화학공학소재연구정보센터
Applied Surface Science, Vol.418, 216-224, 2017
Growth and characterization of chalcostibite CuSbSe2 thin films for photovoltaic application
Bulk copper antimony selenide was synthesized using mechanical alloying from the elemental precursors. Phase formation in milled powders was studied using x-ray diffraction (XRD) and Raman spectroscopy studies. The synthesized bulk source after cold compaction was used as source material for thin film deposition by e-beam evaporation. Thin film deposition was carried out at various e-beam current values (I-b similar to 30, 40 and 50 mA) and at a substrate temperature of 200 degrees C. Near stoichiometric CuSbSe2 thin films were obtained for I-b values closer to 50 mA and post annealing at a temperature of 380 degrees C for 1 h. Thin films deposited using above conditions were found to exhibit an absorption coefficient (a) values of >10(5) cm(-1) and a band gap value similar to 1.18 eV that is closer to the reported band gap for CuSbSe2 compound. 2017 Elsevier B.V. All rights reserved.