02054nas a2200265   4500008004100000245013800041210006900179260000800248300001400256490000800270520118500278653002001463653001701483653001501500653001201515100001601527700001701543700001301560700001301573700001901586700001701605700001601622700001801638856013201656       2017                        eng d00aMulticolour and nearly white light emission in YP<inf>0.8</inf>V<inf>0.2</inf>O<inf>4</inf>:Sm3+ nanorods: controlled energy transfer0 aMulticolour and nearly white light emission in YPinf08infVinf02i  cDEC  a1161-11670 v7263 aNanorods 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.%. 

10aEnergy Transfer10aLuminescence10aMulticolor10aNanorod1 aSingh, N.S.1 aWangkhem, R.1 aYaba, T.1 aDevi, S.1 aLuwang, M., N.1 aYaiphaba, N.1 aDevi, H., S1 aSingh, T., D.  uhttps://library.ncl.res.in/content/multicolour-and-nearly-white-light-emission-yp08v02o4sm3-nanorods-controlled-energy-transfer