CN112217474A - Calibration and use method of space triple-junction gallium arsenide working standard solar cell - Google Patents
Calibration and use method of space triple-junction gallium arsenide working standard solar cell Download PDFInfo
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- CN112217474A CN112217474A CN202010960328.3A CN202010960328A CN112217474A CN 112217474 A CN112217474 A CN 112217474A CN 202010960328 A CN202010960328 A CN 202010960328A CN 112217474 A CN112217474 A CN 112217474A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910001218 Gallium arsenide Inorganic materials 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 41
- 238000001228 spectrum Methods 0.000 claims abstract description 22
- 238000005286 illumination Methods 0.000 claims description 22
- 230000003595 spectral effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
- H02S50/15—Testing of PV devices, e.g. of PV modules or single PV cells using optical means, e.g. using electroluminescence
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a method for calibrating and using a space triple-junction gallium arsenide working standard solar cell, which belongs to the technical field of solar cell testing and is characterized by comprising the following steps: calibrating a working standard sub-battery; calibrating a working standard whole battery; using a working standard solar cell; the calibration and use method of the space triple junction gallium arsenide working standard solar cell can complete the calibration of the working standard solar cell and the daily calibration of a solar simulator in engineering, complete the I-V characteristic test of the space triple junction gallium arsenide solar cell in daily production, solve the deviation of test results caused by different mismatch errors of spectra of different simulators and AM0 spectra, enable the performance of the solar cell to be evaluated uniformly, and save the cost for manufacturing the sub-cell.
Description
Technical Field
The invention belongs to the technical field of solar cell testing, and particularly relates to a method for calibrating and using a three-junction gallium arsenide working standard solar cell for space.
Background
In daily production of the space triple junction gallium arsenide solar cell, illumination I-V characteristic test is required, unqualified products are screened, and quality is controlled. The I-V characteristic test, which requires the use of a solar simulator, was performed under standard test conditions: AM0 spectrum with standard radiation intensity of 1353 W.m-2. This requires a light source calibration of the simulator using a working standard battery to meet standard test conditions. The requirement of the existing triple-junction gallium arsenide solar cell on a working standard cell is that sub-cells of the triple-junction cell, namely a top junction sub-cell, a middle junction sub-cell and a bottom junction sub-cell, need to be manufactured and are calibrated to be used as the working standard cell. In the calibration of the working standard battery, after a secondary standard battery calibration simulator is usually used, the I-V characteristic of the working standard battery is tested to obtain the short circuit current (Isc), which is the calibration value of the working standard battery.
No matter the space triple junction gallium arsenide working standard cell is calibrated or used, an A-grade solar simulator is frequently used at present, namely the mismatch error of each spectral band of the solar simulator and the spectrum of AM0 is less than or equal to +/-25%. However, because the a-class solar simulator cannot completely simulate the spectrum of the spatial AM0, and the mismatch error between the spectrum of different simulators and the spectrum of the AM0 is different, in addition, in engineering applications, the quantum efficiency of solar cells of different batches with the same structure and the same process has a certain deviation, which causes that when the I-V characteristics of the solar cells are tested by using different simulators, even if the same working standard cell is used to test the same cell, the test results of different simulators have a deviation, and the performance of the solar cells cannot be uniformly evaluated, so the standard cell used by the calibration light source must have the quantum efficiency as consistent as possible with the tested cell, and the deviation between the test results of different simulators is solved. Or the I-V characteristic test of the solar cell is completed by using the A + grade solar simulator, namely the mismatch error of each spectrum section of the solar simulator and the spectrum of the AM0 is less than or equal to +/-10 percent, and the deviation between the test results caused by different simulators can be solved.
Class a + solar simulators are significantly more costly than class a solar simulators. In the aspect of calibration of working standard cells, secondary standard solar cells are generally produced by qualified institution calibration, the cost is high, and each batch of solar cells have secondary standards with relatively consistent quantum efficiency, which is difficult. Therefore, the A + grade solar simulator can be used for calibrating the working standard solar cell, and the A grade solar simulator can be used for daily production test of the three-junction gallium arsenide solar cell in the space in engineering. In order to solve the problem of test result deviation caused by different simulators and save cost, only the sub-cells of the three-junction cell with the same structure are manufactured without manufacturing every batch, the calibration and use method of the three-junction gallium arsenide working standard solar cell for the space is provided, and the calibration and use method can be used for calibration of the working standard solar cell and daily calibration of a solar simulator in engineering to complete daily production test of the three-junction gallium arsenide solar cell for the space.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a calibration and use method of a three-junction gallium arsenide working standard solar cell for a space, the calibration of the working standard solar cell and the daily calibration of a solar simulator in engineering can be completed by utilizing the calibration and use method of the three-junction gallium arsenide working standard solar cell for the space, the I-V characteristic test of the three-junction gallium arsenide solar cell for the space in daily production is completed, the deviation of the test result caused by different mismatch errors of the spectrum of different simulators and the spectrum AM0 is solved, the performance of the solar cell can be uniformly evaluated, and meanwhile, the cost for manufacturing a sub-cell is saved.
The invention aims to provide a method for calibrating and using a three-junction gallium arsenide working standard solar cell for space, which comprises the following steps:
calibrating the working standard sub-battery: the solar simulator selects an A + grade solar simulator, a second-grade standard top junction sub-battery is placed in an illumination area, and the I-V characteristic of the second-grade standard top junction sub-battery is tested; adjusting the light intensity of the solar simulator according to the actually measured short-circuit current value to enable the deviation between the actually measured short-circuit current and the calibrated current value of the secondary standard top junction sub-battery to be within +/-1%; then, placing the top junction sub-battery to be calibrated at the same position of the illumination area, testing the I-V characteristic of the top junction sub-battery to obtain a short-circuit current, and taking the short-circuit current as a calibration value of the working standard top junction sub-battery; according to the method for calibrating the working standard sub-battery, the calibration of the working standard middle junction sub-battery and the bottom junction sub-battery is completed in sequence;
calibrating the working standard whole battery: the solar simulator adopts an A + grade solar simulator, secondary standard solar cells comprising a top junction sub cell, a middle junction sub cell and a bottom junction sub cell are sequentially placed at the same position of an illumination area, and the I-V characteristics of the secondary standard solar cells are tested; adjusting the spectrum of the solar simulator according to the actually measured short-circuit current value to ensure that the deviation between the actually measured short-circuit current and the calibrated current value of the top junction sub-cell and the middle junction sub-cell is within +/-1 percent, and simultaneously the actually measured short-circuit current of the bottom junction sub-cell is not lower than the calibrated current value; and then placing the whole battery to be calibrated at the same position of the illumination area, testing the I-V characteristic of the whole battery to obtain short-circuit current, and taking the short-circuit current as the calibration value of the whole battery to be calibrated.
Preferably, the spectral mismatch range of the above-mentioned class a + solar simulator is not more than ± 10%.
Preferably, the working standard sub-battery, the working standard whole battery and the secondary standard solar battery have the same structure, the working standard whole battery is derived from the battery to be tested, and the working standard whole battery and the battery to be tested belong to the same batch.
Preferably, the method further comprises the following steps:
using a working standard solar cell: sequentially placing working standard solar cells comprising a top junction sub cell, a middle junction sub cell and a bottom junction sub cell at the same position of an illumination area, and testing the I-V characteristics of the working standard solar cells; adjusting the spectrum of the solar simulator according to the actually measured short-circuit current value to ensure that the deviation between the actually measured short-circuit current and the calibrated current value of the top junction sub-battery and the middle junction sub-battery is within +/-1 percent, and simultaneously the actually measured short-circuit current of the bottom junction standard sub-battery is not lower than the calibrated current value; then, the working standard whole battery is placed at the same position of an illumination area, and the light intensity of the solar simulator is adjusted, so that the deviation between the actually measured short-circuit current and the calibrated current value of the standard whole battery is within +/-1%; after calibration, the solar cell to be tested is placed at the same position of the illumination area, and the I-V characteristic of the solar cell is tested.
Preferably, the battery to be tested, the working standard sub-battery and the working standard whole battery have the same structure, and the battery to be tested and the working standard whole battery belong to the same batch.
Preferably, the battery to be tested is of a lattice matching structure or a forward mismatch structure.
Preferably, in the transfer of the working standard, the use is of a + class solar simulator, in the use of the working standard cell,
the use is of a class a solar simulator,
preferably, the class a + solar simulator and the class a solar simulator are both 3-band tunable solar simulators.
The invention has the advantages and positive effects that:
when the working standard cell is used for daily calibration of the solar simulator in engineering, the working standard sub-cell is used for calibrating the solar simulator, and the working standard whole cell which is in the same batch with the cell to be tested is used for calibrating the simulator, so that the quantum efficiency of the working standard cell and the cell to be tested is consistent as much as possible.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following examples are illustrated, and the following detailed descriptions are given:
the technical scheme of the invention is as follows:
a calibration and use method of a space triple junction gallium arsenide working standard solar cell is disclosed, in order to make clear explanation, the preferred embodiment takes a cell to be tested as a lattice matching structure (LM) as an example; the method specifically comprises the following steps:
and (3) calibrating the working standard sub-battery: the solar simulator adopts an A + grade 3 spectral band adjustable solar simulator with the spectral mismatch degree less than or equal to +/-10%. And placing the secondary standard top junction sub-battery with the LM structure in an illumination area, and testing the I-V characteristic of the secondary standard top junction sub-battery by using a source meter or an electronic load to obtain main electrical performance parameters such as short-circuit current, open-circuit voltage and the like. And repeatedly adjusting the light intensity of the solar simulator according to the actually measured short-circuit current value, and testing the I-V characteristic of the solar simulator until the deviation between the actually measured short-circuit current and the calibrated current value of the top junction sub-battery is within +/-1%. And then placing the top junction sub-battery with the LM structure to be calibrated at the same position of the illumination area, and testing the I-V characteristic of the top junction sub-battery by using a source meter or an electronic load to obtain short-circuit current which is a calibration value of the working standard top junction sub-battery. And according to the same method, sequentially completing the calibration of the working standard middle junction battery and the bottom junction battery of the LM structure.
Calibrating the whole battery in the working standard: the solar simulator still selects the A + level 3 spectrum band adjustable solar simulator, and the secondary standard solar cell with the LM structure, including the top junction sub-cell, the middle junction sub-cell and the bottom junction sub-cell, are sequentially placed at the same position of the illumination area, and the I-V characteristic of the secondary standard solar cell is tested. And repeatedly adjusting the spectrum of the solar simulator according to the actually measured short-circuit current value, and testing the I-V characteristic of the solar simulator until the deviation between the actually measured short-circuit current and the calibrated current value of the top junction sub-cell and the middle junction sub-cell is within +/-1% at the same time, and the actually measured short-circuit current of the bottom junction sub-cell is not lower than the calibrated current value. And then randomly extracting the battery to be tested from the production batch as a working standard whole battery to be calibrated, placing the battery to be tested at the same position of the illumination area, and testing the I-V characteristic of the battery to be tested to obtain the short-circuit current which is the calibration value of the working standard whole battery.
Use of working standard solar cells: and sequentially placing the working standard solar cell with the LM structure, including the top junction sub-cell, the middle junction sub-cell and the bottom junction sub-cell, at the same position of an illumination area of the solar simulator, and testing the I-V characteristic of the working standard solar cell. And repeatedly adjusting the spectrum of the solar simulator according to the actually measured short-circuit current value, and testing the I-V characteristic of the solar simulator until the deviation between the actually measured short-circuit current and the calibrated current value of the top junction and the middle junction sub-battery is within +/-1%, and simultaneously the actually measured short-circuit current of the bottom junction sub-battery is not lower than the calibrated current value. And then, placing the working standard whole battery with the LM structure at the same position of an illumination area, and testing the I-V characteristic of the working standard whole battery. And repeatedly adjusting the light intensity of the solar simulator according to the actually measured short-circuit current value, and testing the I-V characteristic of the solar simulator until the deviation between the actually measured short-circuit current and the calibrated current value of the standard whole battery is within +/-1%, thereby completing the daily calibration of the solar simulator. After calibration, the solar cell to be tested can be placed at the same position of an illumination area to test the I-V characteristic of the solar cell, and daily production test of the three-junction gallium arsenide solar cell for space is completed.
In engineering, the method can use the working standard sub-battery with the same structure and the working standard whole battery calibration simulator with the same batch as the battery to be tested on the premise of not manufacturing sub-batteries of each batch, and effectively reduces the deviation of the test result caused by different mismatch deviations of the spectrums of different simulators and the spectrum of AM 0. In table 1 and table 2, the batteries to be tested are divided into 4 different batches, and table 1 shows the deviation of the batteries of the 4 batches tested by using the same working standard subcell in different simulators; table 2 shows the method according to the embodiment, 4 batches are divided, each batch is randomly selected to calibrate the whole working standard battery, and then the deviation of the 4 batches of batteries is tested in different simulators using the same working standard sub-battery and whole battery (the batches of the working standard whole battery and the battery to be tested correspond).
TABLE 1 standard working cell as a subcell
| Isc bias (%) | Voc deviation (V) | Pmax deviation (%) | Ip bias (%) | |
| Batch 1 | -0.69 | -0.0039 | -0.08 | -0.13 |
| Batch 2 | -2.00 | -0.0037 | -1.22 | -1.43 |
| Batch 3 | -2.50 | -0.0034 | -1.40 | -1.68 |
| Batch 4 | -0.14 | -0.0033 | -0.16 | -0.1 |
TABLE 2 working standard cells as subcells and whole cells
As can be seen from tables 1 and 2,
1. for the subcell as the working standard, the deviation of the different simulator test lots 1 and 4 was small and within ± 1%, while for the subcell and the whole cell as the working standard, the deviation of the different simulator test lots 1 and 4 was not increased and still within ± 1%;
2. for the subcell as the working standard, the deviation of the different simulator test batches 2 and 3 is larger, exceeding + -1%, while the deviation of the different simulator test batches 2 and 3 is greatly reduced by using the subcell and the whole cell as the working standard;
in conclusion, the calibration and use method for the space triple-junction gallium arsenide working standard solar cell provided by the patent can effectively solve the deviation of the test result caused by different mismatch deviations of the spectrums of different simulators and the spectrum of AM0, and simultaneously save the cost for manufacturing the sub-cell.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. A calibration and use method of a three-junction gallium arsenide working standard solar cell for space is characterized by comprising the following steps:
calibrating the working standard sub-battery: the solar simulator selects an A + grade solar simulator, a second-grade standard top junction sub-battery is placed in an illumination area, and the I-V characteristic of the second-grade standard top junction sub-battery is tested; adjusting the light intensity of the solar simulator according to the actually measured short-circuit current value to enable the deviation between the actually measured short-circuit current and the calibrated current value of the secondary standard top junction sub-battery to be within +/-1%; then, placing the top junction sub-battery to be calibrated at the same position of the illumination area, testing the I-V characteristic of the top junction sub-battery to obtain a short-circuit current, and taking the short-circuit current as a calibration value of the working standard top junction sub-battery; according to the method for calibrating the working standard sub-battery, the calibration of the working standard middle junction sub-battery and the bottom junction sub-battery is completed in sequence;
calibrating the working standard whole battery: the solar simulator adopts an A + grade solar simulator, secondary standard solar cells comprising a top junction sub cell, a middle junction sub cell and a bottom junction sub cell are sequentially placed at the same position of an illumination area, and the I-V characteristics of the secondary standard solar cells are tested; adjusting the spectrum of the solar simulator according to the actually measured short-circuit current value to ensure that the deviation between the actually measured short-circuit current and the calibrated current value of the top junction sub-cell and the middle junction sub-cell is within +/-1 percent, and simultaneously the actually measured short-circuit current of the bottom junction sub-cell is not lower than the calibrated current value; and then placing the whole battery to be calibrated at the same position of the illumination area, testing the I-V characteristic of the whole battery to obtain short-circuit current, and taking the short-circuit current as the calibration value of the whole battery to be calibrated.
2. The method of claim 1, wherein the spectral mismatch range of the class a + solar simulator is no greater than ± 10%.
3. The method for calibrating and using the space triple junction gallium arsenide working standard solar cell according to claim 1 or 2, wherein the working standard sub-cell, the working standard whole cell and the secondary standard solar cell have the same structure, and the working standard whole cell is derived from the cell to be tested, and the working standard whole cell and the cell to be tested belong to the same batch.
4. The method for calibrating and using a standard solar cell for space triple junction gallium arsenide as claimed in claim 3, further comprising:
using a working standard solar cell: sequentially placing working standard solar cells comprising a top junction sub cell, a middle junction sub cell and a bottom junction sub cell at the same position of an illumination area, and testing the I-V characteristics of the working standard solar cells; adjusting the spectrum of the solar simulator according to the actually measured short-circuit current value to ensure that the deviation between the actually measured short-circuit current and the calibrated current value of the top junction sub-battery and the middle junction sub-battery is within +/-1 percent, and simultaneously the actually measured short-circuit current of the bottom junction standard sub-battery is not lower than the calibrated current value; then, the working standard whole battery is placed at the same position of an illumination area, and the light intensity of the solar simulator is adjusted, so that the deviation between the actually measured short-circuit current and the calibrated current value of the standard whole battery is within +/-1%; after calibration, the solar cell to be tested is placed at the same position of the illumination area, and the I-V characteristic of the solar cell is tested.
5. The method for calibrating and using the space triple junction gallium arsenide working standard solar cell as claimed in claim 1, wherein the battery to be tested and the working standard sub-battery are of the same structure as the working standard whole battery, and the battery to be tested and the working standard whole battery belong to the same batch.
6. The method for calibrating and using a standard solar cell for space triple junction gallium arsenide as claimed in claim 5, wherein the cell to be tested is lattice matched structure or forward mismatched structure.
7. The method for calibrating and using the space triple junction gallium arsenide working standard solar cell as claimed in claim 1, wherein an a + grade solar simulator is used in the transmission of the working standard, and an a grade solar simulator is used in the use of the working standard cell.
8. The method for calibrating and using a space-specific triple junction gallium arsenide standard solar cell as claimed in claim 7, wherein said class A + solar simulator and class A solar simulator are 3 band tunable solar simulators.
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Effective date of registration: 20221008 Address after: 300384 No. 6 Huake No. 7 Road, Binhai New Area, Tianjin Binhai High-tech Industrial Development Zone Applicant after: CETC Energy Co.,Ltd. Address before: 300384 No. 6 Huake No. 7 Road, Binhai New Area, Tianjin Binhai High-tech Industrial Development Zone Applicant before: The 18th Research Institute of China Electronics Technology Group Corporation Applicant before: CETC Energy Co.,Ltd. |
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Address after: 300384 No. 6 Huake No. 7 Road, Binhai New Area, Tianjin Binhai High-tech Industrial Development Zone Applicant after: CETC Blue Sky Technology Co.,Ltd. Address before: 300384 No. 6 Huake No. 7 Road, Binhai New Area, Tianjin Binhai High-tech Industrial Development Zone Applicant before: CETC Energy Co.,Ltd. |
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