High-efficiency Grid-type Si Solar Cell Structure

Title
High-efficiency Grid-type Si Solar Cell Structure
Authors
변석주변석용이장교이택성김원목조규만신동우탁성주김동환
Keywords
Ray tracing; Si photovoltaic cells; Texture; Optical design; Grid-type; Reflector
Issue Date
2012-06
Publisher
Journal of the Korean Physical Society
Citation
VOL 60, NO 12, 2075-2078
Abstract
The demand to reduce Si usage in Si photovoltaic cells in order to improve the cost-effectiveness is ever-increasing in photovoltaic industry. In this study, we propose a new Si photovoltaic cell structure, in which Si grids are formed and reflectors are positioned in between. The optical absorption efficiency of the proposed cell structure was analyzed by making comparisons with simple Si cells with flat and textured surfaces. A quantitative analysis of the optical absorption was made by using a direct absorption calculation algorithm based on the three-dimensional modeling and ray-tracing technique. The proposed grid-type cell structure was shown to be able to yield an improvement in the absorption efficiency per unit Si volume as high as 91% when compared to typical Si cells with pyramidal surface texturing.
URI
http://pubs.kist.re.kr/handle/201004/42705
ISSN
03744884
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KIST Publication > Article
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