ZnSe Window Thin Films as Candidate for Sb2Se3 Solar Cells

I. Gadiaca, D. Untilab, I. Lungua, M. Dobromirc, T. Potlogb aDoctoral School ``Natural Sciences'', Moldova State University, 60 Al. Mateevici St., MD-2009, Chişinău, Republic of Moldova bLaboratory of Organic/Inorganic Materials for Optoelectronics, Moldova State University, 60 Al. Mateevici St., MD-2009, Chişinău, Republic of Moldova cResearch Centre on Advanced Materials and Technologies, Department of Exact and Natural Sciences, Institute of Interdisciplinary Research, Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd., 700506, Iasi, Romania

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The influence of the technological conditions on the structure of ZnSe thin films deposited by the close-spaced sublimation method onto SnO2/glass and ITO/glass substrates was studied. The manufacturing parameters were optimized by varying substrate temperature. The X-ray diffraction analysis of the ZnSe thin films showed that films deposited at both types of substrates were polycrystalline in nature with zinc-blende structure, and a preferential peak corresponded to (400) plane for SnO2/glass regarding the substrate temperature, while for ITO/glass substrate with increasing substrate temperature, it was changing from (111) to (220). The elemental composition of ZnSe thin films deposited onto SnO2/glass and ITO/glass substrates was confirmed by the energy-dispersive and X-ray photoelectron spectroscopy techniques. Also, ZnSe/Sb2Se3 heterostructures have been fabricated with SnO2/glass and ITO/glass substrates and investigated for their use in photovoltaic applications. This paper also examined how varying the type of transparent electrode used in solar cell fabrication impacts the device's photovoltaic parameters.

DOI:10.12693/APhysPolA.146.424 topics: close-spaced sublimation (CSS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), J-V characteristics