A study on solution deposited CuSCN thin films: Structural, electrochemical, optical properties

Autor: Blessing N. Ezealigo, Assumpta C. Nwanya, Aline Simo, R. Bucher, Rose U. Osuji, Malik Maaza, M.V. Reddy, Fabian I. Ezema
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Arabian Journal of Chemistry, Vol 13, Iss 1, Pp 346-356 (2020)
Druh dokumentu: article
ISSN: 1878-5352
DOI: 10.1016/j.arabjc.2017.04.013
Popis: A cost-effective successive ionic layer adsorption and reaction (SILAR) method was used to deposit copper (I) thiocyanate (CuSCN) thin films on glass and steel substrates for this study. The deposited thin films were characterized for their structural, morphological, optical and electrochemical properties using X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–visible spectroscopy and VersaSTAT potentiostat. A direct band gap of 3.88 eV and 3.6 eV with film thickness of 0.7 μm and 0.9 μm was obtained at 20 and 30 deposition cycles respectively. The band gap, microstrain, dislocation density and crystal size were observed to be thickness dependent. The specific capacitance of the CuSCN thin film electrode at 20 mV/s was 760 F g−1 for deposition 20 cycles and 729 F g−1 for deposition 30 cycles. Keywords: CuSCN, Successive ionic layer adsorption and reaction (SILAR), Band gap, Micro strain, Photoluminescence, Electrochemical activities
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