TITLE

High-efficiency screen-printed silicon ribbon solar cells by effective defect passivation and rapid thermal processing

AUTHOR(S)
Rohatgi, Ajeet; Jeong, Ji-Weon
PUB. DATE
January 2003
SOURCE
Applied Physics Letters;1/13/2003, Vol. 82 Issue 2, p224
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A conversion efficiency of 15.9% has been achieved on low-cost edge-defined film-fed grown silicon ribbon solar cells. This represents an improvement over the previously reported efficiencies for silicon ribbon solar cells with manufacturable screen-printed contacts and single layer silicon nitride (SiN[sub x]) antireflection coating. Two separate rapid thermal processing cycles with fast ramp-up and cooling rates contributed to the enhancement in cell efficiency. The fast ramp-up rate improved the quality of back surface field and contacts; and a short firing time with a fast cooling rate improved contacts and the SiN[sub x]-induced hydrogen passivation of defects, resulting in bulk lifetime enhancement from ∼2 to ∼50 µs.
ACCESSION #
8858618

 

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