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2018 - 20192

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Author: search.filters.author.Meena PSubject: search.filters.subject.Optical band gap

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    PREPARATION AND PROPERTIES OF QUATERNARY SEMICONDUCTOR CU2NISNS4 (CNTS)) NANOPARTICLES FOR POTENTIAL SOLAR ABSORBER MATERIALS
    (SRM Institute of Science and Technology, 2019-01-28) Deepika R; Meena P
    Phase pure Cu2ZnSnS4 (CZTS) and its related quaternary chalcogenides are promising material for photovoltaic applications. The incorporation of transition metal cations into any semiconductor systems may led to very interesting physical and chemical properties which make them suitable for applications in optoelectronic devices. In this study, a novel synthesis of Cu2NiSnS4 (CNTS) quaternary nanoparticles by the facile Chemical Route Method. The structural, morphological, optical and electrical characteristics of the synthesized nanoparticles have been analyzed. The results obtained confirm the formation of phase pure CNTS nanoparticles. The average size of the synthesized nanoparticles is estimated to be around 30nm. The obtained optical band gap of the CNTS nanoparticles are in good agreement with the optimum value required for an absorber material in photovoltaic solar energy-conversions. This study shows the viability of synthesizing nanoparticles with elements which are abundantly available by using an environmentally-friendly and low cost process which is potential for energy- conversion applications.
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    COLLOIDAL CHEMICAL SYNTHESIS OF TERNARY SEMICONDUCTOR CU2SNS4 (CTS) NANOPARTICLES FOR POTENTIAL SOLAR ENERGY ABSORBER MATERIALS
    (Institute of science and technology, Jawaharlal Nehru Technology University, Hyderabad, 2018-10-04) Deepika R; Jincy C.S; Meena P
    Ternary semiconductor Cu2SnS4 (CTS) nanoparticles have been synthesized by the facileChemical Route Method. Structural, morphological and optical characterization studies of the synthesized CTS nanoparticles have been performed by X-ray diffraction (XRD), Raman Spectroscopy, Energy Dispersive Spectroscopy (EDS), Scanning Electron Microscope (SEM)and UV-VIS Spectroscopy (UV). XRD and Raman spectroscopy are used to confirm the structure and phase. Based on the EDS result, the stoichiometry of the Cu2SnS4 (CTS) was determined and the elemental distribution studied by mapping analysis. The optical absorption studies revealed that the CTS nanoparticles have direct optimal band gap in the range from 1.29 to 1.5eV, which indicates that these nanoparticles are potential absorber materials for thin film photovoltaic applications. The synthesized CTS nanoparticles can be transformed to the ink form, which can be used to directly coat large area thin film solar cells.