Pairing effects in the luminescence spectrum of Zn/sub 2/SiO/sub 4/:Mn
Journal Article
·
· J. Electrochem. Soc.; (United States)
High resolution, low temperature photoluminescence spectra of manganese-doped willemite (Zn/sub 2/SiO/sub 4/:Mn) single crystals have been measured. ''Hot'' bands on the zero-phonon lines of the /sup 4/T/sub 1/ excited state of Mn /SUB Zn/ /sup 2 -/ on inequivalent sites are observed at low Mn concentration between 4 K and 29 K. Their appearance is attributed to vibronic (Ham) quenching of the first-order spin-orbit interaction in the /sup 4/T/sub 1/ excited state, by analogy with known properties of Mn /SUB Zn/ /sup 2 +/ in ZnS and ZnSe. At higher Mn concentration, additional lines appear which are assigned to Mn pair centers involving substitution on nearest neighbor Zn sites. Electron microprobe analysis shows that the segregation coefficient of Mn incorporation in the crystal increases as the Mn concentration in the melt increases. This is indicative of pairwise incorporation during growth, and consistent with the optical detection of Mn pairs in the crystals at higher Mn concentrations. The measured luminescence decay times depend on both Mn concentration and temperature of the crystals, due to thermally activated energy transfer between Mn centers.
- Research Organization:
- IBM T.J. Watson Research Center, Yorktown Heights, New York
- OSTI ID:
- 6812711
- Journal Information:
- J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 131:1; ISSN JESOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ACTIVATION ENERGY
CHALCOGENIDES
CHEMICAL ANALYSIS
CRYSTAL DOPING
CRYSTAL GROWTH
CRYSTALS
DECAY
DOPED MATERIALS
ELECTRON MICROPROBE ANALYSIS
ENERGY
ENERGY LEVELS
ENERGY TRANSFER
EXCITED STATES
INORGANIC PHOSPHORS
LUMINESCENCE
MANGANESE COMPOUNDS
MATERIALS
MELTING
MICROANALYSIS
MINERALS
MONOCRYSTALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHONONS
PHOSPHORS
PHOTOLUMINESCENCE
QUANTITY RATIO
QUASI PARTICLES
QUENCHING
RESOLUTION
SELENIDES
SELENIUM COMPOUNDS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SPECTRA
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
ZINC COMPOUNDS
ZINC SELENIDES
ZINC SILICATES
ZINC SULFIDES
360603* -- Materials-- Properties
ACTIVATION ENERGY
CHALCOGENIDES
CHEMICAL ANALYSIS
CRYSTAL DOPING
CRYSTAL GROWTH
CRYSTALS
DECAY
DOPED MATERIALS
ELECTRON MICROPROBE ANALYSIS
ENERGY
ENERGY LEVELS
ENERGY TRANSFER
EXCITED STATES
INORGANIC PHOSPHORS
LUMINESCENCE
MANGANESE COMPOUNDS
MATERIALS
MELTING
MICROANALYSIS
MINERALS
MONOCRYSTALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHONONS
PHOSPHORS
PHOTOLUMINESCENCE
QUANTITY RATIO
QUASI PARTICLES
QUENCHING
RESOLUTION
SELENIDES
SELENIUM COMPOUNDS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SPECTRA
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
ZINC COMPOUNDS
ZINC SELENIDES
ZINC SILICATES
ZINC SULFIDES