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Host lattice dependence of the Bi/sup 3 +/ luminescence in orthoborates LnBO/sub 3/ (with Ln = Sc, Y, La, Gd, or Lu)

Journal Article · · J. Solid State Chem.; (United States)
; ;

The luminescence properties of several Bi/sup 3 +/-activated lanthanide borates (LnBO/sub 3/) are reported. For the calcite-structured borates (ScBO/sub 3/-Bi/sup 3 +/ and the high-temperature modification of LuBO/sub 3/-Bi/sup 3 +/), the Stokes shift is small. In the luminescence spectra vibrational structure is observed. For the compounds with YBO/sub 3/ structure (low-temperature modification of LuBO/sub 3/-Bi/sup 3 +/ and YBO/sub 3/-Bi/sup 3 +/) two luminescent centers are observed. Energy transfer occurs from one type of center to the other. Finally, for LaBO/sub 3/Bi/sup 3 +/ two centers are also observed. One is ascribed to isolated Bi/sup 3 +/ ions and the other to Bi/sup 3 +/ pairs. The Stokes shift of the Bi/sup 3 +/ luminescence varies from 0.22 eV for ScBO/sub 3//sup +/ to 1.16 eV for LaBO/sub 3/Bi/sup 3 +/. This is discussed in terms of the increasing amount of space available to the Bi/sup 3 +/ ion in the host lattice.

Research Organization:
Physical Laboratory, State University Utrecht, Utrecht
OSTI ID:
5956487
Journal Information:
J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 59:3; ISSN JSSCB
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ACTIVATION ENERGY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BORATES
BORON COMPOUNDS
CADMIUM COMPOUNDS
CALCITE
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATES
CHEMICAL SHIFT
CRYSTAL LATTICES
CRYSTAL STRUCTURE
EMISSION SPECTRA
ENERGY
ENERGY TRANSFER
LANTHANUM COMPOUNDS
LUMINESCENCE
LUTETIUM COMPOUNDS
MINERALS
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SCANDIUM COMPOUNDS
SPECTRA
STOKES PARAMETERS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS