Concentrator tandem solar cells based on AlGaAs/GaAs-InP/InGaAs (or GaSb) structures

Conference · Fri Dec 30 23:00:00 EST 1994

OSTI ID:191108

Andreev, V M; Karlina, L B; Kazantsev, A B; Khvostikov, V P; Rumyantsev, V D; Sorokina, S V; Shvarts, M Z ^[1]

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1. Russian Academy of Sciences, St. Petersburg (Russian Federation). A.F. Ioffe Physico-Technical Inst.

The authors have developed high-efficiency IR-transparent AlGaAs/GaAs top cells as well as InP/InGaAs and GaSb bottom cells for mechanically stacked tandem solar cells designed for space application. AlGaAs/GaAs and InP/InGaAs structures are prepared by liquid phase epitaxy, GaSb structures--by Zn-diffusion process. The highest top cell efficiency is 23.8% (AM0, 100 suns, 25 C). The infrared-sensitive InP/InGaAs cell efficiency measured under a GaAs IR-filter is 5.9%. The maximum GaSb cell efficiency under GaAs-filter is 5.1%. Mechanically stacked four-terminal tandem solar cells have been fabricated and tested as well. The reached efficiency of an AlGaAs/GaAs-InP/InGaAs tandem cell is 28.2% (AM0, 70 suns, 25 C).

• OSTI ID: 191108
• Report Number(s): CONF-941203--; ISBN 0-7803-1459-X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
ALUMINIUM ARSENIDE SOLAR CELLS
CHROMIUM
CONCENTRATOR SOLAR CELLS
CURRENT DENSITY
DESIGN
DOPED MATERIALS
EFFICIENCY
ELECTRIC POTENTIAL
FILL FACTORS
GALLIUM ANTIMONIDES
GALLIUM ARSENIDE SOLAR CELLS
GERMANIUM
GOLD
INDIUM ARSENIDES
INDIUM PHOSPHIDE SOLAR CELLS
LIQUID PHASE EPITAXY
MAGNESIUM
MANGANESE
NICKEL
RAMAN SPECTROSCOPY
SPECTRAL RESPONSE
ZINC