Influence of selenization techniques on the reaction kinetics of chalcopyrite thin films

In this study, CuInSe2 thin films were prepared by the reaction of identical metallic alloys with three different chalcogenide sources. Comparisons were drawn in terms of morphological features, the formation of crystalline phases, level of Se incorporation and the degree of in-depth compositional uniformity after each reaction process. For a given set of experimental parameters (i.e. specific reaction temperature and exposure period), H2Se/Ar treated samples showed superior structural features. higher levels of Se incorporation and improved in-depth compositional uniformity. From this fundamental study, considerable insight was gained regarding the growth kinetics of the respective selenization processes. (C) 2001 Published by Elsevier Science B.V. All rights reserved.