Absorption enhancement in thin film a-Si solar cells with double-sided SiO2 particle layers

doi:10.1088/1674-1056/24/10/104201

中国物理B ›› 2015, Vol. 24 ›› Issue (10): 104201-104201.doi: 10.1088/1674-1056/24/10/104201

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Absorption enhancement in thin film a-Si solar cells with double-sided SiO₂ particle layers

陈乐^{a b}, 王庆康^a, 沈向前^a, 陈文^b, 黄堃^a, 刘代明^a

a Key Laboratory for Thin Film and Micro-fabrication of the Ministry of Education, Department of Microelectronics and Nanoscience, Shanghai Jiao Tong University, Shanghai 200240, China;
b School of Physical Science and Technology Engineering, Guangxi Colleges and Universities Key Laboratory of Complex System Optimization and Big Data Processing, Yulin Normal University, Yulin 537400, China

收稿日期:2015-01-19 修回日期:2015-05-20 出版日期:2015-10-05 发布日期:2015-10-05
基金资助:
Project supported by the National High-Tech Research and Development Program of China (Grant No. 2011AA050518), the University Research Program of Guangxi Education Department, China (Grant No. LX2014288), and the Natural Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant No. 2013GXNSBA019014).

Absorption enhancement in thin film a-Si solar cells with double-sided SiO₂ particle layers

Chen Le (陈乐)^{a b}, Wang Qing-Kang (王庆康)^a, Shen Xiang-Qian (沈向前)^a, Chen Wen (陈文)^b, Huang Kun (黄堃)^a, Liu Dai-Ming (刘代明)^a

a Key Laboratory for Thin Film and Micro-fabrication of the Ministry of Education, Department of Microelectronics and Nanoscience, Shanghai Jiao Tong University, Shanghai 200240, China;
b School of Physical Science and Technology Engineering, Guangxi Colleges and Universities Key Laboratory of Complex System Optimization and Big Data Processing, Yulin Normal University, Yulin 537400, China

Received:2015-01-19 Revised:2015-05-20 Online:2015-10-05 Published:2015-10-05
Contact: Wang Qing-Kang E-mail:wangqingkang@sjtu.edu.cn
Supported by:
Project supported by the National High-Tech Research and Development Program of China (Grant No. 2011AA050518), the University Research Program of Guangxi Education Department, China (Grant No. LX2014288), and the Natural Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant No. 2013GXNSBA019014).

摘要/Abstract

摘要： Light absorption enhancement is very important for improving the power conversion efficiency of a thin film a-Si solar cell. In this paper, a thin-film a-Si solar cell model with double-sided SiO₂ particle layers is designed, and then the underlying mechanism of absorption enhancement is investigated by finite difference time domain (FDTD) simulation; finally the feasible experimental scheme for preparing the SiO₂ particle layer is discussed. It is found that the top and bottom SiO₂ particle layers play an important role in anti-reflection and light trapping, respectively. The light absorption of the cell with double-sided SiO₂ layers greatly increases in a wavelength range of 300 nm-800 nm, and the ultimate efficiency increases more than 22% compared with that of the flat device. The cell model with double-sided SiO₂ particle layers reported here can be used in varieties of thin film solar cells to further improve their performances.

关键词: thin film a-Si solar cells, light trapping, anti-reflection, SiO₂ particle

Abstract: Light absorption enhancement is very important for improving the power conversion efficiency of a thin film a-Si solar cell. In this paper, a thin-film a-Si solar cell model with double-sided SiO₂ particle layers is designed, and then the underlying mechanism of absorption enhancement is investigated by finite difference time domain (FDTD) simulation; finally the feasible experimental scheme for preparing the SiO₂ particle layer is discussed. It is found that the top and bottom SiO₂ particle layers play an important role in anti-reflection and light trapping, respectively. The light absorption of the cell with double-sided SiO₂ layers greatly increases in a wavelength range of 300 nm-800 nm, and the ultimate efficiency increases more than 22% compared with that of the flat device. The cell model with double-sided SiO₂ particle layers reported here can be used in varieties of thin film solar cells to further improve their performances.

Key words: thin film a-Si solar cells, light trapping, anti-reflection, SiO₂ particle

中图分类号: (Diffraction and scattering)

42.25.Fx

07.60.-j (Optical instruments and equipment) 88.40.jm (Thin film III-V and II-VI based solar cells) 88.40.hm (Cost of production of solar cells)

陈乐, 王庆康, 沈向前, 陈文, 黄堃, 刘代明. Absorption enhancement in thin film a-Si solar cells with double-sided SiO₂ particle layers[J]. 中国物理B, 2015, 24(10): 104201-104201.

Chen Le (陈乐), Wang Qing-Kang (王庆康), Shen Xiang-Qian (沈向前), Chen Wen (陈文), Huang Kun (黄堃), Liu Dai-Ming (刘代明). Absorption enhancement in thin film a-Si solar cells with double-sided SiO₂ particle layers[J]. Chin. Phys. B, 2015, 24(10): 104201-104201.

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Absorption enhancement in thin film a-Si solar cells with double-sided SiO₂ particle layers

Absorption enhancement in thin film a-Si solar cells with double-sided SiO₂ particle layers

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