A method for rapid real-time detection of light conversion agent

Abstract

The application discloses a kind of fast real-time detection light conversion agent method, suitable for sunlight greenhouse and photovoltaic cell field.Light conversion agent absorbs specific waveband light under sunlight and emits another waveband light, but existing technology cannot reflect its spectral conversion effect in real time, intuitively, and is prone to cause ultraviolet visible diffuse reflectance spectrum distortion due to emission light being too strong, with more than 100% abnormal phenomenon.The method uses ground object spectrometer, first tests standard whiteboard reflectance spectrum and normalizes processing, secondly uses standard spectral sample to calibrate, then tests light conversion agent sample, obtains the superposition figure of reflected spectrum and emission spectrum, and intuitively presents spectral conversion effect.Through dynamic adjustment of measurement parameter, adapt to different light conditions, ensure measurement accuracy.The application has the characteristics of fast, intuitive, strong environmental adaptability, can effectively avoid reflectance spectrum distortion, and provides efficient detection means for light conversion agent research and application.

Description

TECHNICAL FIELD

[0001] The application relates to a method for rapidly and real-timely detecting a light conversion agent. BACKGROUND

[0002] The light conversion agent has important application value in the fields of agriculture and photovoltaics. In the field of agriculture, the light conversion agent can convert light that is difficult for crops to utilize into light conducive to photosynthesis, thereby improving crop yield and quality; in the field of photovoltaics, the light conversion agent can optimize the utilization efficiency of solar cells for light spectrum, slow down the aging of polymer films and prolong the service life of photovoltaic equipment. However, the performance detection and application matching of the light conversion agent have been a key problem restricting the development of the field.

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

[0004] The existing light conversion agent detection technology mainly relies on fluorescence spectrum and ultraviolet-visible diffuse reflectance spectrum detection methods. These methods will have an abnormal phenomenon that the ultraviolet-visible diffuse reflectance spectrum exceeds 100% when the fluorescence intensity is high, which leads to the fact that the absorption spectrum cannot be accurately measured, seriously affects the evaluation of the performance of the light conversion agent and limits its popularization in practical applications. In addition, the traditional fluorescence spectrometer has a complex structure and strict requirements for the detection environment, and can only be used in the laboratory, which cannot meet the needs of rapid and real-time detection in the field. Although the ultraviolet-visible spectrometer can measure the absorption spectrum, it cannot obtain the emission spectrum information, and the measurement result is not accurate when the quantum efficiency of the light conversion agent is high, which makes it difficult to comprehensively evaluate the performance of the light conversion agent.

[0005] To solve the above problems, the application provides a method for rapidly and real-timely detecting a light conversion agent based on a ground object spectrometer. The method directly tests the absorption spectrum of the light conversion agent through the ground object spectrometer, avoids the abnormal phenomenon of diffuse reflectance spectrum caused by the fact that the sum of the emitted photons and the reflected photons of the light conversion agent is greater than the reference reflected photons of BaSO4, and simultaneously adjusts the measurement parameters dynamically to ensure that accurate measurement results can be obtained under different light conditions. Compared with the prior art, the application can not only rapidly and intuitively reflect the spectral conversion effect of the light conversion agent, but also has the advantages of strong environmental adaptability, accurate and reliable measurement results and the like. SUMMARY

[0006] The present application aims to provide a method and instrument for rapid real-time detection of light conversion agent, overcome the shortcomings of existing detection technology, realize real-time, rapid and accurate detection of the performance of light conversion agent in real environment, and determine its applicable application scenarios according to the detection results, so as to provide reliable data for efficient application of light conversion agent in the fields of agriculture, photovoltaic and the like.

[0007] The present application adopts the following method for rapid real-time detection of light conversion agent:

[0008] Instrument preparation and calibration: the ground object spectrometer is used for detection. Before testing, the test instrument is used to scan the whiteboard, and the reflectance, background and dark signal data are recorded. The whiteboard reflectance spectrum test result is normalized, which is used as the benchmark for subsequent sample test data correction. By dynamically adjusting the measurement parameters, the reflectance, background and dark signal data are recorded during the scanning of the whiteboard, and the test result is normalized, which is used as the benchmark for subsequent sample test data correction. At the same time, the standard spectral sample is used to calibrate the wavelength and intensity of the test instrument, so as to ensure the accuracy and reliability of the test instrument.

[0009] Sample testing: the ground object spectrometer is adjusted to the appropriate position so that it can stably receive the solar spectrum signal reflected by the earth's surface. The reflectance spectrum of the light conversion agent sample to be tested is tested, and the illumination intensity, angle, object distance and other environmental parameters are monitored and recorded in real time. In order to improve the accuracy of the test data, the reflectance spectrum of the light conversion agent sample to be tested is tested 3-6 times under the same test environment conditions, and the average value is taken as the real-time conversion spectrum data of the sunlight of the light conversion agent sample.

[0010] Application scenario judgment: the application scenario of the light conversion agent sample is judged according to its reflectance characteristics in different light zones. If the light conversion agent sample has absorption in the green light zone or (and) ultraviolet light zone, and reflects in the red light zone, far red light zone or (and) blue light zone, it is determined that the light conversion agent is suitable for agricultural greenhouse film, which can convert the less absorbed ultraviolet light and green light of crops into more absorbed blue light, red light or (and) far red light, so as to promote the photosynthesis and photomorphogenesis of crops. If the absorption zone of the light conversion agent sample is in the ultraviolet light zone, and the emission light is in the visible light zone, it is determined that the light conversion agent can be applied to photovoltaic adhesive film, which can slow down the aging rate of the polymer film and improve the photoelectric conversion efficiency of the solar cell.

[0011] The present application also provides an instrument for realizing the above-mentioned method for rapid real-time detection of light conversion agent:

[0012] The instrument comprises a main screen (1), a handle (2), a physical acquisition button (3), a sighting button (4), a power switch (5), a range finder (6), a camera (7), a laser sighting port (8), a field angle lens (9), a spectrometer test port (10), and a power interface (11). The main screen (1) is used to display test data, an operation interface, and detection results; the handle (2) facilitates an operator to hold and operate the device; the physical acquisition button (3) is used to start sample test data acquisition; the sighting button (4) is used to determine the test target position in cooperation with the laser sighting port (8); the power switch (5) controls the start and stop of the device; the range finder (6) is used to measure the distance between the device and the test target, to ensure that the test distance is appropriate; the camera (7) can assist in observing the test site; the field angle lens (9) is used to determine the field range of the test; the spectrometer test port (10) is used to receive and analyze the light spectrum signal reflected by the light conversion agent sample; and the power interface (11) is used to connect an external power source or a charging device to provide power support for the device.

[0013] Limitations of the prior art: The existing fluorescence spectrum and ultraviolet-visible diffuse reflectance spectrum detection technology has significant limitations when testing light conversion agents. When the fluorescence emission photons of the light conversion agent plus the reflected photons are greater than the reference BaSO4 reflectance photons, the ultraviolet-visible diffuse reflectance spectrum may exhibit an abnormal phenomenon of more than 100%, which makes it impossible 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 popularization in practical applications. In addition, the existing technology cannot reflect the spectral conversion effect of the light conversion agent under natural light conditions in real time and intuitively, and is difficult to adapt to complex and variable natural light conditions.

[0014] Compared with the prior art, the advantages of the present application are:

[0015] 1. Avoiding spectral distortion: The ground object spectrometer can directly test the absorption and reflection spectra, avoiding the abnormal phenomenon of diffuse reflectance spectrum caused by excessive fluorescence intensity, ensuring the accuracy and reliability of the measurement results;

[0016] 2. Fast and efficient detection: The detection method of the present application can simultaneously obtain the absorption and emission spectrum information of the light conversion agent through a single measurement, which greatly saves the detection time and improves the detection efficiency compared with the multiple measurements of the traditional fluorescence spectrometer, and can meet the demand of on-site rapid detection;

[0017] 3. Accurate and reliable detection results: By normalizing the whiteboard reflectance spectrum test results, using standard spectrum samples for calibration, and taking the average 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;

[0018] 4. Application scene judgment is accurate: according to the reflection characteristics of the light conversion agent in different light regions, whether the light conversion agent is suitable for agricultural greenhouse film or photovoltaic adhesive film can be accurately judged, and scientific basis is provided for reasonable application of the light conversion agent;

[0019] 5. Simple and flexible operation: the detection instrument of the application has reasonable design and compact structure, is convenient to carry and operate. The operator can easily complete the test operation through handle, key and other components, and can be used in different field environments, and is not limited by laboratory conditions. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view (front) of the detection instrument of the application.

[0021] Figure 2 It is a structure schematic view (back) of the detection instrument of the application.

[0022] Figure 3 It is LAMSO:0.03Eu 2+ fluorescence spectrum.

[0023] Figure 4 It is LAMSO:0.03Eu 2+ ultraviolet-visible diffuse reflectance spectrum.

[0024] Figure 5 It is the sunlight real-time conversion spectrum of LAMSO:0.03Eu 2+ tested by the test method of the application.

[0025] Figure 6 It is LAMSO:0.07Cr 3+ fluorescence spectrum.

[0026] Figure 7 It is LAMSO:0.07Cr 3+ ultraviolet-visible diffuse reflectance spectrum.

[0027] Figure 8 It is the sunlight real-time conversion spectrum of LAMSO:0.07Cr 3+ tested by the test method of the application.

[0028] Figure 9 It is LAMSO:0.03Eu 2+ , 0.07Cr 3+ fluorescence spectrum.

[0029] Figure 10 It is LAMSO:0.03Eu 2+ , 0.07Cr 3+ ultraviolet-visible diffuse reflectance spectrum.

[0030] Figure 11 The test method of this invention was used to test LAMSO: 0.03Eu. 2+ 0.07Cr 3+ The real-time conversion spectrum of sunlight.

[0031] Figure 12 It is CaS:Eu 2+ Fluorescence spectra of CaBr2 and CaF2.

[0032] Figure 13 It is CaS:Eu 2+ The UV-Vis diffuse reflectance spectra of CaBr2 and CaF2.

[0033] Figure 14 The test method of this invention is used to test CaS:Eu 2+ Real-time solar conversion spectra of CaBr2 and CaF2.

[0034] Figure 15 It is Eu 3+ (TTA n )–NZL fluorescence spectrum.

[0035] Figure 16 It is Eu 3+ (TTA n )–NZL UV-Vis diffuse reflectance spectrum.

[0036] Figure 17 Testing Eu using the test method of this invention 3+ (TTA n )–NZL’s real-time solar conversion spectrum.

[0037] Figure 18 The LAMSO level, measured by the ground-based spectrometer, is 0.03 Eu. 2+ 0.07Cr 3+ A rendering of the real-time conversion spectrum of sunlight.

[0038] Explanation of reference numerals in the attached figures:

[0039] 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 lens (9), spectrometer test port (10), power interface (11). Detailed Implementation

[0040] Implementation steps for rapid real-time detection of light-converting agents using a ground-based spectrometer:

[0041] 1. Instrument preparation and calibration: Select a ground object spectrometer with a high-sensitivity spectral detection module, the test instrument has a scanning wavelength range of 300-1100 nm, a wavelength accuracy better than ±0.5 nm, and a spectral resolution better than 2 nm. Place the standard white plate in the appropriate test position, ensure that the white plate surface is flat, clean, and can completely cover the field of view of the test instrument. Use the ground object spectrometer to scan the white plate, record the reflectance, background and dark signal data of each scan. Under the same test environment conditions (such as the same light intensity, temperature, humidity, etc.), the white plate is tested for multiple times of reflected spectrum, generally 3-6 times, and the average value of the test results is taken as the reflectance spectrum data of the white plate. Then normalize the average value data, so that the reflectance is uniform at 1.0 in a certain wavelength range, forming a benchmark for subsequent sample test data correction;

[0042] 2. Calibration of the test instrument using a standard spectral sample: Take the ground object spectrometer to the test site, select the appropriate test position according to the site conditions and test requirements. Measure the distance between the device and the standard spectral sample with a range finder (6), adjust to the optimal test distance, generally between 0.05-0.10 meters, to ensure that the camera (7) can stably receive the solar spectrum signal reflected by the sample. Use the aiming button (4) and the laser aiming port (8) to accurately aim the test instrument at the standard spectral sample. Press the physical acquisition button (3) to start the reflected spectrum test of the standard spectral sample. According to the test instrument manual, perform wavelength calibration and intensity calibration in turn. Wavelength calibration ensures that the test instrument measures accurate spectral wavelength, and intensity calibration ensures the measurement accuracy of the test instrument for spectral signal intensity. During calibration, adjust the parameters inside the test instrument to make the test results of the test instrument on the standard spectral sample consistent with the standard value;

[0043] 3. Sample testing: Replace the standard spectral sample with the light conversion agent sample to be tested and place it in the test position. Use the aiming button (4) and the laser aiming port (8) to accurately aim the test instrument at the light conversion agent sample to be tested. Press the physical acquisition button (3) to start the reflected spectrum test of the light conversion agent sample to be tested. During the test, use the camera (7) to observe the sample surface to ensure that the test process is normal. At the same time, the sensors inside the test instrument monitor and record the light intensity, angle, object distance and other environmental parameters in real time, and store these data synchronously with the spectral test data. Under the same test environment conditions, test the light conversion agent sample to be tested for multiple times of reflected spectrum, the same number of times as the white plate test (3-6 times). After each test is completed, the test instrument automatically stores the test data. After the test is completed, calculate the average value of the multiple test results to obtain the reflectance spectrum data of the light conversion agent sample to be tested;

[0044] 4. Application scenario judgment: judge the application scenario of the light conversion agent sample according to 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, the far red light region or (and) the blue light region, it is determined that the light conversion agent is suitable for agricultural greenhouse film, which can convert the less absorbed ultraviolet light and green light of crops into more absorbed blue light, red light or (and) far red light, to promote 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 film, which is used to slow down the aging rate of polymer film and improve the photoelectric conversion efficiency of solar cell.

[0045] Example 1: Purple-to-blue light conversion agent:

[0046] The present application selects La 0.97 Al 10.97 Mg 0.10 Si 0.13 O 18 :0.03Eu 2+ (simplified as LAMSO:0.03Eu 2+ ) light conversion agent, patent number CN202410905715.5.

[0047] (1) Test the LAMSO:0.03Eu 2+ light conversion agent by using a fluorescence spectrometer, select appropriate excitation and monitoring wavelengths, and perform excitation and emission spectrum scanning within a certain scanning range (such as excitation wavelength range of 200-400 nm and emission wavelength range of 350-600 nm), to obtain fluorescence spectrum data, as shown in Figure 3 .

[0048] (2) Test the LAMSO:0.03Eu 2+ light conversion agent by using an ultraviolet-visible spectrometer: 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 scanning within 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 shown in Figure 4 .

[0049] (3) Test the LAMSO:0.03Eu 2+ light conversion agent by using a ground object spectrometer to obtain real-time sunlight conversion spectrum, as shown in Figure 5 .

[0050] Example 2: Purple-to-green-to-far-red light conversion agent:

[0051] The present application selects LaAl 10.73 Mg0.10 Si 0.10 O 18 0.07Cr 3+ (LAMSO:0.07Cr) 3+ The light conversion agent has the patent number CN202410905715.5.

[0052] (1) The results of testing LAMSO:0.07Cr using a fluorescence spectrometer were obtained. 3+ Using a light-converting agent, select appropriate excitation and monitoring wavelengths, and perform excitation and emission spectral scans within a certain scanning range (e.g., excitation wavelength range of 250-700 nm and emission wavelength range of 600-900 nm) to obtain fluorescence spectral data. Figure 6 As shown.

[0053] (2) The concentration of LAMSO:0.07Cr was measured using a UV-Vis spectrometer. 3+ Light conversion agent: 0.07Cr LAMSO 3+ The light-converting agent is placed in the sample cell to prepare the test sample. The sample is then placed on the sample stage of a UV-Vis spectrometer, and an absorption spectrum scan is performed within the wavelength range of 200-900 nm. Before each measurement, baseline calibration is performed using a reference sample (barium sulfate) to ensure measurement accuracy. The absorption spectrum data is recorded, such as... Figure 7 As shown.

[0054] (3) LAMSO:0.07Cr was measured using a ground-based spectrometer. 3+ A light-converting agent is used to obtain a real-time conversion spectrum of sunlight, such as... Figure 8 As shown.

[0055] Example 3: Purple-green to blue-red conversion agent:

[0056] This invention uses 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+ The light conversion agent has the patent number CN202410905715.5.

[0057] (1) LAMSO: 0.03Eu was measured using a fluorescence spectrometer. 2+ 0.07Cr 3+Using a light-converting agent, select appropriate excitation and monitoring wavelengths, and perform excitation and emission spectral scanning within a certain scanning range (e.g., excitation wavelength range of 200-650 nm and emission wavelength range of 350-820 nm) to obtain fluorescence spectral data. Figure 9 As shown.

[0058] (2) LAMSO: 0.03Eu was measured using a UV-Vis spectrometer. 2+ 0.07Cr 3+ Light conversion agent: 0.03E MSO 2 + 0.07Cr 3+ The light-converting agent is placed in the sample cell to prepare the test sample. The sample is then placed on the sample stage of a UV-Vis spectrometer, and an absorption spectrum scan is performed within the wavelength range of 200-900 nm. Before each measurement, baseline calibration is performed using a reference sample (barium sulfate) to ensure measurement accuracy. The absorption spectrum data is recorded, such as... Figure 10 As shown.

[0059] (3) LAMSO was measured using a ground object spectrometer: 0.03Eu 2+ 0.07Cr 3+ A light-converting agent is used to obtain a real-time conversion spectrum of sunlight, such as... Figure 11 As shown.

[0060] Example 4 Inorganic green-to-red conversion agent:

[0061] This invention uses CaS:Eu reported in ACS Agricultural Science & Technology, 2021, 1, 55-63. 2+ CaBr2, CaF2 light-converting agent.

[0062] (1) CaS:Eu was tested using a fluorescence spectrometer. 2+ Using CaBr2 and CaF2 as optical converters, select appropriate excitation and monitoring wavelengths, and perform excitation and emission spectral scans within a certain scanning range (e.g., excitation wavelength range of 200-650 nm and emission wavelength range of 550-750 nm) to obtain fluorescence spectral data. Figure 12 As shown.

[0063] (2) CaS:Eu was measured using an ultraviolet-visible spectrometer. 2+ CaBr2, CaF2 light-converting agent: CaS:Eu 2+, CaBr2, CaF2 light conversion agent into the sample cell, made of test samples. The sample was placed in the sample stage of the UV-Vis spectrometer, in the wavelength range of 200-900 nm absorption spectrum scanning. Before each measurement, the baseline correction with reference sample (barium sulfate) to ensure the accuracy of the measurement, record the absorption spectrum data, such as Figure 13 .

[0064] (3) using ground object spectrometer test CaS:Eu 2+ , CaBr2, CaF2 light conversion agent, get real-time sunlight conversion spectrum, such as Figure 14 .

[0065] Example 5 organic purple red light conversion agent:

[0066] The present application selects Eu 3+ (TTA n ) - NZL light conversion agent reported in Chemical Communication, 2014, 50, 13680.

[0067] (1) using fluorescence spectrometer test Eu 3+ (TTA n ) - NZL light conversion agent, select the appropriate excitation and monitoring wavelength, in a certain scanning range (such as excitation wavelength range of 200-550 nm emission wavelength range of 550-750 nm) excitation and emission spectrum scanning, obtain fluorescence spectrum data, such as Figure 15 .

[0068] (2) using UV-Vis spectrometer test Eu 3+ (TTA n ) - NZL light conversion agent: Eu 3+ (TTA n ) - NZL light conversion agent into the sample cell, made of test samples. The sample was placed in the sample stage of the UV-Vis spectrometer, in the wavelength range of 200-900 nm absorption spectrum scanning. Before each measurement, the baseline correction with reference sample (barium sulfate) to ensure the accuracy of the measurement, record the absorption spectrum data, such as Figure 16 .

[0069] (3) using ground object spectrometer test Eu 3+ (TTA n ) - NZL light conversion agent, get real-time sunlight conversion spectrum, such as Figure 17 .

[0070] As Figure 3 , 4 , 5 respectively describes the LAMSO:0.03Eu 2+Fluorescence spectrum, UV-Vis diffuse reflectance spectrum, and real-time solar conversion spectrum. Figure 5 The real-time solar conversion spectrum shows that the light-converting agent absorbs ultraviolet light in the 300-400 nm range after sunlight irradiation, corresponding to... Figure 3 The excitation spectral region and Figure 4 The ultraviolet absorption region of the light-converting agent exhibits a distinct peak at 400-500 nm. This peak is caused by the blue light emitted after the agent absorbs ultraviolet light. Furthermore, this method can prevent spectral distortion of reflectance, such as... Figure 4 The abnormal phenomenon of diffuse reflectance exceeding 100% in the 250-300 nm range is due to the fact that when the sample is excited in the 250-300 nm range, it emits strong photons, resulting in a total number of reflected photons greater than the number of incident photons, and the reflectance exceeding 100%.

[0071] like Figure 6 , 7 8 describes LAMSO: 0.07Cr 3+ Fluorescence spectrum, UV-Vis diffuse reflectance spectrum, and real-time solar conversion spectrum. From Figure 8 LAMSO: 0.07Cr 3+ Three Cr atoms were resolved from the real-time solar conversion spectrum. 3+ Excitation band ( 4 A2→ 4 T1, 4 A2→ 4 T1 and 4 A2→ 4 T2), consistent with the fluorescence spectrum and UV-Vis diffuse reflectance spectrum. The reflectance peak at 675-850 nm is consistent with Cr. 3+ The emission peaks in the fluorescence spectrum correspond to this. In the real-time solar conversion spectrum, the 763 nm wavelength protrusion is influenced by the red component of sunlight.

[0072] like Figure 9 , 10 11 describes LAMSO: 0.03Eu 2+ 0.07Cr 3+ Fluorescence spectrum, UV-Vis diffuse reflectance spectrum, and real-time solar conversion spectrum. Figure 11 LAMSO: 0.03Eu 2+ 0.07Cr 3+ The real-time solar conversion spectrum is in the range of 300-675 nm. The light-converting agent has three absorption peaks, and the peak at 319 nm is relatively high compared to the undoped Eu. 2+ ( Figure 8 The situation is enhanced, corresponding to Eu 2+ of 4 f7→4 f6 5 d1 excitation. Peaks at 300-350 nm, 350-475 nm, and 475-650 nm are respectively associated with Cr. 3+ of 4 A2→ 4 T1, 4 A2→ 4 T1 and 4 A2→ 4 The T2 transition matches the excitation peaks in the fluorescence spectrum and UV-Vis diffuse reflectance spectrum. The reflectance peaks in the 675-850 nm range correspond to Cr. 3+ Photoluminescence emission.

[0073] like Figure 12 , 13 14 describes CaS:Eu 2+ Fluorescence spectra, UV-Vis diffuse reflectance spectra, and real-time solar conversion spectra of CaBr2 and CaF2. Figure 14 CaS:Eu 2+ The real-time solar conversion spectra of CaBr2 and CaF2 are in the ranges of 300-380 nm and 400-625 nm. The converting agents have two absorption peaks, which are consistent with the excitation peak in the fluorescence spectrum and the UV-Vis diffuse reflectance spectrum. The reflection peak at 600-700 nm corresponds to the emission peak in the fluorescence spectrum.

[0074] like Figure 15 , 16 17 describes Eu 3+ (TTA n Fluorescence spectrum, UV-Vis diffuse reflectance spectrum, and real-time solar conversion spectrum of )–NZL. Figure 17 Eu 3+ (TTA n The real-time solar conversion spectrum of )–NZL shows absorption peaks in the 300-550 nm range, consistent with the excitation peaks in the fluorescence spectrum and the UV-Vis diffuse reflectance spectrum. Simultaneously, Eu appears in the 575-750 nm range. 3+ The characteristic peaks correspond to the emission peaks in the fluorescence spectrum. Simultaneously, this method can prevent the UV-Vis diffuse reflectance spectral distortion caused by the sum of emitted and reflected photons exceeding the BaSO4 reference reflected photon value. Figure 16 An unusual phenomenon where the diffuse reflectance spectrum in the 200-250 nm range exceeds 100%.

[0075] Figure 18 The technical process of using a ground-based spectrometer to test the real-time solar conversion spectrum of a light-converting agent is described.

[0076] The present application aims at the limitations of existing light conversion agent detection technologies, and proposes a fast real-time detection method and instrument based on a ground feature spectrometer, effectively solving the problems of spectral distortion, insufficient real-time performance, inaccurate application scene judgment, and poor environmental adaptability, etc. The daylight real-time conversion spectrum detection capability bridges the gap between laboratory characterization and actual deployment, providing a powerful tool for optimizing the research and application of multifunctional light conversion agents.

[0077] The above-mentioned are only application examples of the present application in typical scenarios, and the actual application scenarios of the present application are not limited to these examples. For professionals in the relevant field, without deviating from the core principles of the present application, the application can be extended to other similar scenarios or appropriately adjusted and optimized, and the resulting achievements should also be covered within the protection scope of the present application.

Claims

1. A method for rapid real-time detection of a light conversion agent, characterized in that, It comprises the following steps: Step 1, instrument preparation and calibration: adjust the ground object spectrometer to the appropriate position, so that it can stably receive the sunlight spectrum signal reflected by the earth's surface, and test the reflectance spectrum of the white board; Step 2, record the reflectance, background and dark signal data during the scanning of the white board by dynamically adjusting the measurement parameters, and normalize the test results as the basis for subsequent sample test data correction; Step 3, use standard spectral samples to calibrate the wavelength and intensity of the ground object spectrometer; Step 4, real-time sunlight conversion spectrum test of light conversion agent: replace the standard spectral sample on the sample table of the ground object spectrometer with the light conversion agent sample to test the real-time sunlight conversion spectrum, and test the reflectance spectrum of the light conversion agent to be tested. The ground object spectrometer can directly test the absorption and reflectance spectrum, and obtain the absorption and emission spectrum information of the light conversion agent. The scanning wavelength range of the ground object spectrometer is 300-1100nm; Step 5, according to the real-time sunlight conversion spectrum of the light conversion agent sample, judge its light conversion property and application scene. If the absorption area of the light conversion agent measured by the sunlight conversion spectrum is in the green light area, and / or the ultraviolet light area, and the reflection area is in the red light area, the far red light area, and / or the blue light area, it is determined that the light conversion agent is suitable for agricultural greenhouse film; If the absorption area of the light conversion agent sample measured by the sunlight conversion spectrum is in the ultraviolet light area, and the emission light is in the visible light area, it is determined that the light conversion agent is applied to photovoltaic adhesive film.

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

3. The method for rapid real-time detection of light conversion agent according to claim 1, characterized in that, The reflectance spectrum of the white board in step 1 is specifically: under the same test environment conditions, test the reflectance spectrum of the white board for 3-6 times, take the average value of the test results as the reflectance spectrum data of the white board, and then normalize the data to eliminate the influence of the instrument and environmental conditions.

4. The method for rapid real-time detection of light conversion agent according to claim 1, characterized in that, The real-time sunlight conversion spectrum test of the light conversion agent in step 4 is specifically: under the same test environment conditions, test the reflectance spectrum of the light conversion agent sample for 3-6 times, take the average value of the test results as the reflectance 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 agent according to claim 1, characterized in that, The ground object spectrometer has a high-precision spectral detection module, with a wavelength accuracy better than ±0.5nm and a spectral resolution better than 2nm, and can monitor and dynamically adjust the measurement parameters in real time to adapt to different lighting conditions.

6. The method for rapid real-time detection of light conversion agent according to claim 1, characterized in that, The ground object spectrometer includes a main screen (1), a handle (2), a physical acquisition button (3), a sighting button (4), a power switch (5), a range finder (6), a camera (7), a laser sighting port (8), a field 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.

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