Keywords
band gap levels
cathodoluminescence
chalcopyrite
CIASe
solid solutions
structural data
unit cell parameters
Vegard's rule
Abstract
CuAlxIn1−xSe2 solid solutions with a chalcopyrite crystal structure were synthesized from elemental Cu, In, Al and Se. The dependence of their unit cell parameters on x in a range of 0<x≤0.30 was determined. The band with a maximum at 1.320eV in the cathodoluminescence spectra of CuAlxIn1−xSe2 solid solutions at 78K was most likely due to defects formed upon mutual substitution of atoms between the copper and aluminum–indium sublattices in the chalcopyrite structure.
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