Electrospectral test system for fluorescence and absorption spectrometer

Abstract

The invention relates to the technical field of electro-spectrum testing, in particular to an electro-spectrum testing system for a fluorescence and absorption spectrograph, which comprises a power supply module, a control module and a power supply module, and is characterized in that the power supply module is used for providing voltage for a sample to generate an electroluminescence phenomenon when the sample is subjected to fluorescence testing; the light source module is used for providing a transmission light source for the sample when the sample is subjected to transmission test; the detection module is used for detecting the intensity of fluorescence emitted during a sample fluorescence test and converting the intensity into a first electric signal, and is also used for detecting the intensity change of transmitted light or reflected light during a sample transmission test and converting the intensity change into a second electric signal; the processing module is used for receiving the first electric signal or the second electric signal and carrying out data processing to generate a corresponding digital signal; the display module is used for receiving the digital signal generated by the processing module and displaying the processed data in a graph form; the sample table module is used for placing a to-be-tested sample. The use function and efficiency of an existing instrument are improved, and meanwhile the purchase cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of electrospectroscopy testing, and in particular to an electrospectroscopy testing system for fluorescence and absorption spectrometers. Background Art

[0002] Under the current technical background, electrospectroscopy testing is widely used in semiconductor light-emitting diodes, electrochromic glass, solar panels and other fields. However, customized test systems for these applications are often expensive, which is a considerable burden for many manufacturers. If a single-function electrospectroscopy test system is purchased separately to meet different test requirements, it will lead to low equipment efficiency and serious waste of resources.

[0003] On the other hand, although there are some practical and relatively inexpensive electroluminescence test systems on the market, most of these systems are built by construction and have relatively single functions. Ordinary spectrometers are difficult to meet the multi-wavelength and multi-functional testing needs. This limits the flexibility and scope of application of the test system and cannot meet the growing diversified testing needs.

[0004] In summary, the present invention proposes an electrospectroscopy testing system for fluorescence and absorption spectrometers, which improves the functionality and efficiency of existing instruments while saving procurement costs. Summary of the invention

[0005] To solve the above problems, the present invention provides an electrospectroscopy testing system for fluorescence and absorption spectrometers, which improves the functionality and efficiency of existing instruments while saving procurement costs.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows: an electrospectral testing system for fluorescence and absorption spectrometers, comprising:

[0007] A power supply module, used for providing a voltage for the sample to generate electroluminescence when the sample is subjected to a fluorescence test;

[0008] A light source module, used for providing a transmission light source for the sample when the sample is subjected to a transmission test;

[0009] The detection module is used to detect the fluorescence intensity of the sample during the fluorescence test and convert it into a corresponding electrical signal, which is defined as the first electrical signal; it is also used to detect the change in the intensity of the transmitted light or reflected light during the transmission test of the sample and convert it into an electrical signal, which is defined as the second electrical signal;

[0010] A processing module, used for receiving the first electrical signal and the second electrical signal, and performing data processing to generate a corresponding digital signal;

[0011] A display module, used to receive the digital signal generated by the processing module and display the processed data in the form of a graph;

[0012] The sample stage module is used to place the sample to be tested.

[0013] The technical principle of the above scheme is as follows: when conducting a fluorescence test, a specific excitation voltage is provided to the sample through the power module, so that the sample is excited to produce electroluminescence, the fluorescence intensity emitted by the sample is measured through the detection module and the fluorescence signal is converted into an electrical signal, which is transmitted to the processing module for data processing to generate a corresponding digital signal, and then these digital signals are displayed in the form of a spectrum through the display module; when conducting an absorption test, a transmitted light source is provided to the sample through the light source module, the intensity change of the transmitted light or the reflected light is measured through the detection module, and these light signals are converted into electrical signals, which are transmitted to the processing module for data processing to generate a corresponding digital signal, and then these digital signals are displayed in the form of a spectrum through the display module.

[0014] The above scheme has the following beneficial effects:

[0015] 1. In this solution, the system can perform both fluorescence testing and transmission or reflection testing, thus fully covering different samples and different testing requirements. This versatility makes the system highly versatile and flexible, and can adapt to a variety of scientific research and industrial testing scenarios.

[0016] 2. In this solution, the detection module can accurately detect the fluorescence intensity of the sample during the fluorescence test, as well as the changes in the intensity of the transmitted light or reflected light during the transmission test, and convert them into electrical signals. This high-precision detection capability ensures the accuracy and reliability of the test results.

[0017] 3. In this solution, the processing module can receive the electrical signal output by the detection module, perform data processing, and generate corresponding digital signals. The display module intuitively presents these digital signals in the form of graphs, making it easier for users to analyze and interpret the test results. This data processing and visualization function improves the readability and ease of use of the test results.

[0018] 4. Compared with the traditional single-function test system, this solution integrates multiple functional modules to achieve multi-functional testing while reducing costs. Users do not need to purchase multiple single-function test equipment to meet various test needs, thus saving equipment purchase and maintenance costs.

[0019] Furthermore, the detection module is also used to decompose the fluorescence signal into monochromatic light of different wavelengths.

[0020] Beneficial effects: The detection module can decompose the fluorescence signal into monochromatic light of different wavelengths, so that the system can more accurately measure the fluorescence intensity at each wavelength, which helps to reduce errors and improve the accuracy of test results. At the same time, by decomposing the fluorescence signal into monochromatic light, the system can obtain more detailed spectral information, which helps users to have a deeper understanding of the fluorescence characteristics of the sample, such as the position, shape and intensity of the fluorescence peak. This information is of great significance for analyzing the chemical composition, structure and interaction of the sample. This function of the detection module enables the system to test fluorescence signals of multiple wavelengths simultaneously or sequentially. This provides users with a wider range of test options, which can meet the multi-wavelength test requirements under different samples and different test needs.

[0021] Furthermore, the detection module is used to focus the fluorescence signal onto a detector; the detector includes at least one of a photodiode and a photomultiplier tube.

[0022] Beneficial effects: The system provides a variety of detector options such as photodiodes and photomultiplier tubes, which can be flexibly configured according to different test requirements and sample characteristics. This design enhances the adaptability and flexibility of the system, enabling it to cope with more diverse test scenarios. By selecting the right detector, the detection performance of the system can be optimized. For example, for low-intensity fluorescence signals, photodiodes can be selected for detection; for high-intensity fluorescence signals or scenarios that require higher sensitivity, photomultiplier tubes can be selected. This optimization helps improve the detection accuracy and reliability of the system.

[0023] Furthermore, the light source module is used to decompose the radiation source into monochromatic lights of different wavelengths.

[0024] Beneficial effects: By decomposing the incident light source into monochromatic light, the light source module provides the system with a variety of wavelength light sources to choose from. This design enhances the flexibility of the system, allowing users to select appropriate wavelengths for testing based on different test requirements and sample characteristics. At the same time, this also makes the system applicable to more diverse test scenarios. The light source module can accurately decompose the incident light source into monochromatic light of different wavelengths, which greatly improves the resolution of the spectrum. In spectral analysis, resolution is a crucial parameter that determines the system's ability to distinguish adjacent spectral lines. High-resolution spectral analysis can provide more accurate spectral information, helping users to more accurately understand the chemical composition, structure, and interactions of the sample.

[0025] Furthermore, a control module is included, which is used to control and monitor the entire electrospectroscopy test system, including at least the switching of the light source and the selection of the wavelength.

[0026] Beneficial effects: Through the control module, the system can monitor the status of the light source and the wavelength selection in real time, ensuring that the light source operates within the normal working range and avoiding abnormal conditions such as overcurrent and overvoltage. This monitoring function helps to enhance the stability and safety of the system, protect the system from damage, and extend its service life.

[0027] Furthermore, the sample stage module includes a steady-state transient fluorescence spectrometer and a full-wavelength ultraviolet-visible-near-infrared spectrometer.

[0028] Beneficial effects: The signal-to-noise ratio and sensitivity of the steady-state transient fluorescence spectrometer and the full-wavelength UV-visible-near-infrared spectrometer are both high. The two sets of equipment used as the basic equipment for detecting electroluminescence will have better signal response than other fiber optic spectrometer construction systems.

[0029] Furthermore, the sample stage module also includes a sample holder that can be used in both the stable transient fluorescence spectrometer and the full-wavelength ultraviolet visible near-infrared spectrometer;

[0030] The sample holder includes a first base, a supporting column is fixedly connected to the top of the first base, a rotating base for adjusting the angle between the sample and the detection light path is rotatably connected to the top of the supporting column, a first guide base is fixedly connected to the top of the rotating base, a second guide base which slides along the length direction of the first guide base is slidably connected to the top of the first guide base, a first nut for adjusting the sliding distance of the second guide base is provided at the connection between the first guide base and the second guide base, a third guide base which slides along the width direction of the second guide base is slidably connected to the second guide base, a second nut for adjusting the sliding distance of the third guide base is provided at the connection between the second guide base and the third guide base, a fourth guide base which slides along the vertical direction is slidably connected to the side of the third guide base away from the second guide base, a third nut for adjusting the sliding distance of the fourth guide base is provided at the connection between the third guide base and the fourth guide base, a sample clamp is vertically fixedly connected to the side of the fourth guide base away from the third guide base, and a plurality of linear arrays of conductive connectors for electrically connecting the sample to a power supply module are provided at the bottom of the sample clamp.

[0031] Beneficial effect: The sample holder realizes precise adjustment and positioning of the sample in three-dimensional space through the design of multiple layers of guide seats (first guide seat, second guide seat, third guide seat, fourth guide seat).

[0032] The sliding connection between each layer of guide seats, combined with the corresponding nut adjustment, allows the sample to move in different directions (length, width), thereby meeting the specific requirements of different experiments for the sample position. This design allows the sample stage module to flexibly adapt to different types of spectrometers, improving the versatility and utilization of the equipment. Through fine nut adjustment, the sample position can be fine-tuned to ensure the precise position of the sample in the spectrometer, thereby improving the accuracy and reliability of the experiment. The conductive connector design at the bottom of the sample clamp facilitates the electrical connection between the sample and the power module, providing convenience for experiments that require electrical excitation or measurement.

[0033] Furthermore, the sample holder also includes a second base for absorption testing and a third base for fluorescence testing, and the second base and the third base are detachably connected to the first base respectively.

[0034] Beneficial effects: The dedicated design of the second base and the third base are optimized for absorption testing and fluorescence testing, respectively, so that the same set of sample holders can meet different types of experimental requirements, improving the applicability and flexibility of the sample holders, allowing laboratories to use resources more efficiently without having to prepare multiple sets of equipment for different types of tests. Bases designed for different test types can better adapt to experimental conditions and reduce the impact of external factors on experimental results. For example, in fluorescence testing, the third base may have better stability to ensure accurate measurement of fluorescence signals; while in absorption testing, the second base may have a more optimized sample placement position to improve test accuracy. The detachable connection design allows the second and third bases to be easily removed or installed from the first base, making it convenient for laboratory personnel to quickly replace the bases according to experimental needs, helping to improve experimental efficiency and reduce experimental preparation time, while also making it convenient for laboratory personnel to clean and maintain the bases.

[0035] Furthermore, the second base is rectangular; and the third base is circular.

[0036] Beneficial effect: The second base is rectangular and the third base is circular, which can meet the internal dimensions of the steady-state transient fluorescence spectrometer and the full-wavelength UV-visible-near-infrared spectrometer. The bases for absorption test and fluorescence test are rectangular and circular respectively, and can be disassembled when using electroabsorption spectroscopy test.

[0037] Furthermore, the back of the sample holder is in a suspended state.

[0038] Beneficial effect: The back of the sample holder is designed to be suspended, which optimizes the light irradiation path and can meet the test of transmittance.

[0039] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic flow chart of an embodiment of an electrospectroscopy testing system for fluorescence and absorption spectrometers of the present invention;

[0041] Figure 2 It is an axonometric diagram of a sample holder during fluorescence testing of an embodiment of an electrospectroscopy testing system for fluorescence and absorption spectrometer of the present invention;

[0042] Figure 3 It is an axonometric diagram of a sample holder during absorption testing of an embodiment of an electrospectroscopy testing system for fluorescence and absorption spectrometer of the present invention;

[0043] Figure 4 The figure is a schematic diagram of the optical path of an embodiment of the electrospectroscopy testing system for fluorescence and absorption spectrometers of the present invention.

[0044] The figure marks in the drawings of the specification include: 1. second base; 2. first base; 3. support column; 4. rotating base; 5. first guide base; 6. conductive connector; 7. sample clamp; 8. third nut; 9. third guide base; 10. second nut; 11. second guide base; 12. fourth guide base; 13. third base; 14. first nut. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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 are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The following is further described in detail through specific implementation methods:

[0049] Example:

[0050] like Figure 1 , Figure 2 , Figure 3 and Figure 4 Shown: Electrospectroscopy test system for fluorescence and absorption spectrometers, including:

[0051] The power module is used to provide the sample with a voltage to generate electroluminescence when the sample is subjected to fluorescence testing. Electroluminescence is a luminescence phenomenon that converts electrical energy into light energy. By applying voltage to the material, interband recombination occurs inside the material, which is most commonly seen in semiconductor light-emitting diodes (LEDs). When a sample (usually a solid or liquid) is subjected to a sufficiently high electric field, the electrons inside it will be excited to a high energy level. When these electrons return to a low energy level, they will release energy, which is usually manifested in the form of light (i.e. fluorescence). The voltage provided by the power module is the key factor in stimulating this process.

[0052] The light source module is used to provide a transmission light source for the sample when the sample is subjected to a transmission test. The light source module is used to decompose the transmission light source into monochromatic lights of different wavelengths.

[0053] The detection module is used to detect the fluorescence intensity emitted during the sample fluorescence test and convert it into a corresponding electrical signal, which is defined as the first electrical signal; it is also used to detect the change in the intensity of the transmitted light or reflected light during the sample transmission test and convert it into an electrical signal, which is defined as the second electrical signal.

[0054] The detection module is also used to decompose the fluorescence signal into monochromatic light of different wavelengths. The detection module is used to focus the fluorescence signal onto a detector; the detector includes at least one of a photodiode and a photomultiplier tube.

[0055] The processing module is used to receive the first electrical signal or the second electrical signal, and perform data processing to generate a corresponding digital signal.

[0056] The display module is used to receive the digital signal generated by the processing module and display the processed data in the form of a graph.

[0057] The sample stage module is used to place the sample to be tested.

[0058] It also includes a control module for controlling and monitoring the entire electrospectroscopy test system, including at least the switching of the light source and the selection of the wavelength.

[0059] The sample stage module also includes a sample holder that can be used in combination with a steady-state fluorescence spectrometer and a full-wavelength UV-visible near-infrared spectrometer. Preferably, the steady-state fluorescence spectrometer model is FLS1000 and the full-wavelength UV-visible near-infrared spectrometer model is lambda 1050+. Among them, the steady-state fluorescence spectrometer (model FLS1000) and the full-wavelength UV-visible near-infrared spectrometer (model lambda 1050+) are the most advanced spectrometers for fluorescence and absorption tests on the market. The two sets of spectrometers have good scalability and can be coupled with a variety of accessories. Many in-situ tests such as variable temperature, variable angle, increased laser power, and increased electric field can be expanded. Based on this, the equipment not only has a high signal-to-noise ratio and detection sensitivity, good signal, but also good integration.

[0060] The maximum signal-to-noise ratio of the stable transient fluorescence spectrometer FLS1000 is 30000:1, and the minimum step size is 0.01nm, which is better than the fluorescence spectrophotometers used by many research groups. The detection sensitivity of the full-wavelength UV-visible near-infrared spectrometer is less than 525μA / lm, which is better than the UV spectrophotometers in many laboratories. Such a high signal-to-noise ratio and high sensitivity device used to detect electroluminescence will have a better signal response than other fiber optic spectrometer construction systems. The detector of the stable transient fluorescence spectrometer includes both the photomultiplier tube PMT-900 and the PMT-1700 detector. The test wavelength range covers 200-1700nm, which can meet the spectral testing of the visible and near-infrared regions on one device. Therefore, it can meet the color gamut index evaluation of LEDs in the visible light region, and also meet the defect luminescence research of silicon-based materials of solar cells in the near-infrared region. The detectors of the full-wavelength UV-visible-near-infrared spectrometer are photomultiplier tubes and semiconductor PbS detectors. The UV-visible-near-infrared spectrum test wavelength range covers 250-2500nm and does not require manual switching. It can easily test the transmittance, reflectivity, haze and other properties of glass samples and is easy to use.

[0061] In particular, the sample chambers of both the steady-state fluorescence spectrometer and the full-wavelength UV-visible-near-infrared spectrometer are relatively large, which facilitates the modification of the sample chambers and the placement of samples. At the same time, after making corresponding changes to the two devices (a small hole is drilled at the front end of the sample chamber for threading the wires to facilitate the migration of the power module's wires in or out), they can easily meet the darkroom environment of the test through appropriate light-shielding treatment to avoid interference from ambient light.

[0062] The sample holder comprises a first base 2, a support column 3 is fixedly connected to the top of the first base 2, a rotating base 4 for adjusting the angle between the sample and the detection light path is rotatably connected to the top of the support column 3, a first guide seat 5 is screwed to the top of the rotating base 4, a second guide seat 11 sliding along the length direction of the first guide seat 5 is slidably connected to the top of the first guide seat 5, and the sliding cooperation mode is preferably sliding block sliding groove cooperation, a first nut 14 for adjusting the second guide seat 11 is threadedly connected at the connection between the first guide seat 5 and the second guide seat 11, a third guide seat 9 sliding along the width direction of the second guide seat 11 is slidably connected to the second guide seat 11, and the sliding cooperation mode is preferably sliding block sliding groove cooperation, a second nut 10 for adjusting the sliding distance of the third guide seat 9 is threadedly connected at the connection between the second guide seat 11 and the third guide seat 9, a fourth guide seat 12 sliding along the vertical direction is slidably connected to the left side of the third guide seat 9, and the sliding cooperation mode is preferably sliding block sliding groove cooperation (such as Figure 3 ), the connection between the third guide seat 9 and the fourth guide seat 12 is threadedly connected with a third nut 8 for adjusting the sliding distance of the fourth guide seat 12, and the left side of the fourth guide seat 12 is vertically screwed with a sample clamp 7 (such as Figure 3 ), the bottom of the sample holder 7 is integrally formed with a plurality of conductive connectors 6 in a linear array for electrically connecting the sample to the power module. The sample holder also includes a second base 1 for absorption testing and a third base 13 for fluorescence testing, and the second base 1 and the third base 13 are detachably connected to the first base 2, preferably bolted or cylindrical pin connected. The second base 1 is rectangular; the third base 13 is circular. The back of the sample holder 7 is suspended.

[0063] Specific implementation process: Taking the fluorescence detection of the sample as an example, first use the steady-state fluorescence spectrometer FLS1000 as the basic equipment for the fluorescence detection of the sample, then clamp the sample on the sample holder through the sample clamp 7, select the third base 13 (circular) corresponding to the steady-state fluorescence spectrometer, connect the third base 13 with the first base 2 of the sample holder through screws, and in order to avoid the third base 13 and the second base 1 being installed in reverse with the first base 2, two cylindrical pins are set on the top of the second base 1 and the third base 13 for auxiliary positioning; after the installation is completed, the sample holder holding the sample is installed in the corresponding position of the sample chamber of the steady-state fluorescence spectrometer FLS1000. Since the electroluminescence test does not require a light source, the direction of the position where the sample is placed needs to be completely changed, and it only needs to be upright facing the detection direction for testing (such as Figure 4 -a).

[0064] When testing the transmittance of a sample (absorption test), a full-wavelength UV-visible near-infrared spectrometer lambda1050+ is used as the test equipment. Two parallel light paths pass through the sample and directly enter the detector. The blue light path is the reference light path, and the orange light path is the sample light path. When testing the transmittance of a sample, it is necessary to calculate the ratio of the light intensity after the light beam passes through the sample to the incident light intensity. When placing the sample, the sample must allow light to pass through the middle, so that the back of the sample holder 7 is suspended (such as Figure 4 -b).

[0065] When conducting fluorescence testing or absorption testing, the angle of each test will be different, so the rotating seat 4 is rotated to achieve a 360° rotation of the sample holder 7, thereby controlling the angle of the sample to conform to the optical path of the two devices. Secondly, some samples, such as reflective glass, have strong reflections themselves, and are easily disturbed by reflected signals when measuring electroluminescence. Therefore, by rotating the first nut 14, the second nut 10 and the third nut 8, the corresponding second guide seat 11, the third guide seat 9 and the fourth guide seat 12 are controlled to slide accordingly, thereby fine-tuning the sample position in six directions, which can not only prevent the sample from being disturbed by the reflected signal, but also fine-tune the sample left and right and up and down to align it with the focused optical path.

[0066] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. Electrospectroscopy test system for fluorescence and absorption spectrometers, characterized in that: include: A power supply module, used for providing a voltage for the sample to generate electroluminescence when the sample is subjected to a fluorescence test; A light source module, used for providing a transmission light source for the sample when the sample is subjected to a transmission test; The detection module is used to detect the fluorescence intensity of the sample during the fluorescence test and convert it into a corresponding electrical signal, which is defined as the first electrical signal; it is also used to detect the change in the intensity of the transmitted light or reflected light during the transmission test of the sample and convert it into an electrical signal, which is defined as the second electrical signal; A processing module, used for receiving the first electrical signal and the second electrical signal, and performing data processing to generate a corresponding digital signal; A display module, used to receive the digital signal generated by the processing module and display the processed data in the form of a graph; The sample stage module is used to place the sample to be tested.

2. The electrospectral testing system for fluorescence and absorption spectrometer according to claim 1, characterized in that: The detection module is also used to decompose the fluorescence signal into monochromatic light of different wavelengths.

3. The electrospectral testing system for fluorescence and absorption spectrometer according to claim 2, characterized in that: The detection module is used to focus the fluorescence signal onto a detector; the detector includes at least one of a photodiode and a photomultiplier tube.

4. The electrospectral testing system for fluorescence and absorption spectrometer according to claim 3, characterized in that: The light source module is used to decompose the incident light source into monochromatic lights of different wavelengths.

5. The electrospectral testing system for fluorescence and absorption spectrometer according to claim 4, characterized in that: It also includes a control module for controlling and monitoring the entire electrospectroscopy test system, including at least the switching of the light source and the selection of the wavelength.

6. The electrospectral testing system for fluorescence and absorption spectrometer according to claim 5, characterized in that: The sample stage module includes a steady-state transient fluorescence spectrometer and a full-wavelength UV-visible-near-infrared spectrometer.

7. The electrospectral testing system for fluorescence and absorption spectrometer according to claim 6, characterized in that: The sample stage module also includes a sample holder that can be used in both a stable transient fluorescence spectrometer and a full-wavelength ultraviolet-visible-near-infrared spectrometer; The sample holder comprises a first base (2), the top of the first base (2) is fixedly connected to a support column (3), the top of the support column (3) is rotatably connected to a rotating seat (4) for adjusting the angle between the sample and the detection light path, the top of the rotating seat (4) is fixedly connected to a first guide seat (5), the top of the first guide seat (5) is slidably connected to a second guide seat (11) that slides along the length direction of the first guide seat (5), a first nut (14) for adjusting the sliding distance of the second guide seat (11) is provided at the connection between the first guide seat (5) and the second guide seat (11), and the second guide seat (11) is slidably connected to a third guide seat (11) that slides along the width direction of the second guide seat (11). 9), a second nut (10) for adjusting the sliding distance of the third guide seat (9) is provided at the connection between the second guide seat (11) and the third guide seat (9), a fourth guide seat (12) slidingly connected in a vertical direction is provided at the side of the third guide seat (9) away from the second guide seat (11), a third nut (8) for adjusting the sliding distance of the fourth guide seat (12) is provided at the connection between the third guide seat (9) and the fourth guide seat (12), a sample holder (7) is vertically detachably connected at the side of the fourth guide seat (12) away from the third guide seat (9), and a plurality of conductive connectors (6) in a linear array for electrically connecting the sample to a power module are provided at the bottom of the sample holder (7).

8. The electrospectral testing system for fluorescence and absorption spectrometer according to claim 7, characterized in that: The sample holder also includes a second base (1) for absorption testing and a third base (13) for fluorescence testing. The second base (1) and the third base (13) are respectively detachably connected to the first base (2).

9. The electrospectral testing system for fluorescence and absorption spectrometer according to claim 8, characterized in that: The second base (1) is rectangular; the third base (13) is circular.

10. The electrospectral testing system for fluorescence and absorption spectrometer according to claim 9, characterized in that: The back of the sample holder (7) is in a suspended state.

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