String Ribbon Silicon Solar Cells with 17.8% Efficiency

Kim, Dong Seop; Gabor, A. M.; Yelundur, Vijay; Upadhyaya, A. D.; Meemongkolkiat, Vichai; Rohatgi, Ajeet

Title:

String Ribbon Silicon Solar Cells with 17.8% Efficiency

dc.contributor.author	Kim, Dong Seop
dc.contributor.author	Gabor, A. M.
dc.contributor.author	Yelundur, Vijay
dc.contributor.author	Upadhyaya, A. D.
dc.contributor.author	Meemongkolkiat, Vichai
dc.contributor.author	Rohatgi, Ajeet
dc.contributor.corporatename	Evergreen Solar, Inc.
dc.contributor.corporatename	Georgia Institute of Technology. University Center of Excellence for Photovoltaic Research and Education
dc.date.accessioned	2008-12-15T15:53:22Z
dc.date.available	2008-12-15T15:53:22Z
dc.date.issued	2003-05
dc.description	Presented at the 3rd World Conference on Photovoltaic Energy Conversion; Osaka, Japan; May 11-18, 2003.	en
dc.description.abstract	We have fabricated 4 cm(2) cells on String Ribbon Si wafers with efficiencies of 17.8% using a combination of laboratory and industrial processes. These are the most efficient String Ribbon devices made to date, demonstrating the high quality of the processed silicon and the future potential for industrial String Ribbon cells. Cofiring PECVD (Plasma Enhanced Chemical Vapor Deposition) silicon nitride (SiN(x)) and Al was used to boost the minority carrier lifetime of bulk Si. Photolithography front contacts were used to achieve low shading losses and low contact resistance with a good blue response. The firing temperature and time were studied with respect to the trade-off between hydrogen retention and aluminum back surface field (Al-BSF) formation. Bulk defect hydrogenation and deep Al-BSF formation took place in a very short time (~1 sec) at temperatures higher than 740 degrees C.	en
dc.identifier.uri	http://hdl.handle.net/1853/26154
dc.language.iso	en_US	en
dc.publisher	Georgia Institute of Technology	en
dc.subject	Solar cells	en
dc.subject	Silicon solar cells	en
dc.subject	String ribbon cells	en
dc.title	String Ribbon Silicon Solar Cells with 17.8% Efficiency	en
dc.type	Text
dc.type.genre	Proceedings
dspace.entity.type	Publication
local.contributor.author	Rohatgi, Ajeet
local.contributor.corporatename	School of Electrical and Computer Engineering
local.contributor.corporatename	College of Engineering
local.contributor.corporatename	University Center of Excellence for Photovoltaics
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