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Lattice constants and band-gap variations of the pentenary semiconductor system Cu/sub 1-y/Ag/sub y/InS/sub( 21-x/)Se/sub 2x/

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.90677· OSTI ID:6339803
Much interest has been expressed in the ternary IB-III-VI/sub 2/ group semiconductors for use in electro-optical devices such as solar cells. Subsets of these, AgInS/sub 2/, AgInSe/sub 2/, CuInS/sub 2/, and CuInSe/sub 2/, have been combined to form the pentenary alloy system Cu/sub 1-y/Ag/sub y/InS/sub( 21-x/)Se/sub 2x/. With such an alloy the band gap may be varied while keeping the lattice constant fixed. Samples were prepared by reacting stoichiometric powder mixtures at about 900 /sup 0/C. X-ray diffractometry tests suggest the alloys maintained complete solid solubility throughout the system in a chalcopyrite-type crystal structure. From cathodoluminescence studies on pressed bars of these powders the band-gap energies were estimated at 300 /sup 0/K. These tests suggest that the alloys are all direct-band-gap semiconductors.
Research Organization:
Department of Engineering Physics, McMaster University, Hamilton, Ontario, Canada, L8S 4M1
OSTI ID:
6339803
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 34:11; ISSN APPLA
Country of Publication:
United States
Language:
English