Materials Reports  2019, Vol. 33 Issue (Z2): 28-31 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Simulated Simulation of Heterojunction Solar Cells and the Effect ofInterface State Density on Efficiency |
| ZHOU Lixiang, HUANG Shihua, WU Fengmin
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| Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University,Jinhua 321004 |
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Abstract Alarge number of literatures have reported the influence of the parameters of each layer of amorphous silicon/crystalline silicon heterojunction battery on the battery, such as thickness, doping concentration, etc., but did not further give the work function of the transparent conductive oxide film TCO to the battery or the impact and how to choose the right TCO. And there are few reports on how interface state density affects heterojunction solar cells. Through this study, it showed that for heterojunction cells with n-type single crystal silicon wafer as the substrate, the larger the TCO work function of the emission field is, the better, the best range is 5.4—6.3 eV. The smaller the TCO work function for the back field, the better. The best range is 3.6—4.0 eV. In addition, studies have shown that, compared with the interface state of the back surface and amorphous silicon (Dit2),the interface state of the front surface of the amorphous silicon/crystalline silicon heterojunction cell (HIT cell) of the n-type substrate with amorphous silicon (Dit1) has a major influence on the performance of battery, and in the Dit1 and Dit2 states, compared with the class donor state, the class acceptor state has a major influence on the battery efficiency.
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Published: 25 November 2019
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| Fund:This work was supported by the National Natural Science Foundation of Zhejiang Province (LY17F040001),Open Project of Surface Physics Laboratory (State Key Laboratory) of Fudan University (KF2015_02), Open Project of National Laboratory of Infrared Physics of Chinese Academy of Sciences (M201503). |
About author:: Lixiang Zhou, male, Hefei, Anhui, a student in Zhejiang Normal University, master, research on silicon-based solar cells
Shihua Huang, Zhejiang Normal University, professor, doctor, mainly engaged in the research of high efficiency crystal silicon solar cells. |
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