Pairing effects in the luminescence spectrum of Zn/sub 2/SiO/sub 4/:Mn

Journal Article · Sun Jan 01 00:00:00 EST 1984 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2115496· OSTI ID:6812711

Robbins, D J; Chang, I F; Giess, E A; Mendez, E E

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), Vol. 131:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MANGANESE COMPOUNDS
PHOTOLUMINESCENCE
SILICATE MINERALS
ZINC SILICATES
ACTIVATION ENERGY
CRYSTAL DOPING
CRYSTAL GROWTH
DECAY
DOPED MATERIALS
ELECTRON MICROPROBE ANALYSIS
ENERGY TRANSFER
EXCITED STATES
MELTING
MONOCRYSTALS
PHONONS
QUANTITY RATIO
QUENCHING
RESOLUTION
SPECTRA
TEMPERATURE DEPENDENCE
ZINC SELENIDES
ZINC SULFIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
CRYSTALS
ENERGY
ENERGY LEVELS
INORGANIC PHOSPHORS
LUMINESCENCE
MATERIALS
MICROANALYSIS
MINERALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHORS
QUASI PARTICLES
SELENIDES
SELENIUM COMPOUNDS
SILICATES
SILICON COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZINC COMPOUNDS
360603* - Materials- Properties