The luminescence of bismuth tungstates

Tuning oxygen vacancy photoluminescence in monoclinic Y2WO6 by selectively occupying yttrium sites using lanthanum

“…However, the photoluminescence mechanism of the matrix such as lanthanum, lutetium and yttrium tungstates (La 2 WO 6 , Lu 2 WO 6 , Nd 2 WO 6 and Y 2 WO 6 )31323334353637 after importing isovalent and non-activated ions is still open to be exploited. The luminescent properties of Bi 2 WO 6 with and without La 3+ doping were compared at low temperature 4 K38, having found that La 3+ doping increased the stokes shift of the matrix luminescence.…”

Luminescence of thin films of bismuth and lead complex oxide compounds

“…The studies carried out earlier have shown that the basic luminescence in the both types of films is related to the centres associated with the autolocalized Frenkel excitons describing the excited state of the (WO 4 ) 2− complexes and to the (WO 4 ) 2− centres associated with the oxygen vacancies or coupled with them (Bordun and Stetskiv, 2001). The (WO 4 ) 2− complexes are common structural units peculiar for both the sheelite structure in PbWO 4 (Nikl et al, 1997) and the sheelite-like structure typical for Bi 2 WO 6 (Blasse and Dirksen, 1982;Folkerts and Blasse, 1994).…”

Bismuth tungstate Bi2WO6: a review on structural, photophysical and photocatalytic properties

“…66 In orthorhombic bismuth tungstate Bi 2 WO 6 , the luminescence is also determined by the [WO 4 ] 2 complex. 67 Bordun et al 68 have conrmed these ndings in their investigations on BWO and PbWO 4 thin lms, which showed that the luminescence bands were related to the [WO 4 ] 2− groups, even with substitutions or changes in crystal eld symmetry. They also observed a strong electron-photon interaction, indicating the local character of the electronic excitations undergoing radiative decomposition.…”