuring the sample receiving cavity 111 contains only the required experimental gas. The gas supply pipe assembly is used to introduce the required experimental gas into the sample receiving cavity 111 through the inlet connector 130.

[0026] The in-situ atmosphere control device for photoluminescence spectroscopy testing provided by this invention can fix the sample through a sample chamber. By introducing different gases into the sample chamber through a gas supply pipe assembly, the atmosphere inside the sample chamber can be changed in situ, enabling in-situ photoluminescence spectroscopy testing of the sample under different atmospheres. This sample fixing device is simple to operate and can ensure consistent testing conditions for the same sample under different atmospheres or for different samples under the same atmosphere.

[0027] In some embodiments, when the sample chamber is in the working position, the rear side of the sample receiving cavity 111 extends upward and backward at an angle, the angle between the bottom surface of the sample receiving cavity 111 and the horizontal plane is greater than or equal to 0 degrees and less than or equal to 20 degrees, and the angle between the bottom surface of the sample receiving cavity 111 and the rear side is greater than or equal to 90 degrees and less than or equal to 120 degrees. At this time, the bottom surface and the rear side of the sample receiving cavity 111 form a sample limiting structure.

[0028] It should be noted that for powdered samples, the experimenter needs to process the sample. The powdered sample can be coated on a quartz plate and then placed into the sample receiving cavity 111. For thin film samples, they can be placed directly into the sample receiving cavity 111.

[0029] For example, after placing the quartz disc into the sample receiving cavity 111, the side of the quartz disc coated with the sample can be tilted backward and rest against the inclined rear side of the sample receiving cavity 111, while the bottom of the quartz disc is supported on the bottom surface of the sample receiving cavity 111. This ensures that the quartz disc is stably supported within the sample receiving cavity 111 and remains stationary.

[0030] In a preferred embodiment, the sample receiving cavity 111 can be a cuboid or cube-shaped cavity. After the sample chamber is fixed to the testing equipment, the rear side of the sample receiving cavity 111 can extend upwards and tilt backwards at a 30-degree angle, while the bottom surface of the sample receiving cavity 111 is perpendicular to the rear side. When a quartz sheet or thin film sample is placed into the sample receiving cavity 111, the quartz sheet or thin film sample can fit against the rear side and bottom surface of the sample receiving cavity 111, making the positioning more stable.

[0031] In some embodiments, the sample chamber may include a chamber body 110 and a chamber cover 120. A sample receiving cavity 111 is disposed inside the chamber body 110, and at least one end of the sample receiving cavity 111 penetrates through the chamber body 110. One end of the sample receiving cavity 111 forms a sample loading and unloading port. The chamber cover 120 is closable and connected to the chamber body 110 for closing or opening the sample receiving cavity 111.

[0032] In one specific embodiment, the chamber 110 can also be a cuboid structure, and the sample receiving cavity 111 inside it is also cuboid in shape. The left end of the sample receiving cavity 111 extends through the chamber 110, and the left end of the sample receiving cavity 111 forms a sample loading and unloading port. The chamber cover 120 is detachably connected to the left side of the chamber 110 to open or close the sample receiving cavity 111.

[0033] In another specific embodiment, the chamber 110 is also a cuboid structure, and the internal sample receiving cavity 111 is also cuboid. Unlike the previous embodiment, in this embodiment, the left and right ends of the sample receiving cavity 111 extend through the chamber 110. The dimensions of the sample receiving cavity 111 can be 40 mm to 50 mm in length along the left-right direction, 20 mm to 50 mm in width along the front-back direction, and 3 mm to 5 mm in height along the top-bottom direction. A chamber cover 120 is detachably connected to the left and right ends of the chamber 110, respectively.

[0034] In some embodiments, one of the air intake connector 130 and the exhaust connector 140 is disposed on the cover 120 and the other is disposed on the body 110, or both the air intake connector 130 and the exhaust connector 140 are disposed on the cover 120, or both the air intake connector 130 and the exhaust connector 140 are disposed on the body 110.

[0035] For example, when both ends of the sample receiving cavity 111 penetrate the normal chamber 110, both ends of the chamber 110 are provided with detachable chamber covers 120. In this case, the air inlet connector 130 can be set on the left chamber cover 120, and the exhaust connector 140 can be set on the right chamber cover 120.

[0036] In some embodiments, the bin body 110 is threadedly connected to the bin cover 120.

[0037] For example, when both ends of the sample receiving cavity 111 penetrate the chamber body 110, cylindrical connectors are provided at the left and right ends of the chamber body 110. The inner diameter of the cylindrical connector is larger than the size of the opening of the sample receiving cavity 111. External threads are provided on the outer side of the cylindrical connector, and internal threads are provided on the inner side of the chamber cover 120. The chamber cover 120 and the cylindrical connector are connected by threads to achieve the connection between the chamber cover 120 and the chamber body 110, thereby sealing the sample receiving cavity 111.

[0038] The air intake connector 130 and the exhaust connector 140 can be respectively installed on the two compartment covers 120. Taking the compartment cover 120 on the left end as an example, the air intake connector 130 can be installed at the center of the end face of the compartment cover 120 on the side away from the compartment body 110.

[0039] Alternatively, in some other embodiments, the hopper body 110 and the hopper cover 120 can be connected by flanges. Flanges are provided at the open end of the hopper body 110 and on the side of the hopper cover 120 near the hopper body 110, and the two are detachably connected by the flanges.

[0040] In some embodiments, in order to improve the sealing performance between the chamber body 110 and the cover 120, a sealing ring 300 can be provided between the chamber body 110 and the cover 120.

[0041] In some embodiments, the gas supply pipeline assembly may include at least one gas supply pipeline 210, with a gas storage device and a gas flow control component connected in series on each gas supply pipeline 210. The downstream end of the gas supply pipeline 210 may be directly connected to the gas inlet connector 130, or when the number of gas supply pipelines 210 is greater than or equal to two, the downstream ends of multiple gas supply pipelines 210 may be connected to the gas inlet connector 130 through a gas mixing device 240. The gas flow control component is used to individually adjust the gas flow of each gas supply pipeline 210.

[0042] Specifically, the gas supply pipeline 210 may include two lines, or of course one, three, four or more lines. The downstream ends of the multiple gas supply pipelines 210 are all connected to the gas mixing device 240, which is connected to the gas inlet connector 130. Each gas supply pipeline 210 is equipped with a gas storage device and a gas flow control component. The gas storage device is located at the upstream end of the gas supply pipeline 210. The gas flow control component includes a ball valve 220 and a flow meter 230. Both the ball valve 220 and the flow meter are located downstream of the gas storage device, and the flow meter 230 is located downstream of the ball valve 220.

[0043] In use, according to experimental requirements, the ball valve 220 of the multi-channel gas supply pipeline 210 is switched on and off, and the opening of the gas path is adjusted by the flow meter 230 to change the content of each gas entering the gas mixing device 240, thereby changing the gas composition of the mixed gas. After being mixed by the gas mixing device 240, the mixed gas enters the sample receiving chamber 111 through the gas inlet connector 130, thereby changing the gas environment of the sample.

[0044] In one specific embodiment, the sample chamber includes a chamber body 110 and two chamber covers 120. The interior of the chamber body 110 is a hollow cuboid structure, with the hollow portion forming a sample receiving cavity 111. The sample receiving cavity 111 is also a cuboid structure, with both ends open, forming sample loading and unloading ports. Cylindrical connectors are respectively provided at the left and right ends of the chamber body 110. The cylindrical connectors are axially continuous, with the end closest to the chamber body 110 connected to it, and external threads are provided on the outer side of the cylindrical connectors. The chamber cover 120 is a cylindrical shape with one open end and one closed end, with internal threads on its inner side. The chamber cover 120 is threadedly connected to the chamber body 110, forming a sealed space inside the chamber body 110 when the chamber cover 120 is connected to both ends of the chamber body 110. The intake connector 130 is connected to the center of the left side of the left cover 120, and the exhaust connector 140 is connected to the center of the right side of the right cover 120.

[0045] The gas supply pipeline assembly includes two gas supply pipelines 210 and a gas mixing device 240. Each gas supply pipeline 210 includes a gas cylinder 250, a ball valve 220 and a flow meter 230. The gas cylinder 250, the ball valve 220 and the flow meter 230 are connected in series along the gas path. The downstream end of the gas supply pipeline 210 is connected to the gas mixing device 240, and the downstream end of the gas mixing device 240 is connected to the gas inlet connector 130.

[0046] When performing photoluminescence spectroscopy testing, first open the left-side cover 120 and place the sample into the sample receiving cavity 111. For powdered samples, the sample needs to be coated onto a quartz plate; for thin film samples, they can be placed directly into the sample receiving cavity 111. The rear side of the quartz plate or thin film sample rests against the rear side of the sample receiving cavity 111 and is supported on the bottom surface of the sample receiving cavity 111. Then close the cover 120 and fix the assembled sample cavity onto the clamp of the solid support of the testing instrument. At this time, the rear side of the sample receiving cavity 111 is tilted backward to keep the sample stable and stationary, thus achieving the effect of in-situ testing.

[0047] Then, according to the experimental requirements, adjust the ball valves 220 on each gas supply pipeline 210 to control the gas on / off switch, and adjust the flow meter 230 to adjust the intake volume of different gases. After the gases are mixed in the gas mixing device 240, they enter the sample receiving chamber 111 through the gas inlet connector 130. When the gas supply starts, simultaneously open the exhaust connector 140, or connect a gas collection device to the exhaust connector 140, so that the incoming gas will empty the original gas in the sample receiving chamber 111 to prevent the original gas from affecting the gas environment. When all the original gas has been emptied, the exhaust connector 140 can be closed, or the online continuous gas supply can be maintained.

[0048] Then, adjust the position of the solid support for focusing, so that the incident light from the testing instrument enters the sample at a 30-degree angle. This can effectively reduce the interference of scattered and stray light, ensure the accuracy and authenticity of the test results, and protect the spectrometer detector from damage by strong light.

[0049] The sample fixing device for photoluminescence spectroscopy testing provided by this invention has the following advantages: First, a gas supply pipe assembly is set up to achieve precise control and rapid switching of the atmosphere around the sample during the test, ensuring a high degree of consistency and repeatability of test conditions, and fundamentally solving the problem of incomparable data caused by non-in-situ testing.

[0050] Second, the design of the sample receiving cavity 111 is optimized to expand the sample receiving range, meet the testing needs of samples of different shapes and sizes, and at the same time reduce the influence of factors such as sample position and thickness on the test results.

[0051] Third, the incident light direction is at a 30-degree or 60-degree angle to the sample, which effectively reduces interference from scattered and stray light, ensuring the accuracy and authenticity of the test results and protecting the spectral detector from damage by strong light. Furthermore, the device allows for flexible adjustment of the sample position and precise focusing, effectively improving the signal-to-noise ratio of the fluorescence signal.

[0052] Embodiments of the present invention also provide a photoluminescence spectrometer, which has the same advantages as described above because it is equipped with an in-situ atmosphere control device for photoluminescence spectroscopy testing as described above.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An in-situ atmosphere control device for photoluminescence spectroscopy testing, characterized in that, include: The sample chamber includes a chamber body (110) and two chamber covers (120). The interior of the chamber body (110) is a hollow cuboid structure, with the hollow portion forming a sample receiving cavity (111). The sample receiving cavity (111) is also a cuboid structure, with both ends of the sample receiving cavity (111) open, forming a sample loading / unloading port. Cylindrical connectors are respectively provided at the left and right ends of the chamber body (110), with the cylindrical connectors extending axially. One end of the cylindrical connector near the chamber body (110) is connected to the chamber body (110), and the other end is detachably connected to the chamber cover (120). The chamber cover (120) is detachably connected to the chamber body (110) and is used to close or open the sample receiving cavity (111). A sample limiting structure is provided inside the sample receiving cavity (111). The sample chamber is provided with an air inlet connector (130) and an exhaust connector (140). The air inlet connector (130) and the exhaust connector (140) are both connected to the inner and outer sides of the sample receiving cavity (111). When the sample chamber is connected to the fixture of the photoluminescence spectroscopy test instrument, the rear side of the sample receiving cavity (111) extends upward and backward at an angle. The angle between the bottom surface of the sample receiving cavity (111) and the horizontal plane is greater than or equal to 0 degrees and less than or equal to 20 degrees. The angle between the bottom surface of the sample receiving cavity (111) and the rear side is greater than or equal to 90 degrees and less than or equal to 120 degrees. The bottom surface and the rear side of the sample receiving cavity (111) form the sample limiting structure so that when the posture of the sample is fixed by the sample limiting structure, the incident light of the photoluminescence spectroscopy test instrument enters at a 30-degree angle with the sample. The gas supply pipeline assembly includes at least one gas supply pipeline (210). Each gas supply pipeline (210) is connected in series with a gas storage device, a ball valve (220), and a flow meter (230). The flow meter (230) is located downstream of the ball valve (220). When there is only one gas supply pipeline (210), the downstream end of the gas supply pipeline (210) is directly connected to the inlet connector (130). When there are two or more gas supply pipelines (210), the downstream ends of multiple gas supply pipelines (210) are connected to the inlet connector (130) through a gas mixing device (240).

2. The in-situ atmosphere control device for photoluminescence spectroscopy testing according to claim 1, characterized in that, One of the air intake connector (130) and the exhaust connector (140) is disposed on the compartment cover (120) and the other is disposed on the compartment body (110), or both the air intake connector (130) and the exhaust connector (140) are disposed on the compartment cover (120), or both the air intake connector (130) and the exhaust connector (140) are disposed on the compartment body (110).

3. The in-situ atmosphere control device for photoluminescence spectroscopy testing according to claim 1, characterized in that, The cylindrical connector is threadedly connected to the bin cover (120).

4. The in-situ atmosphere control device for photoluminescence spectroscopy testing according to claim 1 or 3, characterized in that, A sealing ring is provided between the hopper cover (120) and the cylindrical joint.

5. A photoluminescence spectrometer, characterized in that, Includes the in-situ atmosphere control device for photoluminescence spectroscopy testing as described in any one of claims 1 to 4.

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