GaAs/silicon mechanically stacked, multijunction solar cell

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5064093

Gee, J M; Loo, R Y; Kamath, G S; Knechtli, R C

A GaAs/silicon mechanically stacked, multijunction solar cell has been experimentally and theoretically investigated. Theoretical calculations predict efficiencies over 30% for this cell and indicate that the penalty for using a non-optimal combination of bandgaps is small when the cells are operated independently. Preliminary experiments achieved 24.7% at 70X. A detailed analysis of the experimental results allowed estimation of the various loss mechanisms in the stack and projection of the performance of an optimized stacked cell. An optimized GaAs/silicon MSMJ cell should be able to achieve efficiencies near 30% under concentration.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA); Hughes Research Labs., Malibu, CA (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5064093
• Report Number(s): SAND-85-1205C; CONF-851043-9; ON: DE86002119
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
CASCADE SOLAR CELLS
CONCENTRATOR SOLAR CELLS
DIRECT ENERGY CONVERTERS
EFFICIENCY
EQUIPMENT
GALLIUM ARSENIDE SOLAR CELLS
MATHEMATICAL MODELS
OPTIMIZATION
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT
SPECTRAL RESPONSE
TESTING