Kesterite Cu2ZnSn(S1−x,Sex)4 film synthesis through ethanol-thermal route with sulfurization/selenization treatments

Abstract

This contribution reports, for the first time, the successful synthesis of kesterite Cu2ZnSn(S1-x,Sex)4 films by a simple ethanol-thermal method, followed by sulfurization/selenization annealing treatments for stoichiometric control of the products. The annealing processes under various experimental conditions have a significant impact on microscopic properties of the films, such as morphology and crystallinity. In particular, the energy band gap of obtained nanocrystal films was tuned from 1.43 eV to 1.1 eV after the implementation of different annealing treatments. Correspondingly, a preliminary evaluation of photovoltaic response was conducted, and the measurements indicated that the Se/S ratio, controlled by sulfurization/selenization processes, can be a decisive factor in the optoelectronic performance of Cu2ZnSn(S1-x,Sex)4 films.

Department(s)

Physics, Astronomy, and Materials Science

Document Type

Article

DOI

https://doi.org/10.1016/j.matlet.2014.10.051

Keywords

Cu ZnSn(S, Se ) 2 1-x x 4, Ethanol-thermal method, Films, Selenization, Sulfurization

Publication Date

1-15-2015

Journal Title

Materials Letters

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