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Advanced photovoltaic concentrator cells. Quarterly technical progress report No. 2, 1 December 1979-29 February 1980 [electronic resource]

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Bibliographic Details
Online Access:	Online Access
Format:	Government Document Electronic eBook
Language:	English
Published:	Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1980.
Subjects:	Aluminium Arsenides. Deposition. Pnictides. Direct Energy Converters. Performance. Equipment. Solar Equipment. Graded Band Gaps. Physical Properties. Electrical Equipment. Concentrator Solar Cells. Solar Cells. Arsenides. Electrical Properties. Gallium Compounds. Fabrication. Chemical Coating. Gallium Arsenides. Antimony Compounds. Chemical Vapor Deposition. Aluminium Compounds. Surface Coating. Photoelectric Cells. Gallium Arsenide Solar Cells. Joining. Electric Contacts. Bonding. Epitaxy. Arsenic Compounds. Photovoltaic Cells. Substrates. Spectral Response. Materials Science. Solar Energy.

Description
Abstract:	This report describes second quarter activities for a project aimed at demonstrating the technical feasibility of advanced high efficiency concentrator solar converters. The goal of the program is to achieve 30% conversion efficiency with a converter operating at 30°C under 500 to 1000 SUN AM2 illumination and 25% conversion efficiency with a converter operating at 150°C under 500 to 1000 SUN AM2 illumination. The approach is to fabricate two cell, non-lattice matched, monolithic stacked converters using optimum pairs of cells having bandgaps in the range of 1.6 to 1.7 eV and 0.95 to 1.1 eV. The high bandgap cells are to be fabricated using MOCVD or LPE to produce the needed AlGaAs layers of optimized composition, thickness and doping to produce high performance, heteroface homojunction devices. The low bandgap cells are to be similarly fabricated from AlGaSb(As) compositions by LPE. These subcells are then to be joined into a monolithic structure by an appropriate thermal bonding technique which will also form the needed transparent intercell ohmic contact (IOC) between the two subcells. The activities this quarter have been largely focused on the development and study of low bandgap cell structures and attempts to develop suitable techniques for the thermal bonding operation.
Item Description:	Published through SciTech Connect. 01/01/1980. "dse-4042-t40" Zehr, S.W.; Yang, H.T.; Yang, J.J.; Harris, J.S. Jr. Rockwell International Corp., Thousand Oaks, CA (USA). Science Center. Rockwell International Corp., Anaheim, CA (USA). Electronics Research Div.
Physical Description:	Pages: 31 : digital, PDF file.