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Hussein Shokrvash

Academic rank: Assistant Professor
ORCID:
Education: PhD.
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Faculty: 1
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Research

Title
Optical and electrical properties of copper-incorporated ZnS films applicable as solar cell absorbers
Type
JournalPaper
Keywords
ZnS; Cu2C doped ZnS; UV–visible absorption; photoluminescence
Year
2016
Journal Journal of Semiconductors
DOI
Researchers Masood Mehrabian ، Zabihollah Esteki ، Hussein Shokrvash ، Ghasem Kavei

Abstract

Un-doped and Cu-doped ZnS (ZnS:Cu) thin films were synthesized by Successive Ion Layer Absorption and Reaction (SILAR) method. The UV–visible absorption studies have been used to calculate the band gap values of the fabricated ZnS:Cu thin films. It was observed that by increasing the concentration of Cu2C ions, the Fermi level moves toward the edge of the valence band of ZnS. Photoluminescence spectra of un-doped and Cu-doped ZnS thin films was recorded under 355 nm. The emission spectrum of samples has a blue emission band at 436 nm. The peak positions of the luminescence showed a red shift as the Cu2C ion concentration was increased, which indicates that the acceptor level (of Cu2C) is getting close to the valence band of ZnS.