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Use of Super-Thin Modulated Reactants to Influence Binary Intermediate Formation in Thin Film CuInSe2 Synthesis

Published online by Cambridge University Press:  10 February 2011

M. Musialowski,
S. Guffey,
M. D. Hornbostel and
D. C. Johnson
M. Musialowski
Affiliation:
Department of Chemistry and Materials Science Institute, University of Oregon, Eugene, Oregon 97403
S. Guffey
Affiliation:
Department of Chemistry and Materials Science Institute, University of Oregon, Eugene, Oregon 97403
M. D. Hornbostel
Affiliation:
Department of Chemistry and Materials Science Institute, University of Oregon, Eugene, Oregon 97403
D. C. Johnson
Affiliation:
Department of Chemistry and Materials Science Institute, University of Oregon, Eugene, Oregon 97403
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Abstract

A multilayer synthesis of polycrystalline CuInSe2 has been performed by vacuum evaporation with repeat layers thinner than 225Å. Samples deposited with different elemental sequences and repeat layer thicknesses were analyzed by x-ray diffraction as a function of annealing temperature. Samples with 225Å layers produce multiple phases in the synthetic pathway. In samples with thinner layers small amounts of In2Se3 were detected but CuInSe2 predominated. Diffraction and calorimetry data indicate that CuInSe2 and In2Se3 crystallites begin growth at room to moderate temperatures. Layering of samples was probed by grazing angle x-ray diffraction and similarly indicates interdiffusion of layers at room to moderate temperatures.

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