Method for rapidly detecting light conversion agent in real time

Abstract

The invention discloses a method for rapidly detecting a light conversion agent in real time, which is suitable for the field of sunlight greenhouses and photovoltaic cells. A light conversion agent absorbs light of a specific wave band under sunlight and emits light of another wave band, however, in the prior art, the spectrum conversion effect of the light conversion agent cannot be directly reflected in real time, ultraviolet-visible diffuse reflection spectrum distortion is easily caused by too strong emitted light, and the abnormal phenomenon exceeding 100% occurs. According to the method, a ground object spectrometer is adopted, a standard white board reflection spectrum is tested and normalized, a standard spectrum sample is used for calibration, a light conversion agent sample is tested, a superposition graph of the reflection spectrum and an emission spectrum is obtained, and the spectrum conversion effect is visually presented. And by dynamically adjusting measurement parameters, different illumination conditions are adapted, and the measurement accuracy is ensured. The method has the characteristics of rapidness, intuition and strong environmental adaptability, can effectively avoid the distortion of the reflection spectrum, and provides an efficient detection means for the research and application of the light conversion agent.

Description

Technical Field

[0001] A method for rapidly and real - time detecting a light - converting agent according to the present invention relates to the technical field of luminescent material measurement. Background Technique

[0002] In the fields of agriculture and photovoltaics, light - converting agents have important application values. In agriculture, light - converting agents can convert light that is difficult for crops to utilize into light beneficial for photosynthesis, improving the yield and quality of agricultural crops; in the photovoltaic field, light - converting agents can optimize the spectral utilization efficiency of solar cells, slow down the aging of polymer films, and extend the service life of photovoltaic devices. However, the performance detection and application matching of light - converting agents have always been the key problems restricting the development of this field.

[0003] In the field of plant physiological state monitoring, Sun Gang et al. proposed a solar - induced chlorophyll fluorometer based on the Fraunhofer dark line principle in 2009, which uses solar - induced fluorescence under natural light conditions to monitor the photosynthesis state of plants. However, this technology is mainly applicable to the monitoring of plant canopies and is difficult to be directly applied to the detection of light - converting agents in fields such as solar greenhouses and photovoltaic cells.

[0004] The existing light - converting agent detection technologies mainly rely on fluorescence spectroscopy and ultraviolet - visible diffuse reflectance spectroscopy detection methods. These methods will show abnormal phenomena where the ultraviolet - visible diffuse reflectance spectrum exceeds 100% when the fluorescence intensity is high, resulting in inaccurate measurement of the absorption spectrum, seriously affecting the evaluation of the performance of light - converting agents, and restricting their popularization in practical applications. In addition, traditional fluorescence spectrometers have complex structures and strict requirements for the detection environment, and can only be used in laboratories, unable to meet the needs of rapid and real - time detection in outdoor fields. Although ultraviolet - visible spectrometers can measure absorption spectra, they cannot obtain emission spectrum information, and the measurement results are inaccurate when the quantum efficiency of light - converting agents is relatively high, making it difficult to comprehensively evaluate the performance of light - converting agents.

[0005] To solve the above problems, the present invention proposes a method for rapidly and real - time detecting a light - converting agent based on a ground - object spectrometer. This method directly measures the absorption spectrum of the light - converting agent through a ground - object spectrometer, avoiding the abnormal diffuse reflectance spectrum phenomenon caused when the emitted photons plus the reflected photons of the light - converting agent are greater than the reflected photons of the BaSO4 reference, and at the same time, by dynamically adjusting the measurement parameters, ensuring accurate measurement results can be obtained under different light conditions. Compared with the existing technology, the present invention can not only quickly and intuitively reflect the spectral conversion effect of the light - converting agent, but also has significant advantages such as strong environmental adaptability and accurate and reliable measurement results. Summary of the Invention

[0006] The present invention aims to provide a method and instrument for quickly and real-time detecting a light conversion agent, overcome the deficiencies of the existing detection technologies, realize real-time, quick and accurate detection of the performance of the light conversion agent in a real environment, and judge its applicable application scenarios according to the detection results, so as to provide reliable data for the efficient application of the light conversion agent in fields such as agriculture and photovoltaics.

[0007] The present invention adopts the following method for quickly and real-time detecting a light conversion agent: Instrument preparation and calibration: Use a ground object spectrometer for detection. Before the test, scan a white board with the tester, and record the reflectance, background and dark signal data. Normalize the test results of the white board reflectance spectrum, and use this as the benchmark for subsequent sample test data correction. By dynamically adjusting the measurement parameters, record the reflectance, background and dark signal data during the process of scanning the white board, and normalize the test results, and use this as the benchmark for subsequent sample test data correction. At the same time, use a standard spectral sample to calibrate the wavelength and intensity of the tester to ensure the accuracy and reliability of the tester.

[0008] Sample test: Adjust the ground object spectrometer to a suitable position so that it can stably receive the solar spectral signal reflected from the earth's surface. Conduct a reflectance spectrum test on the light conversion agent sample to be tested, and monitor and record environmental parameters such as light intensity, angle, and object distance in real time. To improve the accuracy of the test data, conduct 3 - 6 reflectance spectrum tests on the light conversion agent sample to be tested under the same test environmental conditions, and take the average value as the daylight real-time conversion spectrum data of the light conversion agent sample.

[0009] Judgment of application scenario: Judge the application scenario according to the reflection characteristics of the light conversion agent sample in different light regions. If the light conversion agent sample has absorption in the green light region or (and) ultraviolet light region and reflects in the red light region, far red light region or (and) blue light region, it is determined that the light conversion agent is suitable for agricultural greenhouse films, and it can convert the ultraviolet light and green light that are less absorbed by crops into more absorbed blue light, red light or (and) far red light, promoting the photosynthesis and photomorphogenesis of crops. If the absorption region of the light conversion agent sample is in the ultraviolet light region and the emission light is in the visible light region, it is determined that the light conversion agent can be applied to photovoltaic encapsulation films to slow down the aging rate of polymer films and improve the photoelectric conversion efficiency of solar cells.

[0010] The present invention also provides an instrument for realizing the above method for quickly and real-time detecting a light conversion agent: The instrument includes a main screen (1), a handle (2), a physical collection button (3), a aiming button (4), a power switch (5), a rangefinder (6), a camera (7), a laser aiming port (8), a field of view angle lens (9), a spectrometer test port (10), and a power interface (11). The main screen (1) is used to display test data, operation interfaces, and detection results; the handle (2) facilitates the operator to hold and operate the device; the physical collection button (3) is used to start the collection of sample test data; the aiming button (4) cooperates with the laser aiming port (8) to determine the position of the test target; the power switch (5) controls the startup and shutdown of the device; the rangefinder (6) is used to measure the distance between the device and the test target to ensure an appropriate test distance; the camera (7) can assist in observing the test site conditions; the field of view angle lens (9) is used to determine the field of view range of the test; the spectrometer test port (10) is used to receive and analyze the spectral signals reflected by the light conversion agent sample; the power interface (11) is used to connect to an external power source or a charging device to provide power support for the device.

[0011] Limitations of the prior art: Existing fluorescence spectroscopy and ultraviolet-visible diffuse reflectance spectroscopy detection technologies have significant limitations when testing light conversion agents. When the sum of the fluorescent emission photons and reflected photons of the light conversion agent is greater than the BaSO4 reference reflected photons, the ultraviolet-visible diffuse reflectance spectrum may exhibit an abnormal phenomenon exceeding 100%, resulting in an inability to accurately test the reflectance spectrum. This phenomenon seriously affects the accurate evaluation of the spectral conversion effect of the light conversion agent and limits its promotion in practical applications. In addition, existing technologies usually cannot reflect the spectral conversion effect of the light conversion agent under natural light conditions in real time and intuitively, and it is difficult to adapt to complex and variable natural light conditions.

[0012] Compared with the prior art, the advantages of the present invention are as follows: 1. Avoid spectral distortion: The ground object spectrometer can directly test the absorption and reflection spectra, avoiding abnormal phenomena in the diffuse reflectance spectrum caused by excessive fluorescence intensity, and ensuring the accuracy and reliability of the measurement results; 2. Fast and efficient detection: The detection method of the present invention only requires a single measurement to simultaneously obtain the absorption and emission spectral information of the light conversion agent. Compared with the multiple measurements of traditional fluorescence spectrometers, it greatly saves the detection time, improves the detection efficiency, and can meet the requirements of on-site rapid detection; 3. Accurate and reliable detection results: By measures such as normalizing the test results of the whiteboard reflectance spectrum, calibrating with standard spectral samples, and taking the average value of multiple measurements, the influence of instrument errors and environmental factors is effectively reduced, and the accuracy and reliability of the detection data are improved; 4. Precise judgment of application scenarios: According to the reflection characteristics of the light conversion agent in different light regions, it can accurately judge whether the light conversion agent is suitable for agricultural greenhouse films or photovoltaic adhesive films, providing a scientific basis for the rational application of the light conversion agent; 5. Easy and flexible operation: The detection instrument of the present invention is reasonably designed with a compact structure, making it convenient to carry and operate. Operators can easily complete the test operation through components such as the handle and buttons, and it can be used in different on-site environments without being restricted by laboratory conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram (front view) of the detection instrument of the present invention.

[0014] Figure 2 is a schematic structural diagram (rear view) of the detection instrument of the present invention.

[0015] Figure 3 is the LAMSO:0.03Eu 2+ fluorescence spectrum.

[0016] Figure 4 is the LAMSO:0.03Eu 2+ ultraviolet-visible diffuse reflectance spectrum.

[0017] Figure 5 is the daylight real-time conversion spectrum of LAMSO:0.03Eu 2+ tested by the test method of the present invention.

[0018] Figure 6 is the LAMSO:0.07Cr 3+ fluorescence spectrum.

[0019] Figure 7 is the LAMSO:0.07Cr 3+ ultraviolet-visible diffuse reflectance spectrum.

[0020] Figure 8 is the daylight real-time conversion spectrum of LAMSO:0.07Cr 3+ tested by the test method of the present invention.

[0021] Figure 9 is the LAMSO:0.03Eu 2+ , 0.07Cr 3+ fluorescence spectrum.

[0022] Figure 10 is the LAMSO:0.03Eu 2+ , 0.07Cr 3+ ultraviolet-visible diffuse reflectance spectrum.

[0023] Figure 11 is the daylight real-time conversion spectrum of LAMSO:0.03Eu 2+ , 0.07Cr 3+ tested by the test method of the present invention.

[0024] Figure 12 It is CaS:Eu 2+ , the fluorescence spectra of CaBr2 and CaF2.

[0025] Figure 13 It is CaS:Eu 2+ , the UV-Vis diffuse reflection spectra of CaBr2 and CaF2.

[0026] Figure 14 It is the daylight real-time conversion spectra of CaS:Eu 2+ , CaBr2 and CaF2 tested by the test method of the present invention.

[0027] Figure 15 It is Eu 3+ (TTA n )–NZL fluorescence spectra.

[0028] Figure 16 It is Eu 3+ (TTA n )–NZL UV-Vis diffuse reflection spectra.

[0029] Figure 17 It is the daylight real-time conversion spectra of Eu 3+ (TTA n )–NZL tested by the test method of the present invention.

[0030] Figure 18 It is the daylight real-time conversion spectra effect diagram of LAMSO:0.03Eu 2+ , 0.07Cr 3+ tested by the ground object spectrometer.

[0031] Explanation of reference numerals: Main screen (1), handle (2), physical acquisition button (3), aiming button (4), power switch (5), rangefinder (6), camera (7), laser aiming port (8), field of view angle lens (9), spectrometer test port (10), power interface (11). Detailed implementation manners

[0032] Implementation steps for the rapid real-time detection of the light conversion agent by the ground object spectrometer: 1. Instrument preparation and calibration: Select a ground object spectrometer with a high-sensitivity spectral detection module. The scanning wavelength range of this tester is 300 - 1100 nm, the wavelength accuracy is better than ±0.5 nm, and the spectral resolution is better than 2 nm. Place the standard whiteboard at a suitable test position, ensuring that the surface of the whiteboard is flat, clean, and can completely cover the field of view of the tester. Use the ground object spectrometer to scan the whiteboard, and record the reflectivity, background, and dark signal data of each scan. Under the same test environmental conditions (such as the same light intensity, temperature, humidity, etc.), conduct multiple reflectance spectral tests on the whiteboard, generally 3 - 6 times, and take the average value of the test results as the reflectance spectral data of the whiteboard. Then perform normalization processing on this average value data to make its reflectivity unified to 1.0 within a specific wavelength range, forming a benchmark for subsequent sample test data correction; 2. Calibrate the tester using a standard spectral sample: Carry the ground object spectrometer to the test site, and select a suitable test position according to the site conditions and test requirements. Measure the distance between the device and the standard spectral sample using a rangefinder (6), and adjust it to the optimal test distance, generally between 0.05 - 0.10 meters, to ensure that the camera (7) can stably receive the solar spectral signal reflected by the sample. Use the aiming button (4) and the laser aiming port (8) to accurately align the tester with the standard spectral sample. Press the physical acquisition button (3) to start the reflectance spectral test on the standard spectral sample. According to the operation manual of the tester, perform wavelength calibration and intensity calibration in sequence. Wavelength calibration ensures that the spectral wavelengths measured by the tester are accurate, and intensity calibration guarantees the measurement accuracy of the spectral signal intensity by the tester. During the calibration process, by adjusting the internal parameters of the tester, make the test results of the tester on the standard spectral sample consistent with the standard values; 3. Sample test: Replace the standard spectral sample with the sample to be tested for the light conversion agent and place it at the test position. Use the aiming button (4) and the laser aiming port (8) to accurately align the tester with the sample to be tested for the light conversion agent. Press the physical acquisition button (3) to start the reflectance spectral test on the sample to be tested for the light conversion agent. During the test process, observe the surface condition of the sample using the camera (7) to ensure that the test process is normal. At the same time, the sensors inside the tester continuously monitor and record environmental parameters such as light intensity, angle, and object distance, and store these data synchronously with the spectral test data. Under the same test environmental conditions, conduct multiple reflectance spectral tests on the sample to be tested for the light conversion agent, and the number of tests is the same as that for the whiteboard test (3 - 6 times). After each test is completed, the tester automatically stores the test data. After the test is over, calculate the average value of the multiple test results to obtain the reflectance spectral data of the sample to be tested for the light conversion agent; 4. Application Scenario Judgment: Determine the application scenario of the light conversion agent sample based on its reflection characteristics in different light regions. If the light conversion agent sample absorbs in the green light region or (and) the ultraviolet light region and reflects in the red light region, far - red light region or (and) blue light region, it is determined that the light conversion agent is suitable for agricultural greenhouse films, which can convert the ultraviolet light and green light that crops absorb less into the blue light, red light or (and) far - red light that crops absorb more, promoting the photosynthesis and photomorphogenesis of crops. If the absorption region of the light conversion agent sample is in the ultraviolet light region and the emission light is in the visible light region, it is determined that the light conversion agent can be applied to photovoltaic adhesive films to slow down the aging rate of polymer films and improve the photoelectric conversion efficiency of solar cells.

[0033] Example 1 Purple - to - Blue Light Conversion Agent: In the present invention, La 0.97 Al 10.97 Mg 0.10 Si 0.13 O 18 :0.03Eu 2+ (abbreviated as LAMSO:0.03Eu 2+ ) light conversion agent, with the patent number CN202410905715.5.

[0034] (1) Use a fluorescence spectrometer to test the LAMSO:0.03Eu 2+ light conversion agent, select appropriate excitation and monitoring wavelengths, and perform excitation and emission spectrum scans within a certain scanning range (such as the excitation wavelength range is 200 - 400 nm and the emission wavelength range is 350 - 600 nm) to obtain fluorescence spectrum data, as Figure 3 shown.

[0035] (2) Use an ultraviolet - visible spectrometer to test the LAMSO:0.03Eu 2+ light conversion agent: Put the LAMSO:0.03Eu 2+ light conversion agent into a sample cell to make a test sample. Place the sample on the sample stage of the ultraviolet - visible spectrometer and perform absorption spectrum scans in the wavelength range of 200 - 900 nm. Before each measurement, perform baseline correction with a reference sample (barium sulfate) to ensure the accuracy of the measurement, and record the absorption spectrum data, as Figure 4 shown.

[0036] (3) Use a ground object spectrometer to test the LAMSO:0.03Eu 2+ light conversion agent to obtain the real - time sunlight conversion spectrum, as Figure 5 shown.

[0037] Example 2 Purple - Green - to - Far - Red Light Conversion Agent: In the present invention, LaAl 10.73 Mg 0.10 Si 0.10 O18 : 0.07Cr 3+ (LAMSO: 0.07Cr 3+ )Light conversion agent, with patent number CN202410905715.5.

[0038] (1)Use a fluorescence spectrometer to test the LAMSO: 0.07Cr 3+ light conversion agent, select appropriate excitation and monitoring wavelengths, and perform excitation and emission spectrum scans within a certain scanning range (such as the excitation wavelength range is 250 - 700 nm and the emission wavelength range is 600 - 900 nm) to obtain fluorescence spectrum data, as Figure 6 shown.

[0039] (2)Use an ultraviolet-visible spectrometer to test the LAMSO: 0.07Cr 3+ light conversion agent: Put the LAMSO: 0.07Cr 3+ light conversion agent into a sample cell to make a test sample. Place the sample on the sample stage of the ultraviolet-visible spectrometer and perform absorption spectrum scans in the wavelength range of 200 - 900 nm. Before each measurement, perform baseline correction with a reference sample (barium sulfate) to ensure the accuracy of the measurement, and record the absorption spectrum data, as Figure 7 shown.

[0040] (3)Use a ground object spectrometer to test the LAMSO: 0.07Cr 3+ light conversion agent to obtain the real-time solar conversion spectrum, as Figure 8 shown.

[0041] Example 3 Violet-green to blue-red light conversion agent: The present invention selects La 0.97 Al 10.70 Mg 0.10 Si 0.13 O 18 : 0.03Eu 2+ , 0.07Cr 3+ (LAMSO: 0.03Eu 2+ , 0.07Cr 3+ )Light conversion agent, with patent number CN202410905715.5.

[0042] (1)Use a fluorescence spectrometer to test the LAMSO: 0.03Eu 2+ , 0.07Cr 3+ light conversion agent, select appropriate excitation and monitoring wavelengths, and perform excitation and emission spectrum scans within a certain scanning range (such as the excitation wavelength range is 200 - 650 nm and the emission wavelength range is 350 - 820 nm) to obtain fluorescence spectrum data, as Figure 9 shown.

[0043] (2) Use an ultraviolet-visible spectrometer to test LAMSO:0.03Eu 2+ , 0.07Cr 3+ light conversion agent: Put LAMSO:0.03Eu 2 + , 0.07Cr 3+ light conversion agent into the sample cell to make a test sample. Place the sample on the sample stage of the ultraviolet-visible spectrometer and perform absorption spectrum scanning in the wavelength range of 200 - 900 nm. Before each measurement, perform baseline correction with a reference sample (barium sulfate) to ensure the accuracy of the measurement, and record the absorption spectrum data, as Figure 10 shown.

[0044] (3) Use a ground object spectrometer to test LAMSO:0.03Eu 2+ , 0.07Cr 3+ light conversion agent to obtain the real-time sunlight conversion spectrum, as Figure 11 shown.

[0045] Example 4 Inorganic green-to-red light conversion agent: The present invention selects the CaS:Eu 2+ , CaBr2, CaF2 light conversion agent reported in ACS Agricultural Science&Technology, 2021, 1, 55 - 63.

[0046] (1) Use a fluorescence spectrometer to test CaS:Eu 2+ , CaBr2, CaF2 light conversion agent, select appropriate excitation and monitoring wavelengths, and perform excitation and emission spectrum scanning within a certain scanning range (such as the excitation wavelength range is 200 - 650 nm and the emission wavelength range is 550 - 750 nm) to obtain fluorescence spectrum data, as Figure 12 shown.

[0047] (2) Use an ultraviolet-visible spectrometer to test CaS:Eu 2+ , CaBr2, CaF2 light conversion agent: Put CaS:Eu 2+ , CaBr2,CaF2 light conversion agent into the sample cell to make a test sample. Place the sample on the sample stage of the ultraviolet-visible spectrometer and perform absorption spectrum scanning in the wavelength range of 200 - 900 nm. Before each measurement, perform baseline correction with a reference sample (barium sulfate) to ensure the accuracy of the measurement, and record the absorption spectrum data, as Figure 13 shown.

[0048] (3) Use a ground object spectrometer to test CaS:Eu 2+, CaBr2, CaF2 light conversion agent, obtaining real-time conversion spectrum of sunlight, as Figure 14 shown.

[0049] Example 5 Organic Violet-to-Red Light Conversion Agent: In the present invention, the Eu 3+ (TTA n )–NZL light conversion agent reported in Chemical Communication, 2014, 50, 13680 is selected.

[0050] (1) Using a fluorescence spectrometer to test the Eu 3+ (TTA n )–NZL light conversion agent, select appropriate excitation and monitoring wavelengths, and perform excitation and emission spectrum scanning within a certain scanning range (such as the excitation wavelength range is 200 - 550 nm and the emission wavelength range is 550 - 750 nm) to obtain fluorescence spectrum data, as Figure 15 shown.

[0051] (2) Using an ultraviolet-visible spectrometer to test the Eu 3+ (TTA n )–NZL light conversion agent: Put the Eu 3+ (TTA n )–NZL light conversion agent into the sample cell to make a test sample. Place the sample on the sample stage of the ultraviolet-visible spectrometer and perform absorption spectrum scanning in the wavelength range of 200 - 900 nm. Before each measurement, perform baseline correction with a reference sample (barium sulfate) to ensure the accuracy of the measurement, and record the absorption spectrum data, as Figure 16 shown.

[0052] (3) Using a ground object spectrometer to test the Eu 3+ (TTA n )–NZL light conversion agent to obtain the real-time conversion spectrum of sunlight, as Figure 17 shown.

[0053] As Figure 3 , 4 , 5 respectively describe the fluorescence spectrum diagram, ultraviolet-visible diffuse reflection spectrum, and real-time conversion spectrum of sunlight of LAMSO:0.03Eu 2+ . Figure 5 The real-time conversion spectrum of sunlight in Figure 3 shows that the light conversion agent absorbs ultraviolet light in the range of 300 - 400 nm after being irradiated by sunlight, corresponding to the excitation spectrum region in Figure 4 and the ultraviolet light absorption region in Figure 4The abnormal phenomenon that the diffuse reflection spectrum exceeds 100% in the range of 250 - 300 nm in China. The abnormal phenomenon is that when the sample is excited in the range of 250 - 300 nm, stronger photons are emitted, so the total number of reflected photons is greater than the number of incident photons, and the reflectivity exceeds 100%.

[0054] Such as Figure 6 、 7 、8 respectively describe the fluorescence spectrum, ultraviolet-visible diffuse reflection spectrum, and daylight real-time conversion spectrum of LAMSO: 0.07Cr 3+ From the Figure 8 daylight real-time conversion spectrum of LAMSO:0.07Cr 3+ , three excitation bands of Cr 3+ ( 4 A2→ 4 T1, 4 A2→ 4 T1 and 4 A2→ 4 T2) are resolved, which is consistent with the fluorescence spectrum and the ultraviolet-visible diffuse reflection spectrum. The reflection peak at 675 - 850 nm corresponds to the emission peak in the fluorescence spectrum of Cr 3+ . In the daylight real-time conversion spectrum, the protruding wavelength of 763 nm is affected by the red component of sunlight.

[0055] Such as Figure 9 、 10 、11 respectively describe the fluorescence spectrum, ultraviolet-visible diffuse reflection spectrum, and daylight real-time conversion spectrum of LAMSO:0.03Eu 2+ , 0.07Cr 3+ . Figure 11 In the daylight real-time conversion spectrum of LAMSO:0.03Eu 2+ , 0.07Cr 3+ , there are three absorption peaks of the light conversion agent in the range of 300 - 675 nm, and the peak at 319 nm is enhanced compared with the case of undoped Eu 2+ ( Figure 8 ), corresponding to the 2+ f7→ 4 f6 4 d1 excitation of Eu 5 . The peaks at 300 - 350 nm, 350 - 475 nm, and 475 - 650 nm respectively correspond to the 3+ of Cr 4 A2→ 4 T1, 4 A2→ 4 T1 and 4 A2→ 4The T2 transition is phase-matched and consistent with the excitation peaks in the fluorescence spectrum and the ultraviolet-visible diffuse reflection spectrum. The reflection peak at 675 - 850 nm corresponds to the photoluminescence emission of Cr 3+ .

[0056] As Figure 12 , 13 , 14 respectively describe the fluorescence spectrum, ultraviolet-visible diffuse reflection spectrum, and daylight real-time conversion spectrum of CaS:Eu 2+ , CaBr2, and CaF2. Figure 14 In 2+ , for the daylight real-time conversion spectra of CaS:Eu

[0057] CaBr2, and CaF2, in the ranges of 300 - 380 nm and 400 - 625 nm, the light conversion agent has two absorption peaks, which are consistent with the excitation peaks in the fluorescence spectrum and the ultraviolet-visible diffuse reflection spectrum. The reflection peak at 600 - 700 nm corresponds to the emission peak in the fluorescence spectrum. Figure 15 , 16 , 17 respectively describe the fluorescence spectrum, ultraviolet-visible diffuse reflection spectrum, and daylight real-time conversion spectrum of Eu 3+ (TTA n )–NZL. Figure 17 In 3+ for the daylight real-time conversion spectrum of Eu n (TTA 3+ )–NZL, the absorption peak in the range of 300 - 550 nm is consistent with the excitation peaks in the fluorescence spectrum and the ultraviolet-visible diffuse reflection spectrum. Meanwhile, in the range of 575 - 750 nm, the characteristic peak value of Eu Figure 16 corresponds to the emission peak in the fluorescence spectrum. At the same time, this method can prevent the distortion of the ultraviolet-visible diffuse reflection spectrum caused when the sum of the emitted photons and the reflected photons is greater than the BaSO4 reference reflected photons, such as the abnormal phenomenon where the diffuse reflection spectrum exceeds 100% in the range of 200 - 250 nm in

[0058] Figure 18 describes the technical process of using a ground object spectrometer to test the daylight real-time conversion spectrum of the light conversion agent.

[0059] In view of the limitations of the existing detection technology for light conversion agents, the present invention proposes a rapid real-time detection method and instrument based on a ground object spectrometer, effectively solving problems such as spectral distortion, insufficient real-time performance, inaccurate judgment of application scenarios, and poor environmental adaptability. Its daylight real-time conversion spectrum detection ability bridges the gap between laboratory characterization and actual deployment, providing a powerful tool for optimizing the research and development and application of multifunctional light conversion agents.

[0060] The above is only an application example of the present invention in typical scenarios, and the actual application scenarios of the present invention are not limited to these examples. For professionals in related fields, on the basis of not violating the core principles of the present invention, the achievements obtained by expanding its application to other similar scenarios or making appropriate adjustments and optimizations should also be covered within the protection scope of the present invention.

Claims

1. A method for rapid real-time detection of a light conversion agent, characterized in that: The following steps are involved: Step (1), instrument preparation and calibration: adjust the ground object spectrometer to a suitable position so that it can stably receive the sunlight spectrum signal reflected from the earth's surface and test the reflection spectrum of the whiteboard; Step (2), by dynamically adjusting the measurement parameters, recording the reflectivity, background and dark signal data during the scanning of the whiteboard, and normalizing the test results to serve as a benchmark for subsequent sample test data correction; Step (3), using a standard spectrum sample to perform wavelength calibration and intensity calibration on the tester; Step (4), testing the sunlight real-time conversion spectrum of the light conversion agent: replacing the standard spectrum sample on the sample stand of the ground feature spectrometer with the light conversion agent sample to test the sunlight real-time conversion spectrum; Step (5), judging the light conversion properties and application scenarios of the light conversion agent sample based on the sunlight real-time conversion spectrum obtained by the test.

2. The method for rapid real-time detection of light conversion agents according to claim 1, characterized in that: The light conversion agent refers to a material that can absorb light of a certain wavelength band and emit light of another wavelength band under sunlight irradiation, and the material exhibits a spectrum conversion effect under natural lighting conditions.

3. The method for rapid real-time detection of light conversion agents according to claim 1, characterized in that: The reflectance spectrum of the whiteboard tested in step (1) is specifically as follows: the reflectance spectrum of the whiteboard is tested 3-6 times under the same test environment conditions, the average value of the test results is taken as the reflectance spectrum data of the whiteboard, and then normalized to eliminate the influence of the instrument and environmental conditions.

4. The method for rapid real-time detection of light conversion agents according to claim 1, characterized in that: The sunlight real-time conversion spectrum test of the light conversion agent described in step (3) is specifically as follows: 3-6 reflection spectrum tests are performed on the light conversion agent sample under the same test environment conditions, and the average value of the test results is taken as the reflection spectrum data of the light conversion agent sample to improve the accuracy and stability of the measurement.

5. The method for rapid real-time detection of light conversion agents according to claim 1, characterized in that: The ground object spectrometer is equipped with a high-precision spectral detection module with a scanning wavelength range of 300-1100 nm, a wavelength accuracy better than ±0.5 nm, a spectral resolution better than 2 nm, and can monitor and dynamically adjust measurement parameters in real time to adapt to different lighting conditions.

6. The method for rapid real-time detection of light conversion agents according to claim 1, characterized in that: The ground feature spectrometer comprises a main screen (1), a handle (2), a physical acquisition button (3), an aiming button (4), a power switch (5), a rangefinder (6), a camera (7), a laser aiming port (8), a field of view angle lens (9), a spectrometer test port (10), and a power interface (11), and has real-time data processing and dynamic adjustment functions to adapt to complex environmental conditions.

7. The method for rapid real-time detection of light conversion agents according to claim 1, characterized in that: Step (4) is specifically as follows: if the measured absorption area of ​​the daylight conversion spectrum of the light conversion agent is in the green light region and / or the ultraviolet light region, and the reflection area is in the red light region, the far-red light region, and / or the blue light region, then it is determined that the light conversion agent is suitable for agricultural greenhouse film.

8. The method for rapid real-time detection of light conversion agents according to claim 1, characterized in that: Step (4) is specifically as follows: if the measured absorption region of the sunlight conversion spectrum of the light conversion agent sample is in the ultraviolet light region and the emission light is in the visible light region, it is determined that the light conversion agent can be applied to photovoltaic adhesive films.

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