Laser-induced synthesis of thin CuInSe2 films

Joliet, M. C.; Antoniadis, C.; Andrew, R.; Laude, L. D.
February 1985
Applied Physics Letters;2/1/1985, Vol. 46 Issue 3, p266
Academic Journal
Thin films of CuInSe[sub 2] are synthesized by laser irradiation of Cu-In-Se sandwiches in 1:1:2 atomic proportion. Using transmission electron microscopy (TEM), electron diffraction, and optical spectrometry, the presence of semiconducting ternary compound CuInSe[sub 2], with the chalcopyrite structure, is strongly evidenced in all the irradiated samples, supported or not, with no other phases observed. For glass-supported films, the optical absorbance characteristic of a uniformly transformed region indicates a direct optical band gap of (0.95 ± 0.10) eV. Crystallites obtained on free-standing films (i.e., supported on TEM grids) can reach 20 µm in dimension.


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