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Physico chemistry of solids, thin films, biotechnologies
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Paper by Romain Parize 2017

Published on February 20, 2017
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Communique from February 19, 2017 to March 16, 2017

The paper "In situ analysis of the crystallization process of Sb2S3 thin films by Raman scattering and X-ray diffraction" has been published in Materials & Design.

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1-s2.0-S0264127517301624-fx1.jpg

Here  you will find the paper by Romain Parize

"Sb2S3 thin films grown by chemical bath deposition have received increasing interest for its integration into solar cells. However, its crystallization by post-deposition annealing represents a major difficulty owing to its instability at relatively low temperature. We combine in situ Raman scattering at very low laser power with in situ X-ray diffraction over a broad range of annealing temperatures and durations under N2 atmosphere to elucidate its crystallization process on anatase-TiO2 layers. The thermally activated crystallization is found to systematically involve the intermediate formation of a metallic Sb phase and very often of a senarmontite cubic Sb2O3 phase, both of them vanishing prior to the formation of the stibnite Sb2S3 phase. Compact and continuous 150 nm-thick Sb2S3 thin films with no pyramid-shaped clusters on their top surface are crystallized in the range of 240 to 270 °C, namely below the commonly used annealing temperature of 300 °C. Their texture is tunable from (420) and (520) to (020) and (200) planes parallel to the surface by raising the annealing temperature owing to a process of abnormal grain growth. The Sb2S3 thin films crystallized at the optimal annealing temperature of 270 °C are composed of dense crystallites with a typical size of several tens of nanometers, which is of high interest for their integration into solar cells."

http://dx.doi.org/10.1016/j.matdes.2017.02.034



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Written by David Munoz-Rojas

Date of update February 20, 2017

Communauté Université Grenoble Alpes
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