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SnS Thin Films in Chemically Deposited Solar Cell Structures

Published online by Cambridge University Press:  01 February 2011

David Avellaneda,
M. T. S. Nair and
P. K. Nair
David Avellaneda
Affiliation:
daa@cie.unam.mx, Universidad Nacional Autonoma de Mexico, Centro de Investigacion en Energia, Av. Xochicalco S/N, Temixco, Morelos, 62580, Mexico
M. T. S. Nair
Affiliation:
mtsn@cie.unam.mx, Universidad Nacional Autonoma de Mexico, Centro de Investigacion en Energia, Av. Xochicalco S/N, Temixco, Morelos, 62580, Mexico, 525556229731, 525556229742
P. K. Nair
Affiliation:
pkn@cie.unam.mx, Universidad Nacional Autonoma de Mexico, Centro de Investigacion en Energia, Av. Xochicalco S/N, Temixco, Morelos, 62580, Mexico
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Abstract

We report photovoltaic cell structures on SnO2:F (TCO) coated glass substrates. Thin films of CdS, SnS, and CuS or PbS were deposited sequentially from chemical baths to produce the solar cell structures: SnO2:F-CdS- SnS (A)-CuS-Ag;SnO2:F-CdS- SnS (A)-PbS-Ag; and SnO2:F-CdS- SnS (B)-PbS-Ag. Heating SnS-CuS films results in the formation of Cu2SnS3, and sequential depositions of SnS and PbS to obtain solar cellsproduce stratified layers as required for solar cells. The photovoltaic characteristics, Voc 340 mV and Jsc 6 mA/cm2 in these structures suggest that absorber thin films based on tin sulfide are worth investigating as a relatively abundant and non-toxic material for solar cells.

Keywords

semiconductingsolution depositionthin film

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