PREPARATION AND CHARACTERIZATION OF CU(AL,GA)(S,SE)2 PENTERNARY ALLOYS

Authors
OGAWA A SUDO R GUPTA A SHIRAKATA S CHICHIBU S MATSUMOTO S ISOMURA S
Citation
A. Ogawa et al., PREPARATION AND CHARACTERIZATION OF CU(AL,GA)(S,SE)2 PENTERNARY ALLOYS, JPN J A P 1, 32, 1993, pp. 588-589
Citations number
9
Categorie Soggetti
Physics, Applied
Journal title
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS → ACNP
Volume
32
Year of publication
1993
Supplement
32-3
Pages
588 - 589
Database
ISI
SICI code
Abstract
Photoreflectance (PR) and Photoluminescence (PL) measurements have bee n performed at 77 K on single crystals of CuAlxGa1-x(S0.5Se0.5)2 pente rnary alloys grown by the iodine chemical vapor transport method. The energies of excitons associated with uppermost valence bands have been obtained as a function of composition, and an approximately quadratic dependence has been found. Near-band-edge PL has been observed in the crystal with x less-than-or-equal-to 0.77, and the PL has been discus sed in terms of the free exciton.