Title:
2D-Modeling and Development of Interdigitated Back Contact Solar Cells on Low-Cost Substrates

dc.contributor.author Kim, Dong Seop
dc.contributor.author Meemongkolkiat, Vichai
dc.contributor.author Ebong, Abasifreke
dc.contributor.author Rounsaville, Brian
dc.contributor.author Upadhyaya, V.
dc.contributor.author Das, A.
dc.contributor.author Rohatgi, Ajeet
dc.contributor.corporatename Georgia Institute of Technology. University Center of Excellence for Photovoltaic Research and Education
dc.contributor.corporatename Georgia Institute of Technology. School of Electrical and Computer Engineering
dc.date.accessioned 2008-12-08T21:56:19Z
dc.date.available 2008-12-08T21:56:19Z
dc.date.issued 2006-05
dc.description Presented at the 4th World Conference on Photovoltaic Energy Conversion; Hawaii, USA; May 7-12, 2006. en
dc.description.abstract Two-dimensional numerical simulations were performed to derive design rules for low-cost, high-efficiency interdigitated back contact (IBC) solar cells on a low-cost substrate. The IBC solar cells were designed to be fabricated using either the conventional screen printing or photolithography metallization processes. Bulk lifetime, bulk resistivity, contact spacing (pitch), contact opening width, recombination in the gap between the p(+) BSF and n(+) emitter, and the ratio of emitter width to pitch have been used as key variables in the simulations. It is found that short circuit current density (J(sc)) is not only a strong function of the bulk lifetime but also the emitter coverage of the rear surface. Fill factor (FF) decreases as the emitter coverage increases because the majority carriers need to travel a longer distance through the substrate for longer emitter width. The simulated IBC results were compared with those for conventional screen printed solar cells. It was found that the IBC solar cell outperforms the screen printed (SP) solar cell when the bulk lifetime is above 50 μs due to higher V(oc) and J(sc), which suggests that higher performance can be realized on low-cost substrates with the IBC structure. en
dc.identifier.uri http://hdl.handle.net/1853/25921
dc.language.iso en_US en
dc.publisher Georgia Institute of Technology en
dc.subject Solar cells en
dc.subject Interdigitated back contact (IBC) solar cells en
dc.subject Screen-printed solar cells en
dc.title 2D-Modeling and Development of Interdigitated Back Contact Solar Cells on Low-Cost Substrates 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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relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
relation.isOrgUnitOfPublication 93ace8d3-7479-459e-b63d-27aff6118464
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