Photoluminescence spectra of some ternary and quaternary chalcopyrite semiconductors

Journal Article · Sun May 01 04:00:00 EDT 1988 · J. Vac. Sci. Technol., A; (United States)

DOI:https://doi.org/10.1116/1.575352· OSTI ID:5253511

Abou-Elfotouh, F; Dunlavy, D J; Kazmerski, L L; Albin, D; Bachman, K J; Menner, R

Photoluminescence (PL) emission spectra of single crystals and thin films of CuGa/sub x/In/sub 1/..sqrt../sub x/Se/sub 2/ compounds have been investigated at various measuring temperatures, and compared with the emission from CuGaSe/sub 2/ and CuInSe/sub 2/. The observed PL spectra consisted of two groups of emission lines: the near-band-gap group (A) and the lower energy group (B). It was found that the type of emission obtained is determined by the amount of stoichiometry and molecularity deviations. The PL data also showed a correspondence between the defect related transitions from the CuGa/sub x/In/sub 1/..sqrt../sub x/Se/sub 2/ solid solution and CuGaSe/sub 2/ for x<0.5. Based on the intrinsic defect states in the two components CuInSe/sub 2/ and CuGaSe/sub 2/, the predominant defect states transitions in the solid solution are defined for the m<1 and ..delta..S>0. Interpretation of the PL spectra of Se-deficient compounds with m>1 are rather complicated, and much work remains to be done before the defect chemistry of CuGa/sub x/In/sub 1/..sqrt../sub x/Se/sub 2/ could be fully understood.

• Research Organization: Solar Energy Research Institute, Golden, Colorado 80401
• OSTI ID: 5253511
• Journal Information: J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 6:3; ISSN JVTAD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALLOY SYSTEMS
AMINES
AMMONIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER SELENIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
DISPERSIONS
ELECTRONIC STRUCTURE
FILMS
GALLIUM COMPOUNDS
GALLIUM SELENIDES
INDIUM COMPOUNDS
INDIUM SELENIDES
LUMINESCENCE
MIXTURES
MONOCRYSTALS
ORGANIC COMPOUNDS
PHOTOLUMINESCENCE
QUATERNARY ALLOY SYSTEMS
QUATERNARY COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
SOLID SOLUTIONS
SOLUTIONS
TERNARY ALLOY SYSTEMS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS