Translator Disclaimer
1 August 2007 Effect of heat treatment on the structural and optical characteristics of polycrystalline ZnTe thin films
Author Affiliations +
Proceedings Volume 6785, ROMOPTO 2006: Eighth Conference on Optics; 67851Y (2007) https://doi.org/10.1117/12.756809
Event: ROMOPTO 2006: Eighth Conference on Optics, 2006, Sibiu, Romania
Abstract
Zinc telluride (ZnTe) thin films (d = 0.12 - 1.92 μm) were prepared by vacuum evaporation (quasi-closed volume technique) onto glass substrates. The structural analysis of the films was performed by X-ray diffraction (XRD) technique and atomic force microscopy (AFM). It was found that the films were polycrystalline and have a zinc blende (cubic) structure. AFM images showed that the films have a grain like surface morphology. The values of the absorption coefficient were determined from transmission and reflection spectra. After different heat treatments transmission coefficient strongly decreases. We consider that this effect is due to tellurium excess atoms which diffuse at crystallite boundaries and form microcristallites. Optical energy gap, calculated from the absorption spectra (for allowed band-to-band transitions) was in the range 2.0 eV - 2.2 eV.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. Prepeliţă, G. G. Rusu, and G. I. Rusu "Effect of heat treatment on the structural and optical characteristics of polycrystalline ZnTe thin films", Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 67851Y (1 August 2007); https://doi.org/10.1117/12.756809
PROCEEDINGS
6 PAGES


SHARE
Advertisement
Advertisement
Back to Top