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Advanced high efficiency concentrator cells. Final subcontractor report, 1 October 1988--31 March 1990 [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
45 pages : digital, PDF file
Additional Creators:
Varian Associates, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
This report describes research to develop the technology needed to demonstrate a monolithic, multijunction, two-terminal, concentrator solar cell with a terrestrial power conversion efficiency greater than 35%. Under three previous subcontracts, Varian developed many of the aspects of a technology needed to fabricate very high efficiency concentrator cells. The current project was aimed at exploiting the new understanding of high efficiency solar cells. Key results covered in this report are as follows. (1) A 1.93-eV AlGaAs/1.42-eV GaAs metal-interconnected cascade cell was manufactured with a one-sun efficiency at 27.6% at air mass 1.5 (AM1.5) global. (2) A 1.0eV InGaAs cell was fabricated on the ``reverse`` side of a low-doped GaAs substrate with a one-sun efficiency of 2.5% AM1.5 diffuse and a short-circuit current of 14.4 mA/cm². (3) Small-scale manufacturing of GaAs p/n concentrator cells was attempted and obtained an excellent yield of high-efficiency cells. (4) Grown-in tunnel junction cell interconnects that are transparent and thermally stable using C and Si dopants were developed. 10 refs.
Report Numbers:
E 1.99:nrel/tp--451-4855
nrel/tp--451-4855
Subject(s):
Other Subject(s):
Note:
Published through SciTech Connect.
06/01/1992.
"nrel/tp--451-4855"
"DE92010559"
Gale, R.
National Renewable Energy Lab., Golden, CO (United States)
Type of Report and Period Covered Note:
Final; 01/01/1988 - 12/31/1990
Funding Information:
AC02-83CH10093
View MARC record | catkey: 14797005