Multicolour and nearly white light emission in YP0.8V0.2O4:Sm3+ nanorods: controlled energy transfer
| Title | Multicolour and nearly white light emission in YP0.8V0.2O4:Sm3+ nanorods: controlled energy transfer |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | Singh, NS |
| Secondary Authors | Wangkhem, R |
| Tertiary Authors | Yaba, T |
| Subsidiary Authors | Devi, S, Luwang, MN, Yaiphaba, N, Devi, HS, Singh, TD |
| Journal | Journal of Alloys and Compounds |
| Volume | 726 |
| Pagination | 1161-1167 |
| Date Published | DEC |
| Type of Article | Journal Article |
| Keywords | Energy Transfer, Luminescence, Multicolor, Nanorod |
| Abstract | Nanorods of YP0.8V0.2O4:Sm³⁺ have been synthesized under hydrothermal conditions. Substitution of vanadium (V⁵⁺) sites in YVO4 by phosphorus ions (P⁵⁺) has been confirmed by Fourier transform infrared spectroscopy, X-ray diffraction and transmission electron microscopy. Careful selection of Sm³⁺ concentration in YP0.8V0.2O4 enables to achieve the controlled energy transfer from the VO4³⁻ absorption to the excited states of Sm³⁺ ions. The controlled energy transfer has been confirmed from the steady state luminescence and decay lifetime studies of VO4³⁻ emission. With the controlled retention of VO4³⁻ emission, tuning of light emission from the singly (Sm³⁺) doped YP0.8V0.2O4 nanorods is realized. At a particular doping concentration of Sm³⁺ (1.25 at.%), a nearly white light emission is observed. The quantum yield of this nearly white light emission is found to be ∼28%. Tunability of the light and white light emission are supported by CIE chromaticity. The energy transfer efficiency from the VO4³⁻ absorption to the excited states of Sm³⁺ ion in YP0.8V0.2O4 reaches upto ∼86% with the doping concentration of 2.25 at.%. |
| DOI | 10.1016/j.jallcom.2017.08.099 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 3.014 |
Divison category:
Chemical Engineering & Process Development