Abstract
Chalcogenide material of multinary metals are of interest in relation as optoelectronic devices such as laser and solar cell. Cu2SnSe3, ternary chalcogenide, is semiconductor with low bandgap. Beside that Cu2SnSe3 is important precursor for the growth of a promising Cu2ZnSnSe4 thin film solar cell since it contains elements that is abundance in the earth crust. The aim of this work is to synthesis Cu2SnSe3 thin film compound by using simultaneous electrodeposition. The product then was characterized using EDX, XRD, RAMAN and SEM. The result showed that Cu2SnSe3 can be prepared by electrodeposition at a potential of −0.6V vs. Ag/AgCl for 20 min. Annnealing can cause the increase of Cu2SnSe3 sample crystalinity. Annealing in argon atmosphere at 500 °C affected selenium evaporation in the film, therefore it improved Cu/Sn ratio. Further, annealing in selenium atmosphere at temperature of 500 °C can increase the intensity of Cu2SnSe3 crystal much better and also improve the Se/(Cu+Sn) ratio close to ideal val...
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