Tunable luminescence of Bi³⁺-doped YP_xV_{1 − x}O₄(0 ≤ x ≤1)

Abstract

A systematic investigation of the luminescence spectroscopy of Y(P,V)O4:Bi(3+) is presented. The emission spectra and the decay curves are measured as a function of the host morphology, composition, temperature, excitation wavelength, and doping concentration. On this basis, the nature of the excited states and the radiative and non-radiative relaxation processes are discussed. Colour coordinates and quantum yield measurements are also carried out to provide information about the potential applications of the studied materials.

Tuning the Bi3+-photoemission color over the entire visible region by manipulating secondary cations modulation in the ScVxP1−xO4:Bi3+ (0 ≤ x ≤ 1) solid solution

“…Because of a naked 6s electron in the electronic configuration of [Xe]-4f 14 5d 10 6s 2 [22,[32][33][35][36][37][38], the Bi 3+ ion, depending on the specific crystal host it built into, can present the emissions broadly spanning from the UV [39], blue [40], yellow [41] and to reddish/red region [35,[32][33]42], which are analogous to the Eu 2+ , Ce 3+ , and Mn 2+ ions. As compared to the frequently reported Eu 2+ , Ce 3+ , and Mn 2+ tunable solid solutions, however, only a very limited examples of Bi 3+ emission solid solutions have been reported in the literatures, such as (Yx,Luy,Scz)VO4:Bi 3+ (yellow → reddish/red) [22], Ba3-xSrxSc4O9:Bi 3+ (blue → green) [43], and YPxV1-xO4:Bi 3+ (blue → yellow) [44].…”

Luminescence and photo‐thermally stimulated defect‐creation processes in Bi3+‐doped single crystals of lead tungstate

“…[34]. In our opinion, one can interpret in the same way the broad emission bands with large Stokes shifts of some other Bi 3þ -doped complex oxides, e.g., vanadates [35,36,[63][64][65][66], phosphates [35][36][37][38], LaOBr [39], Y 2 WO 6 [40] (see also Ref. [41]), and some Bi-containing compounds [42].…”

Visualization of UV by Nanopatterned Down‐Shifting Materials Mimicking Human Retinal Cone Cells

“…The weak blue emission is combined with the weak red emission from Y 2 O 3 :Eu 3+ , leading to the pink color. All the DS materials used in our experiment are reported to have relatively high quantum yield ranging from 50% to 100% except the Y 2 O 3 :Bi 3+ …”