27. 5-percent silicon concentrator solar cells

Journal Article · Wed Oct 01 04:00:00 EDT 1986 · IEEE Electron Device Lett.; (United States)

DOI:https://doi.org/10.1109/EDL.1986.26476· OSTI ID:6983906

Sinton, R A; Kwark, Y; Gan, J Y; Swanson, R M

Recent advances in silicon solar cells using the backside point-contact configuration have been extended resulting in 27.5-percent efficiencies at 10 W/sq cm (100 suns, 24 C), making these the most efficient solar cells reported to date. The one-sun efficiencies under an AM1.5 spectrum normalized to 100 mW/sq cm are 22 percent at 24 C based on the design area of the concentrator cell. The improvements reported here are largely due to the incorportation of optical light trapping to enhance the absorption of weakly absorbed near bandgap light. These results approach the projected efficiencies for a mature technology which are 23-24 percent at one sun and 29 percent in the 100-350-sun (10-35 W/sq cm) range. 10 references.

• Research Organization: Stanford Univ., CA
• OSTI ID: 6983906
• Journal Information: IEEE Electron Device Lett.; (United States), Journal Name: IEEE Electron Device Lett.; (United States) Vol. EDL-7; ISSN EDLED
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
ANTIREFLECTION COATINGS
ARSENIC COMPOUNDS
ARSENIDES
COATINGS
CONCENTRATOR SOLAR CELLS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIRECT ENERGY CONVERTERS
EFFICIENCY
EQUIPMENT
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PNICTIDES
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT