Structural, FTIR and photoluminescence properties of ZnS:Cu thin films by chemical bath deposition method
2013
Muttukkumaran̲, Ca. (Caṇmukacuntaram) | Ashok kumar, M.
ZnS:Cu thin films were deposited on glass substrate using chemical bath by neutral pH solution synthesis route. Cu is varied between 0 and 0.1M%. The XRD measurement shows hexagonal structure with the average crystalline size between 1.67 and 2.47nm (below Bohr diameter). Energy dispersive X-ray spectrum reveals the presence of Cu in the Zn S lattice. The increase of lattice parameters, the reduction of particle size and a small shift in XRD peaks by Cu-doping reveals the substitution of Cu²⁺ ions into the Zn S lattice. The observed red shift of green emission from 506 to 519nm in photoluminescence spectra confirms the presence of Cu²⁺ ions that are embedded in the Zn S matrix.
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