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Grooved surfaces on InPFormation of a textured or grooved front surface on a solar cell can increase the efficiency in several ways, including enhanced absorption and light trapping. In III-IV materials the (111) plane is chemically different form the (1'1'1') plane, and both etching and epitaxial deposition behave differently on these surfaces. The current state of profile etching in InP is summarized. Data are presented on novel geometries attainable as a function of etchant temperature and composition, substrate orientation and carrier concentration, and the oxide thickness between the substrate and the photoresist. Depending on dopant concentration, the same etchant can produce either anisotropic or isotropic grooves. V-grooved solar cells were manufactured on InP, and the improved optical absorption was demonstrated. Preferred parameters for various applications are listed and discussed.
Document ID
19910020894
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bailey, Sheila G.
(NASA Lewis Research Center Cleveland, OH., United States)
Fatemi, Navid S.
(Sverdrup Technology, Inc., Brook Park OH., United States)
Landis, Geoffrey A.
(Sverdrup Technology, Inc., Brook Park OH., United States)
Jenkins, Phillip P.
(Cleveland State Univ. OH., United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1991
Publication Information
Publication: Space Photovoltaic Research and Technology Conference
Subject Category
Energy Production And Conversion
Accession Number
91N30208
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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