標題: Nano-patterned glass superstrates with different aspect ratios for enhanced light harvesting in a-Si:H thin film solar cells
作者: Chen, Ting-Gang
Yu, Peichen
Tsai, Yu-Lin
Shen, Chang-Hong
Shieh, Jia-Min
Tsai, Min-An
Kuo, Hao-Chung
光電工程學系
光電工程研究所
Department of Photonics
Institute of EO Enginerring
公開日期: 7-May-2012
摘要: Nano-patterned glass superstrates obtained via a large-area production approach are desirable for antireflection and light trapping in thin-film solar cells. The tapered nanostructures allow a graded refractive index profile between the glass and material interfaces, leading to suppressed surface reflection and increased forward diffraction of light. In this work, we investigate nanostructured glass patterns with different aspect ratios using scalable nanosphere lithography for hydrogenated amorphous silicon (a-Si:H) thin film solar cells. Compared to flat glass cell and Asahi U-type glass cell, enhancements in short-circuit current density (J(sc)) of 51.6% and 8%, respectively, were achieved for a moderate aspect ratio of 0.16. The measured external quantum efficiencies (EQE) spectra confirmed a broadband enhancement due to antireflection and light trapping properties. (C) 2012 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.20.00A412
http://hdl.handle.net/11536/16315
ISSN: 1094-4087
DOI: 10.1364/OE.20.00A412
期刊: OPTICS EXPRESS
Volume: 20
Issue: 10
起始頁: 0
結束頁: 0
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