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Development of a new low cost antireflective coating technique for solar cellsThe goal of this study was the development of an antireflective (AR) coating technique that has the potential for high throughput and low cost yet is capable of producing films of good optical quality. Previous efforts to develop sprayed AR coatings had utilized titanium isopropoxide mixed with volatile solvents. These films worked well on smooth surfaces but when applied to etched semi-crystalline silicon surfaces yielded inconsistent results with more than 20 percent of the AM1 incident light being reflected. In this program titanium isopropoxide was sprayed directly onto heater wafers (410 C) to produce a uniform AR coating even on highly textured surfaces. Tests on various types of solar cells yielded performance improvements for the hot sprayed AR cells that are equivalent to that observed for evaporated TiOx AR coated cells. As an extension of this effort a new double layer AR consisting of a bottom layer of hot sprayed titanium isopropoxide and a top layer of hot sprayed aluminum isopropoxide in methylene chloride has resulted in more than 10 percent improvement in cell output as compared to a single layer AR cell.
Document ID
19840040279
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wohlgemuth, J. H.
(Solarex Corp. Rockville, MD, United States)
Warfield, D. B.
(Solarex Corp. Rockville, MD, United States)
Johnson, G. A.
(Solarex Corp. Rockville, MD, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1982
Subject Category
Energy Production And Conversion
Accession Number
84A23066
Funding Number(s)
CONTRACT_GRANT: JPL-955902
Distribution Limits
Public
Copyright
Other

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