| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1814574 | Physica B: Condensed Matter | 2008 | 5 Pages |
The Y0.85Bi0.1Eu0.05V1−yMyO4 (M=Nb, P) as new near-ultraviolet excited phosphors were synthesized and their luminescence properties under 365 nm excitation were investigated in detail. It indicated that by doping small amount of P5+ into V5+ sites, the excitation intensity of charge transfer (CT) band of Bi–O (330–400 nm) was greatly improved. By substituting Nb5+ for V5+, both the CT bands of Bi–O and Eu–O (240–320 nm) were significantly enhanced. As a result, the emission intensity of Y0.85Bi0.1Eu0.05V1−yMyO4 (M=Nb, P) could be improved about 90% by doping 5 mol% P5+ and 110% by doping 5 mol% Nb5+. Comparing with the commercial Y2O2S:Eu3+ phosphors, the Y0.85Bi0.1Eu0.05V0.95M0.05O4 (M=Nb, P) phosphors exhibited excellent color purity and much higher brightness. The results showed that these Y0.85Bi0.1Eu0.05V1−yMyO4 (M=Nb, P) phosphors could be considered as promising red phosphors for application in LED.
