Thermal Decomposition of Ternary Chalcopyrite Thin Films
- 1 January 1993
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 32 (S3)
- https://doi.org/10.7567/jjaps.32s3.65
Abstract
Polycrystalline thin films of the ternary chalcopyrite semiconductors CuIn3Se5 and CuInSe2, prepared by a coevaporation process, have been investigated with the Temperature Programmed Desorption method (TPD). The desorbing species have been detected with a mass spectrometer for temperatures up to 750°C. Morphological changes have been observed with SEM and compositional data have been recorded before and after the heat treatments. The decomposition process has been found to start at about 500°C with outgasing of Se2 species, followed by the desorption of In2Se starting at 600°C. CuIn3Se5 thin films could be transformed totally to Cu2Se.Keywords
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