Enhanced Bandgap Energy of Zirconium-doped Chromium Sulphide Material Synthesized via Electrochemical Deposition Technique
Keywords:
CrS, Zr/CrS, bandgap, metal, electrodepositionAbstract
In this study, the electrochemical deposition was used to synthesize Zr-doped CrS for photovoltaic application. The XRD diffraction angle of CrS and Zr-doped CrS material at 2θ = 25.256o and 27.009o confirmed the existence of CrS and Zr-doped CrS material. The diffraction peaks at 2θ = 25.256o, 30.329o, 34.426o, 41.198o, 45.678o, 56.389o and 65.231o correspond respectively to the diffraction planes of 111, 112, 116, 200, 201, 211 and 300 of CrS materials. And the diffraction peaks at 2θ = 27.009o, 34.321o, 38.471o, 52.345o, 55.177o, 62.397o and 66.548o correspond respectively to the diffraction planes of 111, 112, 116, 200, 201, 211 and 300 of Zr-doped CrS materials. The analysis reveals that the films contain nanoparticles of various sizes, from a few nanometers to tens of nanometers. At a dopant concentration of 0.01 M, the nanoparticles aggregate and have irregular shapes. When the concentration reaches 0.03 M, the irregular particles change into nano balls. The energy bandgap of CrS is 2.35 eV, but when Zr is doped into CrS, the energy bandgap ranges from 2.01 to 1.55 eV.
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