Open AccessThree-Terminal Amorphous Silicon Solar Cells
Author(s) -
Cheng-Hung Tai,
Chu-Hsuan Lin,
ChihMing Wang,
Chun-Chieh Lin
Publication year - 2011
Publication title -
international journal of photoenergy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.426
H-Index - 51
eISSN - 1687-529X
pISSN - 1110-662X
DOI - 10.1155/2011/813093
Subject(s) - solar cell , amorphous silicon , materials science , solar cell efficiency , silicon , silicon solar cell , terminal (telecommunication) , amorphous solid , energy conversion efficiency , crystalline silicon , monocrystalline silicon , polymer solar cell , optoelectronics , crystallography , chemistry , computer science , telecommunications
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
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