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Coatings 2017, 7(2), 34; doi:10.3390/coatings7020034

SnS Thin Film Solar Cells: Perspectives and Limitations

1
Laboratory for Applied Physics (LAPS), Department of Computer Science, University of Verona, 37134 Verona, Italy
2
Solid State Chemistry Laboratory, Department of Biotechnology; University of Verona, 37134 Verona, Italy
3
Raman Laboratory, Department of Computer Science, University of Verona, 37134 Verona, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: I. M. Dharmadasa
Received: 27 December 2016 / Revised: 14 February 2017 / Accepted: 16 February 2017 / Published: 22 February 2017
(This article belongs to the Special Issue Thin Film Semiconductors for Photovoltaic Applications)
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Abstract

Thin film solar cells have reached commercial maturity and extraordinarily high efficiency that make them competitive even with the cheaper Chinese crystalline silicon modules. However, some issues (connected with presence of toxic and/or rare elements) are still limiting their market diffusion. For this reason new thin film materials, such as Cu2ZnSnS4 or SnS, have been introduced so that expensive In and Te, and toxic elements Se and Cd, are substituted, respectively, in CuInGaSe2 and CdTe. To overcome the abundance limitation of Te and In, in recent times new thin film materials, such as Cu2ZnSnS4 or SnS, have been investigated. In this paper we analyze the limitations of SnS deposition in terms of reproducibility and reliability. SnS deposited by thermal evaporation is analyzed by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and atomic force microscopy. The raw material is also analyzed and a different composition is observed according to the different number of evaporation (runs). The sulfur loss represents one of the major challenges of SnS solar cell technology. View Full-Text
Keywords: SnS; thin films; solar cells SnS; thin films; solar cells
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Di Mare, S.; Menossi, D.; Salavei, A.; Artegiani, E.; Piccinelli, F.; Kumar, A.; Mariotto, G.; Romeo, A. SnS Thin Film Solar Cells: Perspectives and Limitations. Coatings 2017, 7, 34.

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