Synthesis and luminescence properties of Bi3+-doped YVO4 phosphors

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

“…This phenomenon has been reported by Park [24]. In addition, the doping of Bi 3 þ into YVO 4 :Eu 3 þ system caused the excitation band edge to shift toward the longer wavelength (from 350 nm to 365 nm) due to the low energy absorption involving the metal-to-metal charge transfer band [25,26]. was observed.…”

Excitation wavelength-dependent near-infrared luminescence from Bi-doped silica glass

“…In addition, no apparent absorption was observed from visible to NIR region, indicating Bi 5+ has no transition in such wavelength region [26]. The emissions from the Bi 3+ and Bi 2+ locate in the visible region with short fluorescence lifetime of about several microseconds due to allowed transitions [17]. Besides, the NIR emission was observed in the Bi doped chalcogenide glass, indicating BiO molecule is not the origin of the NIR emission [27].…”

“…Contrary to these instrumentations, optical spectroscopy will not bring fake information during measurement, and it is hypersensitive to the valence state of activators and the changes of local environment around them. For instance, Bi 3+ fluoresces in ultraviolet to visible range [17], and Bi 2+ in red range [18,19]. So it will be meaningful to study the optical properties of bismuth doped silica, particularly the dependence of emission peaks on the excitation wavelengths.…”

Synthesis and Luminescence Properties of (Y, Gd) (P, V)O4:Eu3+, Bi3+Red Nano-phosphors with Enhanced Photoluminescence by Bi3+, Gd3+ Doping

“…Yttrium vanadate (YVO 4 ) has been proved one of the best candidates for doping into rare earth ions [8] since it provides a suitable Y 3+ site where trivalent rare-earth ions can be replaced without additional charge compensation. In particular, as a typical red-emitting phosphor, europium doped YVO 4 has been explored in many fields [8][9][10][11]. Recent years, much attention has been focused on the nanoscale phosphors.…”

“…It was found that high concentration doping of Gd 3+ and P 5+ into YVO 4 :Eu 3+ would increase the photoluminescence intensity [3,19]. And Bi 3+ ion can be used as a sensitizer to strengthen and broaden the ultraviolet-vacuum ultraviolet (UV-VUV) excitation bands [10]. In this paper, three kinds of ions (Bi 3+ , P 5+ and Gd 3+ ) were co-doped into YVO 4 :Eu 3+ to improve the photoluminescence properties by using a subsection method.…”