Luminescence in lanthanum chlorotungstate (LaWO/sub 4/Cl)

Journal Article · Tue Feb 01 04:00:00 EST 1983 · J. Solid State Chem.; (United States)

DOI:https://doi.org/10.1016/0022-4596(83)90145-7· OSTI ID:5747617

Blasse, G ^[1]; Bokkers, G; Dirksen, G J; Brixner, L H

---

1. State Univ., Utrecht, The Netherlands

The luminescence properties of LaWO/sub 4/Cl are reported and discussed. The tungstate group occurs as a trigonal bipyramid. Although there is some analogy with the luminescence of the tetrahedral tungstate group, the small Stokes shift reveals the presence of five oxygen ions. The luminescence of the following ions was studied: Mo/sup 6 +/, Eu/sup 3 +/, Sm/sup 3 +/ and Tb/sup 3 +/. The molybdate group shows red emission with a larger Stokes shift than the tungstate group. Energy transfer from the tungstate group to the rare earth ions occurs over nearest-neighbor distances, except for Tb/sup 3 +/. Because of a low-lying f-d transition, the transfer efficiency is much higher for this ion.

• OSTI ID: 5747617
• Journal Information: J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 46:2; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CATIONS
CHARGED PARTICLES
CHLORINE COMPOUNDS
ENERGY TRANSFER
EUROPIUM COMPOUNDS
HALOGEN COMPOUNDS
IONS
LANTHANUM COMPOUNDS
LANTHANUM TUNGSTATES
LUMINESCENCE
MOLYBDENUM COMPOUNDS
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
TERBIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES