Cu2ZnSnS4 (CZTS) nanoparticle based nontoxic and earth-abundant hybrid pn-junction solar cells

Saha, Sudip K. ; Guchhait, Asim ; Pal, Amlan J. (2012) Cu2ZnSnS4 (CZTS) nanoparticle based nontoxic and earth-abundant hybrid pn-junction solar cells Physical Chemistry Chemical Physics, 14 (22). pp. 8090-8096. ISSN 1463-9076

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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2012...

Related URL: http://dx.doi.org/10.1039/c2cp41062a

Abstract

A heterojunction between a layer of CZTS nanoparticles and a layer of fullerene derivatives forms a pn-junction. We have used such an inorganic–organic hybrid pn-junction device for solar cell applications. As routes to optimize device performance, interdot separation has been reduced by replacing long-chain ligands of the quantum dots with short-chain ligands and thickness of the CZTS layer has been varied. We have shown that the CZTS–fullerene interface could dissociate photogenerated excitons due to the depletion region formed at the pn-junction. From capacitance–voltage characteristics, we have determined the width of the depletion region, and compared it with the parameters of devices based on the components of the heterojunction. The results demonstrate solar cell applications based on nontoxic and earth-abundant materials.

Item Type:Article
Source:Copyright of this article belongs to Royal Society of Chemistry.
ID Code:98365
Deposited On:05 Jun 2014 05:20
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