CN-122003084-A - Pretreatment method and device for detecting photovoltaic performance of perovskite solar cell

Abstract

The invention relates to a pretreatment method and device for detecting the photovoltaic performance of a perovskite solar cell. A pretreatment method for detecting the photovoltaic performance of a perovskite solar cell comprises the following steps of exciting the perovskite solar cell to a steady state, wherein the excitation method is at least one of infrared light irradiation, heating and voltage application. According to the pretreatment method, the perovskite solar cell is enabled to reach a steady state from a metastable state in a very short time by carrying out infrared light irradiation, heating, voltage application and other methods on the perovskite solar cell, so that the time for detecting the photovoltaic performance (such as I-V test and MPPT test) of the perovskite solar cell is shortened, the detection accuracy is ensured, the detection time is shortened to be below 5min, particularly the detection time can be shortened to be below 1min through infrared light irradiation treatment, the detection efficiency of the perovskite solar cell in large-scale industrial production is greatly saved, and the accuracy is improved.

Inventors

• Request for anonymity
• HU XIANGLI
• WANG SHIHAO
• LI YUJUAN

Assignees

• 广东脉络能源科技有限公司

Dates

Publication Date

20260508

Application Date

20241029

Claims (10)

1. 1. The pretreatment method for detecting the photovoltaic performance of the perovskite solar cell is characterized by comprising the following steps of: Exciting, namely exciting the perovskite solar cell to a steady state; The excitation method is at least one of infrared light irradiation, heating and voltage application.
2. 2. The pretreatment method for detecting photovoltaic performance of perovskite solar cell according to claim 1, wherein the excitation time is 8min or less.
3. 3. The pretreatment method for detecting the photovoltaic performance of the perovskite solar cell according to claim 1, wherein the condition of infrared light irradiation is that the wavelength of infrared light is 0.5-4.5 μm.
4. 4. The pretreatment method for detecting the photovoltaic performance of a perovskite solar cell according to claim 3, wherein the irradiation time of infrared light is less than or equal to 5min.
5. 5. The pretreatment method for detecting the photovoltaic performance of a perovskite solar cell according to claim 4, wherein the irradiation time of infrared light is less than or equal to 3min.
6. 6. The pretreatment method for detecting the photovoltaic performance of the perovskite solar cell according to claim 1, wherein the heating condition is that the heating is carried out at 70-120 ℃ for 1-8 min.
7. 7. The pretreatment method for detecting the photovoltaic performance of the perovskite solar cell according to claim 1 is characterized in that the specific method for applying the voltage is that the voltage of (1.1-1.2) multiplied by N volts is applied to the perovskite solar cell, the voltage time is kept to be less than or equal to 5 minutes after the voltage of the perovskite solar cell is stable, and N is the number of nodes of the perovskite solar cell and is more than or equal to 1.
8. 8. The pretreatment device for detecting the photovoltaic performance of the perovskite solar cell is characterized by comprising a shell, an exciter and a power supply, wherein the exciter is arranged in the shell and is an infrared lamp, a heater or a voltage applicator.
9. 9. The pretreatment device for detecting the photovoltaic performance of a perovskite solar cell of claim 8, wherein the exciter is an infrared lamp disposed at a top end of the interior of the housing.
10. 10. Use of a pretreatment device for detecting the photovoltaic properties of a perovskite solar cell according to claim 8 for the production of a power generation device and/or for the production of an energy storage device and/or for the production of an electrical device.

Description

Pretreatment method and device for detecting photovoltaic performance of perovskite solar cell Technical Field The invention relates to the technical field of solar cells, in particular to a pretreatment method and device for detecting the photovoltaic performance of a perovskite solar cell. Background The steady-state efficiency of a perovskite battery refers to the efficiency obtained under steady conditions of continuous operation, and can counteract charge accumulation due to hysteresis effects, closer to the actual operating efficiency. Therefore, steady state efficiency is recognized in the perovskite solar cell field as the actual efficiency of the cell/component. However, no special detection device for the characteristics of the perovskite solar cell exists at present, and the conventional device for testing the performances of the crystalline silicon cell and the components thereof is still used for detecting the characteristics of the perovskite solar cell. The mode of testing the characteristic curves of the crystalline silicon battery and the component IV thereof is to use a sunlight transient simulator and a fast scanning type electronic load to detect under a standard test environment (25 ℃,1000W/m 2, AM1.5G), and the scanning time of the whole section IV characteristic curve is not more than 100ms. However, the perovskite solar cell has the problems of ion migration, hysteresis effect, slow photoelectric response and the like, so that a steady-state simulator is required to be used when testing an IV characteristic curve of the perovskite solar cell device, and light infiltration is required to be carried out firstly under simulated sunlight in the testing process to enable the perovskite solar cell device to reach a steady state from a metastable state so as to reduce frank defects, interface non-radiation composite defects and the like, but the process is required to consume tens of minutes, and is not beneficial to rapid detection and accurate assessment of the photovoltaic performance of the perovskite solar cell in large-scale industrial production. Therefore, there is a need to develop a method capable of improving the detection speed of the photovoltaic performance of perovskite solar cells. Disclosure of Invention Based on the above, it is necessary to provide a pretreatment method and device for detecting the photovoltaic performance of a perovskite solar cell, aiming at the problems of long detection time and low efficiency of the traditional photovoltaic performance detection method. A pretreatment method for detecting the photovoltaic performance of a perovskite solar cell comprises the following steps of exciting the perovskite solar cell to a steady state, wherein the excitation method is at least one of infrared light irradiation, heating and voltage application. According to the pretreatment method for detecting the photovoltaic performance of the perovskite solar cell, the perovskite solar cell is enabled to reach a steady state from a metastable state in a very short time by carrying out infrared light irradiation, heating, voltage application and other methods on the perovskite solar cell, so that the detection (such as I-V test and MPPT test) time for detecting the photovoltaic performance of the perovskite solar cell is shortened, the detection accuracy is ensured, the detection time is shortened to be below 5min, particularly the detection time is shortened to be below 1min after infrared light irradiation treatment, the detection efficiency of the perovskite solar cell in large-scale industrial production is greatly saved, and the accuracy is improved. In the research, the infrared irradiation can improve the lattice structure and ion distribution of the material, so that the battery is quickly excited to a steady state, the proper heat treatment can passivate perovskite defects, reduce the internal stress of the perovskite material, and quickly excite the battery to the steady state, and by applying small current or voltage at two ends of the battery, the ion redistribution in the perovskite material can be helped, the intrinsic characteristics of the perovskite material can be restored, and meanwhile, the battery can reach a steady working state, and the test accuracy can be improved. Under initial illumination conditions, the electrons absorb light energy, and transition from a ground state to a state of high energy level, referred to as an excited state. In the excited state, electrons have a high energy and some physicochemical processes, such as electron transitions, energy transfer, separation of electron-hole pairs, etc., which are not possible in the ground state, can be performed. Electrons and holes in the excited state are separated and transported to the corresponding electrodes, generating a current. After the illumination is continued, the output parameters (such as current, voltage, etc.) of the photovoltaic device gradually reach a stable value, i.e.,