Combustion synthesis and luminescence properties of NaY1−xEux(WO4)2 phosphors

Qian, Xianhua; Pu, Xipeng; Zhang, Dafeng; Li, Lei; Li, Meijing; Wu, Shutong

doi:10.1016/j.jlumin.2011.04.007

Cited by 29 publications

(17 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The observed UV excitation bands were assigned to the intervalence charge transfer (IVCT) transitions and the 5 D 3 quenching of Tb 3+ was attributed to the presence of an IVCT state [33,34]. In order to investigate the effect of IVCT in our samples, we inspected the excitation spectra of Tb 3+ in this study and that for Dy 3+ -and Eu 3+ -doped NaY(WO 4 ) 2 [19,35] and found that these materials have the very similar UV excitation bands centered at around 260 nm. Since there is not IVCT for Dy 3+ -and Eu 3+ -doped NaY(WO 4 ) 2 according to the IVCT model, the UV excitation bands for these materials must have the same origin, viz., the fundamental host absorption due to O 2À !…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and photoluminescence of Tb3+ Activated NaY(WO4)2 phosphors

Liu

Xiang

Chen

et al. 2012

Materials Research Bulletin

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

“…Of these tungstates, sodium yttrium tungstate NaY(WO 4 ) 2 with tetragonal scheelite-type (CaWO 4 ) structure has excellent physical-chemical stability, and is considered recently to be an efficient luminescent host candidate [18,19].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photoluminescence of Tb3+ Activated NaY(WO4)2 phosphors

Liu

Xiang

Chen

et al. 2012

Materials Research Bulletin

View full text Add to dashboard Cite

“…or Tb 3? activated NaY(WO 4 ) 2 host lattice [27][28][29]32]. In our previous reports, we prepared NaLa(WO 4 ) 2 :Er 3?…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis, multicolor tunable luminescence and energy transfer of Eu3+ or/and Tb3+ activated NaY(WO4)2 nanophosphors

Liu

Wang

et al. 2016

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Eu 3? and/or Tb 3? doped NaY(WO 4 ) 2 nanomaterials have been successfully synthesized by one-step hydrothermal method. The samples were characterized by X-ray diffraction, field-emission scanning electron microscopy, X-ray energy dispersive spectroscopy, and photoluminescence spectra. The results show that the novel nanoplates with a diameter of 300-600 nm and the thickness of 20-25 nm are observed. Under the excitation of 246 or 230 nm, individual RE 3? ions activated NaY(WO 4 ) 2 phosphors exhibit excellent emission properties in their respective regions. The as-prepared Eu 3? or Tb 3? doped samples show strong red and green emission, originating from the allowed 5 D 0 ? 7 F J (J = 0, 1, 2) transition of the Eu 3? ions and the 5 D 4 ? 7 F J (J = 6, 5, 4, 3) transition of the Tb 3? ions. In addition, by properly tuning the relative concentration of Eu 3? ions in the case of Eu 3? and Tb 3? co-doped systems, tunable emissions in a single component are obtained under the excitation of 230 or 395 nm. Moreover, an energy transfer from Tb 3? to Eu 3? is observed, which has been justified through the luminescence spectra and the fluorescence decay curves. Furthermore, the corresponding luminescence and energy transfer mechanism have been proposed in optical transitions and possible energy transfer scheme. These results indicate that Eu 3? and Tb 3? doped NaY(WO 4 ) 2 phosphors will find potential application in the field of solid-state lighting.

show abstract

“…On the other hand, NGW crystals also have the advantages of the stable chemical properties, wide absorption in ultraviolet (UV) region and high damage threshold. Few reports have been published with these type of materials such as NaY 1 À x Eu x (WO 4 ) 2 , Eu 3 þ -doped NaGd (WO 4 ) 2 , Tb 3 þ -doped NaGd(WO 4 ) 2 , Dy 3 þ :NaY(WO 4 ) 2 , Eu 3 þ doped KGd(WO 4 ) 2 and Pr 3 þ doped CsGd(WO 4 ) 2 [23][24][25][26]. These reports show that most of the double tungstate based phosphors were prepared by conventional solid state reaction methods.…”

Section: Introductionmentioning

confidence: 99%