Luminescence of rare-earth activated Gd/sub 2/GeO/sub 5/
Journal Article
·
· Mater. Res. Bull.; (United States)
The luminescence properties of Ln/sup 3+/-activated Gd/sub 2/GeO/sub 5/ are reported. The results show that the Ln/sup 3+/ ions are incorporated on both Gd/sup 3+/ sites in Gd/sub 2/GeO/sub 5/. The Gd/sup 3+/ ..-->.. Ln/sup 3+/ transfer probability increases in the sequence Sm/sup 3+/ less than or equal to Tb/sup 3+/ < Dy/sup 3+/ < defect center < Gd/sup 3+/ trap < Tb/sup 3+/ less than or equal to Dy/sup 3+/. The excitation of the emitting centers is mainly due to the trapping of holes. An observed broad-band emission with a maximum at 445 nm is ascribed to a lattice defect.
- Research Organization:
- Physical Lab., State Univ. Utrecht, P.O. Box 80.000, 3508 TA Utrecht
- OSTI ID:
- 5033891
- Journal Information:
- Mater. Res. Bull.; (United States), Vol. 21:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
GADOLINIUM OXIDES
CRYSTAL LATTICES
LUMINESCENCE
GERMANIUM OXIDES
CRYSTAL DEFECTS
DYSPROSIUM IONS
EMISSION
EUROPIUM IONS
EXCITATION
HOLES
ION MOBILITY
PROBABILITY
SAMARIUM IONS
TERBIUM IONS
TRAPPING
X RADIATION
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL STRUCTURE
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
GADOLINIUM COMPOUNDS
GERMANIUM COMPOUNDS
IONIZING RADIATIONS
IONS
MOBILITY
OXIDES
OXYGEN COMPOUNDS
PARTICLE MOBILITY
RADIATIONS
RARE EARTH COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
GADOLINIUM OXIDES
CRYSTAL LATTICES
LUMINESCENCE
GERMANIUM OXIDES
CRYSTAL DEFECTS
DYSPROSIUM IONS
EMISSION
EUROPIUM IONS
EXCITATION
HOLES
ION MOBILITY
PROBABILITY
SAMARIUM IONS
TERBIUM IONS
TRAPPING
X RADIATION
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL STRUCTURE
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
GADOLINIUM COMPOUNDS
GERMANIUM COMPOUNDS
IONIZING RADIATIONS
IONS
MOBILITY
OXIDES
OXYGEN COMPOUNDS
PARTICLE MOBILITY
RADIATIONS
RARE EARTH COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies