Preparation of SnS Thin Films by Close-Spaced Sublimation at Different Source Temperatures

Author:

Zhan Xiao Ping1,Shi Cheng Wu1,Shen Xin Jie1,Yao Min1,Zhang Yan Ru1

Affiliation:

1. Hefei University of Technology

Abstract

In this paper, thin films of tin monosulfide (SnS) were successfully prepared by close-spaced sublimation (CSS) on the source temperature of 650 °C and 720 °C using SnS powder as a source. The influence of the source temperature on the chemical composition, crystal structure, surface morphology, and direct band gap of SnS thin films was systemically investigated by energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), scanning electron microscope (SEM), UV-Vis-NIR absorption spectra, respectively. The results showed that the SnS grain size increased from 3 μm to 20 μm by increase of the source temperature from 650 °C to 720 °C. The direct band gaps of SnS thin films prepared at different source temperatures 650 °C and 720 °C were 1.21 and 1.15 eV, respectively.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

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