Semiconductor Optoelectronics, Volume. 41, Issue 4, 494(2020)
Influence of Local High Radiation on Shortcircuit Current of Multijunction Solar Cell under Fresnel Lens
In order to explore the influence of local high radiation on short-circuit current of multijunction solar cell in concentrated photovoltaic module with Fresnel lens as the concentrator, the diameters of the high bright spot of Fresnel lens were measured so as to measure the shortcircuit current of the GaInP/GaInAs/Ge triplejunction solar cell with different sizes of lens under different local illumination areas. And the experimental results were analyzed by using circuit network model. The results show that the shortcircuit current is independent of the area of bright spot, and the current along the optical axis changes synchronously with radiation when the small size Fresnel lens is focused. When the size of lens increases to a certain extent, high radiation presents inthe center of solar cell, and the current is limited by peak tunneling current, which is reflected as the decrease of shortcircuit current at the focal plane. Putting the solar cell on both sides of the focal plane canalleviatethe local high radiation, and the shortcircuit current can be increased by 8.0%.
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JIANG Jingxiang, SHU Bifen, LIANG Qibing, HUANG Yan, CUI Gaojun, YU Zukang. Influence of Local High Radiation on Shortcircuit Current of Multijunction Solar Cell under Fresnel Lens[J]. Semiconductor Optoelectronics, 2020, 41(4): 494
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Received: Mar. 15, 2020
Accepted: --
Published Online: Aug. 18, 2020
The Author Email: Bifen SHU (shubifen@163.com)