NDLI: Large area imprinted surface textures for omnidirectional conformal AR coatings on flexible amorphous silicon solar cells

Content Provider	IEEE Xplore Digital Library
Author	Chadha, A.S. Cline, E.D. Meng Tao Weidong Zhou
Copyright Year	2012
Description	Author affiliation: ZT Solar Inc, Dallas, TX 75235, USA (Cline, E.D.) \|\| School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, 85287, USA (Meng Tao) \|\| NanoFAB Center, Department of Electrical Engineering, University of Texas at Arlington, 76019, USA (Chadha, A.S.; Weidong Zhou)
Abstract	Inverted pyramid surface textures are demonstrated on flexible amorphous Si solar cells based on a resin imprint process. The surface texture reduces the reflectivity of the cells over a broad spectrum. The texture leads to relative cell efficiency increases from 7% at 0° (surface-normal incident) to as high as 22% at 60°. Larger efficiency improvement at higher incident angles is a result of the broad spectrum omni-directional suppression in reflection. The current-voltage characteristics show that the open circuit voltage remains almost constant but the surface texture increases the short circuit current in the amorphous Si solar cell. This suggests that the efficiency improvement is primarily due to improved coupling of light into the cell. This omnidirectional surface texture is a promising method for anti-reflection in all kinds of cells-crystalline Si, amorphous Si, thin films, and organic solar cells.
Starting Page	000327
Ending Page	000330
File Size	1055388
Page Count	4
File Format	PDF
ISBN	9781467300643
ISSN	01608371
e-ISBN	9781467300667
DOI	10.1109/PVSC.2012.6317628
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photovoltaic cells Resins Silicon Surface texture Coatings Reflection Surface treatment surface texturing amorphous silicon flexible solar cell inverted pyramid large area omnidirectional
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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