Title :
Concentrator efficiencies of 29.2% for a GaAs cell and 24.8% for a mounted cell-lens assembly
Author :
Kaminar, N.R. ; Liu, D.D. ; MacMillan, H.F. ; Partain, L.D. ; Ristow, M. Ladle ; Virshup, G.F. ; Gee, J.M.
Author_Institution :
Varian Res. Center, Palo Alto, CA, USA
Abstract :
A lens/cell efficiency of 24.8% has been obtained in an outdoor test using a single GaAs cell and a Fresnel lens. This is the highest efficiency ever reported for a lens/cell assembly. During the test, the cell was water-cooled to a junction temperature of 45 degrees C and the concentration ratio was 205:1. In a related test, a 29.2% cell efficiency was obtained using a GaAs concentrator cell and an Entech prismatic cover glass designed to reduce the effect of shadowing of the grid lines.
Keywords :
III-V semiconductors; gallium arsenide; lenses; solar cells; solar energy concentrators; 24.8 percent; 29.2 percent; Entech prismatic cover glass; Fresnel lens; GaAs cell; junction temperature; mounted cell-lens assembly; semiconductor; shadowing effect reduction; water-cooled; Assembly; Ceramics; Costs; Gallium arsenide; Glass; Laboratories; Lead; Lenses; Shadow mapping; Temperature; Testing;
Conference_Titel :
Photovoltaic Specialists Conference, 1988., Conference Record of the Twentieth IEEE
Conference_Location :
Las Vegas, NV, USA
DOI :
10.1109/PVSC.1988.105806
