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(a) cubic sphalerite-like structure and (b) XRD pattern of as-deposited Cu2SnSe3 thin filmRaman spectrum of Cu2SnSe3 thin film(a) surface morphology and (b) elemental composition of Cu2SnSe3 thin film(a) optical absorption and (b) band gap plot of Cu2SnSe3 thin filmI-V characteristics plot of Cu2SnSe3 thin film