e-Article
High efficiency Al/sub 0.32/Ga/sub 0.68/As-GaAs tandem solar cells with three terminals
Document Type
Conference
Author
Source
Conference Record of the Twentieth IEEE Photovoltaic Specialists Conference Photovoltaic Specialists Conference, 1988., Conference Record of the Twentieth IEEE. :597-601 vol.1 1988
Subject
Language
Abstract
The authors describe a particular three-terminal tandem solar cell without grid in the illuminated area. This device is narrow and linear and is designed to operate with linear concentrators under a moderate sunlight concentration. The bottom cell is a p-n GaAs junction; the top cell is a p-n Al/sub 0.32/Ga/sub 0.68/As junction. They were realized by LPE (liquid-phase epitaxy) and isothermal LPE techniques. By the judicious choice of the aluminum content of the AlGaAs layer, a power conversion efficiency of 25.1% was obtained under the terrestrial conditions of 10 AM1.5, 25 degrees C.ETX