Synthesis and characterization of YNbTiO6:Dy3+ phosphor

KCa4(BO3)3:Ln3+ (Ln = Dy, Eu, Tb) phosphors for near UV excited white–light–emitting diodes

“…Particularly, the Dy 3+ ion emission show strong crystal field effects, therefore intensity of hypersensitive yellow color emission from the transition 4 F 9/2 → 6 H 13/2 is strongly influenced by the host environment, compared to the other non-hypersensitive emission band 4 F 9/2 → 6 H 15/2 . 11,37,38 Hence, it is interesting to observe such host matrix influence on the near-white light generation from Dy 3+ -doped phosphors directly by fine tuning the ratio of these yellow and blue prominent emission intensities. 37,38 We have also developed Eu 3+ and Tb 3+ singly and co-doped systems for red and green emission components for the generation of white-light.…”

“…11,37,38 Hence, it is interesting to observe such host matrix influence on the near-white light generation from Dy 3+ -doped phosphors directly by fine tuning the ratio of these yellow and blue prominent emission intensities. 37,38 We have also developed Eu 3+ and Tb 3+ singly and co-doped systems for red and green emission components for the generation of white-light. Nevertheless, these combinations can be interesting candidates to combine with UV/NUV light for realizing white-light with suitable color rendering index.…”

Concentration-dependent luminescence and energy transfer of flower-like Y2(MoO4)3:Dy3+ phosphor

“…Over the past several decades, rear earth ions (RE 3+ ) doped phosphors have attracted much attention due to their potential applications in plasma display panels (PDPs), field emission displays (FEDs), fluorescent lamps and so on [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. In recent years, with the technical mature of GaN-based LEDs, it is possible to achieve solid state illumination by combining short wavelength GaN-based LED chips with tricolor phosphors.…”

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].…”