Progress in four-terminal nano-crystalline Si/amorphous Si solar cells

Abstract

We report a conversion efficiency of /spl sim/9.5% using nano-crystalline Si/amorphous Si (nc-Si/a-Si) solar cells constructed in a four-terminal (4-T) tandem junction configuration. This type of tandem junction releases the constraint of current matching from each constituent cell thus allowing the fabrication of thin film Si stable, high efficiency… (More)

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6 Figures and Tables