The effect of pressure on the luminescence of ZnS and Zn[sub x]Cd[sub 1[minus]x]S doped with Cu[sup +], Cl[sup [minus]], and Al[sup 3+]

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1006/jssc.1993.1273· OSTI ID:5043089

Lang, J M; Dreger, Z A; Drickamer, H G ^[1]

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1. Univ. of Illionis Urbana, IL (United States)

Photoluminescence measurements as a function of pressure were made on ZnS and Zn[sub x]Cd[sub 1[minus]x]S (x = 0.937) samples doped with Cu[sup +], Cl[sup [minus]], and Al[sup 3+]. A limited amount of thermoluminescence and optical absorption data aided in the interpretation. In contrast to the ZnS:Cu:Cl studied earlier, these materials were light yellow in color and could be excited by the 442-nm as well as the 325-nm line of a He-Cd laser. When excited by the 325-nm line into the conduction band the emission peaks shifted to higher energy at a rate which could be related to the increase of the energy gap with pressure. Optical absorption data combined with the excitation spectra of Hoshina and Kawai demonstrated that for the Zn[sub x]Cd[sub 1[minus]x]S phosphor 442-nm excitation was via an excitation band apparently pinned to the conduction band. For ZnS the 442-nm excitation was from a complex acceptor band to the conduction band. The peak shift with pressure indicated that the upper states of this band were no longer pinned to the valence band.

• DOE Contract Number: FG02-91ER45439
• OSTI ID: 5043089
• Journal Information: Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 106:1; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
ALUMINIUM
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CHARGED PARTICLES
CHLORINE
COPPER
CRYSTAL DOPING
ELEMENTS
HALOGENS
HIGH PRESSURE
INORGANIC PHOSPHORS
IONS
LUMINESCENCE
MEDIUM PRESSURE
METALS
NONMETALS
PHOSPHORS
PHOTOLUMINESCENCE
PRESSURE DEPENDENCE
STOICHIOMETRY
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS
VERY HIGH PRESSURE
ZINC COMPOUNDS
ZINC SULFIDES