| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1488704 | Materials Research Bulletin | 2013 | 5 Pages |
Er3+/Ho3+/Yb3+/Tm3+ co-doped YVO4 phosphors were synthesized by the conventional solid-state reaction. Under 980 nm laser diode excitation, intense red, green and blue up-conversion emissions were observed for the Yb3+/Er3+, Yb3+/Ho3+ and Yb3+/Tm3+ couples in the YVO4 host, respectively, which were due to the successive energy transfer from Yb3+ to Er3+, Ho3+ or Tm3+. Bright white luminescence upon 980 nm near-infrared excitation can be observed for the sample at the optimum chemical composition of YVO4:10%Yb3+/1%Tm3+/0.3%Ho3+/0.2%Er3+. Under different excitation pump powers, the obtained optimal color coordinate (0.323, 0.325) is very close to the standard white light (0.333, 0.333) coordinate.
Graphical abstractEr3+/Ho3+/Yb3+/Tm3+ co-doped YVO4 phosphors were synthesized by the conventional solid-state reaction. Bright white luminescence upon 980 nm near-infrared excitation can be observed for the sample at the optimum chemical composition of YVO4:10%Yb3+/1%Tm3+/0.3%Ho3+/0.2%Er3+.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► YVO4:Er3+, Ho3+, Yb3+, Tm3+ were prepared by the solid-state reaction. ► YVO4:0.2%Er3+/0.3%Ho3+/1%Tm3+/10%Yb3+ as white light phosphor has been determined. ► The chromaticity coordinate of sample VII is measured as (0.3234, 0.3251).
