Materials 2013, 6(1), 291-298; doi:10.3390/ma6010291
Article

Single Grain Boundary Modeling and Design of Microcrystalline Si Solar Cells

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Received: 23 October 2012; in revised form: 26 December 2012 / Accepted: 15 January 2013 / Published: 21 January 2013
(This article belongs to the Special Issue Photovoltaic Materials)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: For photovoltaic applications, microcrystalline silicon has a lot of advantages, such as the ability to absorb the near-infrared part of the solar spectrum. However, there are many dangling bonds at the grain boundary in microcrystalline Si. These dangling bonds would lead to the recombination of photo-generated carriers and decrease the conversion efficiency. Therefore, we included the grain boundary in the numerical study in order to simulate a microcrystalline Si solar cell accurately, designing new three-terminal microcrystalline Si solar cells. The 3-μm-thick three-terminal cell achieved a conversion efficiency of 10.8%, while the efficiency of a typical two-terminal cell is 9.7%. The three-terminal structure increased the JSC but decreased the VOC, and such phenomena are discussed. High-efficiency and low-cost Si-based thin film solar cells can now be designed based on the information provided in this paper.
Keywords: microcrystalline silicon; grain boundary; three-terminal cell
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MDPI and ACS Style

Lin, C.-H.; Hsu, W.-T.; Tai, C.-H. Single Grain Boundary Modeling and Design of Microcrystalline Si Solar Cells. Materials 2013, 6, 291-298.

AMA Style

Lin C-H, Hsu W-T, Tai C-H. Single Grain Boundary Modeling and Design of Microcrystalline Si Solar Cells. Materials. 2013; 6(1):291-298.

Chicago/Turabian Style

Lin, Chu-Hsuan; Hsu, Wen-Tzu; Tai, Cheng-Hung. 2013. "Single Grain Boundary Modeling and Design of Microcrystalline Si Solar Cells." Materials 6, no. 1: 291-298.

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