ZnWO4:Eu3+ nanorods: A potential tunable white light-emitting phosphors

White light emission from γ-irradiated Ag/Eu co-doped phosphate glass under NUV light excitation

“…We reported on a new white light emission phosphor from ␥-irradiated Ag/Eu co-doped phosphate glass 65NaPO 3 -30Al (PO 3 ) 3 -5SiO 2 . Absorption and EPR results confirm the appearance of Eu 2+ and silver aggregates (Ag 2 + and Ag 3 2+ ) after ␥-irradiation.…”

“…White light emitting diodes (W-LEDs) received lots of interests because of their real application in substituting fluorescence or incandescent lamps for solid state lighting source over the last two decades [1][2][3][4][5][6]. Compared with the traditional lighting sources, W-LEDs have many advantages such as high efficiency, less energy consumption and longer lifetime [1].…”

Luminescent properties of Na3Gd1−xEux(PO4)2 and energy transfer in these phosphors

“…Today, the WLED market is dominated by phosphor-converted WLEDs normally comprising a 450-470 nm blue InGaN LED chip covered by a yellow phosphor, which is usually made of YAG:Ce 3+ [7][8][9][10][11][12]. However, phosphorconverted WLEDs made by means of blue-LED + yellow phosphor suffer from the drawbacks such as halo effect due to the different emission characteristics of the LEDs (directional) and the phosphors (isotropic) [13], low color rendering index (CRI) and high color temperature caused by lack of red component in the spectra [2,7,[10][11][12]14,15]. White light can also be produced by another method, i.e., using a near ultraviolet (NUV) LED (370-410 nm) to stimulate the mixture of red, green and blue (RGB) phosphors [1][2][3]7,10].…”

Characterizations, structure and optical properties of ZnWO4:Eu nanorods under high temperature

“…[1] It has been widely studied as scintillating materials, photocatalysts, optical fibers, gas sensors, solid state laser host and so on. [2][3][4][5] ZnWO 4 belongs to the divalent transition-metal tungstates of general formula AWO4, which crystallizes in either tetragonal scheelite structure or monoclinic wolframite structure depending on the size of cations A.…”