Abstract
The nanocrystalline ZnS semiconducting thin films of 500 nm thickness have been deposited on glass substrate at different substrate temperatures (T s) by thermal evaporation technique. The structural property of deposited thin films has been measured by X-ray diffraction, scanning electron microscopy, and Energy dispersive analysis of X-ray. The electrical and optical properties of thin films have been determined by D.C. two point probe and ultra-violet visible spectroscopy measurements. The X-ray diffraction patterns show that thin films have cubic structure. The electrical resistivity of thin films has decreased from 0.36 × 106 to 0.15 × 106 Ω cm as substrate temperature increases from 300 to 400 K. It shows that films have semiconducting in nature. The grain size and electrical conductivity of the thin films have increased as the deposition temperature increased while dislocation density, activation energy, and band gap decreased. The minimum band gap 3.43 eV has been found.
Highlights
The nanocrystalline zinc sulfide (ZnS) semiconductor has attracted much attention from the viewpoint of fabrication of many optoelectronics devices because of their unique properties such as quantum size effect [1, 2] and abnormalDepartment of Physics and Electronics, Dr R M L Avadh University, Faizabad, UP, India luminescence phenomenon [3,4,5]
The aim of the present study is to investigate the effect of substrate temperature on the structural, electrical, and optical properties of ZnS thin films deposited on glass substrate by thermal evaporation
The X-ray diffraction patterns of the deposited semiconducting ZnS thin films are shown in Figs. 1, 2, 3, 4 and 5
Summary
The nanocrystalline zinc sulfide (ZnS) semiconductor has attracted much attention from the viewpoint of fabrication of many optoelectronics devices because of their unique properties such as quantum size effect [1, 2] and abnormal. The aim of the present study is to investigate the effect of substrate temperature on the structural, electrical, and optical properties of ZnS thin films deposited on glass substrate by thermal evaporation
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