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Highly transparent ZnS buffer layer prepared by ultrasonic spray pyrolysis for photovoltaic applications

Deepa, K G and Anantha, Sunil M and Jampana, Nagaraju (2017) Highly transparent ZnS buffer layer prepared by ultrasonic spray pyrolysis for photovoltaic applications. In: JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 126 . pp. 188-193.

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Official URL: http://doi.org/10.1016/j.jaap.2017.06.009

Abstract

Zinc sulfide thin films are deposited by ultrasonic spray pyrolysis. The substrate temperature and sulfur concentrations are varied to attain suitable property for the application as window layer in solar cells. Films prepared at lower temperature have traces of ZnO phase together with the dominant cubic ZnS phase. At 400 degrees C with Zn/S ratio of 1/1.5, sample exhibited higher transmittance (similar to 86%) consistently in the visible region. With an increase in the sulfur concentration transmittance reduced to similar to 50%. Band gap varied from 3.5 to 3.8 eV in the films. The existence of single phase ZnS is confirmed through XPS analysis of the optimized sample. 0.5% efficiency is obtained for AgInS2/ZnS solar cells with the optimized ZnS film.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Depositing User: Id for Latest eprints
Date Deposited: 16 Sep 2017 05:50
Last Modified: 16 Sep 2017 05:50
URI: http://eprints.iisc.ac.in/id/eprint/57836

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