Progress in triple-junction amorphous silicon-based alloy solar cells and modules using hydrogen dilution

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:208085

Yang, J; Banerjee, A; Glatfelter, T; Hoffman, K; Xu, X; Guha, S ^[1]

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1. United Solar Systems Corp., Troy, MI (United States)

The authors have achieved a stable module efficiency of 10.2% using amorphous silicon-based alloy in a triple-junction structure. This record performance has been accomplished by improving the component cells, the tunnel junction between the component cells, the back reflector, the uniformity over one-square-foot area, and the module design. Further advances have been made in the initial performance of the component cells by using high hydrogen dilution. The top cell, having Jsc > 8 mA/cm{sup 2}, exhibits Voc = 1.014 V and FF = 0.78. The middle cell, showing Voc = 0.757 V and FF = 0.719, exhibits Jsc = 9.5 mA/cm{sup 2} under AM 1.5 illumination with a 530 nm cut-on filter. A record initial power output of 4.43 mW/cm{sup 2} for the bottom cell has been obtained under AM 1.5 with a 630 nm cut-on filter. Light soaking experiments for the improved component cells also show higher stabilized values than previously reported ones.

• OSTI ID: 208085
• Report Number(s): CONF-941203--; ISBN 0-7803-1459-X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
GERMANIUM ALLOYS
HETEROJUNCTIONS
INDIUM OXIDES
PERFORMANCE
QUANTUM EFFICIENCY
SILICON ALLOYS
SILICON SOLAR CELLS
SILVER
STABILITY
STAINLESS STEELS
TIN OXIDES
ZINC OXIDES