Three-Terminal Amorphous Silicon Solar Cells

Author:

Tai Cheng-Hung1,Lin Chu-Hsuan1ORCID,Wang Chih-Ming1,Lin Chun-Chieh2

Affiliation:

1. Institute of Opto-Electronic Engineering, National Dong Hwa University, Shoufeng, Hualien 97401, Taiwan

2. Department of Electrical Engineering, National Dong Hwa University, Shoufeng, Hualien 97401, Taiwan

Abstract

Many defects exist within amorphous silicon since it is not crystalline. This provides recombination centers, thus reducing the efficiency of a typical a-Si solar cell. A new structure is presented in this paper: a three-terminal a-Si solar cell. The new back-to-back p-i-n/n-i-p structure increased the average electric field in a solar cell. A typical a-Si p-i-n solar cell was also simulated for comparison using the same thickness and material parameters. The 0.28 μm-thick three-terminal a-Si solar cell achieved an efficiency of 11.4%, while the efficiency of a typical a-Si p-i-n solar cell was 9.0%. Furthermore, an efficiency of 11.7% was achieved by thickness optimization of the three-terminal solar cell.

Funder

National Science Council

Publisher

Hindawi Limited

Subject

General Materials Science,Renewable Energy, Sustainability and the Environment,Atomic and Molecular Physics, and Optics,General Chemistry

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