Structural, optical and thermal properties of the Ce doped YAG synthesized by solid state reaction method

Abstract Powder phosphor yttrium aluminum garnet (YAG), doped with trivalent cerium (Ce3+), is synthesized by using the solid state reaction method. The formation of YAG and YAG:Ce (cerium-doped yttrium aluminum garnet) was investigated by means of X-ray diffraction (XRD) which shows that the powder is a single phase constituted of grains with sizes of about 70 nm. From the photoluminescence spectra, it was confirmed that the synthesized YAG:Ce3+‏ phosphor emits typical yellow light peaked at around 550 nm under an excitation of 473 nm-wavelength. By using the Photo-Thermal Deflection (PTD) technique, heat transfer modes are studied and, thermal conductivity, thermal diffusivity, specific heat and mean free path are determined and obtained respectively in the order of 12 W m−1 K−1, 2 m2 s−1, 800 J mol−1 and 7.5 A°, which are in good agreement with literature.

[1]  C. Lou,et al.  Enhancing the efficiency of solar cells by down shifting YAG: Ce3+ phosphors , 2015 .

[2]  B. P. Sullivan,et al.  Energy transfer and enriched emission spectrum in Cr and Ce co-doped Y3Al5O12 yellow phosphors , 2008 .

[3]  T. Jüstel,et al.  Synthesis and optical properties of Ce3+-doped Y3Mg2AlSi2O12 phosphors , 2009 .

[4]  Ha-Kyun Jung,et al.  Monodispersed spherical YAG:Ce3+ phosphor particles by one-pot synthesis , 2017 .

[5]  M. Mitrić,et al.  Structural properties and luminescence kinetics of white nanophosphor YAG:Dy , 2015 .

[6]  Mamoru Mitomo,et al.  2-phosphor-converted white light-emitting diodes using oxynitride/nitride phosphors , 2007 .

[7]  S. A. Hassanzadeh-Tabrizi.  Low temperature synthesis and luminescence properties of YAG: Eu nanopowders prepared by modified sol-gel method , 2011 .

[8]  Jerzy Bodzenta,et al.  Analysis of influence of Yb concentration on thermal, elastic, optical and lattice parameters in YAG single crystal , 2009 .

[9]  Mingmei Wu,et al.  Tailored photoluminescence of YAG:Ce phosphor through various methods , 2004 .

[10]  T. Ghrib.  Structural, optical and thermal properties of nanoporous aluminum , 2015 .

[11]  Song Hu,et al.  Transparent YAG:Ce ceramics for WLEDs with high CRI: Ce3+ concentration and sample thickness effects , 2016 .

[12]  Mario Bertolotti,et al.  MEASUREMENTS OF THERMAL CONDUCTIVITY OF DIAMOND FILMS BY PHOTOTHERMAL DEFLECTION TECHNIQUE , 1994 .

[13]  Won Bin Im,et al.  Enhancement of red spectral emission intensity of Y3Al5O12:Ce3+ phosphor via Pr co-doping and Tb substitution for the application to white LEDs , 2007 .

[14]  X. Jing,et al.  Near-Infrared Luminescence of Tb3+-Yb3+ and Ce3+-Yb3+ Co-Doped Y3Al5O12 , 2012 .

[15]  K. Lynn,et al.  Structural and Thermal Properties of Tb, Ce Doped Y2.97Gd0.03Al2Ga3O12 Single Crystals , 2014 .

[16]  S. Yin,et al.  Thermal conductivity of synthetic garnet laser crystals , 2007 .

[17]  Thomas Jüstel,et al.  Rare earth phosphors: fundamentals and applications , 1998 .

[18]  V. Lojpur,et al.  Y3Al5O12:Re3+ (Re=Ce, Eu, and Sm) Nanocrystalline Powders Prepared by Modified Glycine Combustion Method , 2014 .

[19]  Yuhua Wang,et al.  Tunable luminescence Y₃Al₅O₁₂:0.06Ce³⁺, xMn²⁺ phosphors with different charge compensators for warm white light emitting diodes. , 2012, Optics express.

[20]  Jun Lin,et al.  Comparative study on the luminescent properties of Y3Al5O12:RE3+ (RE: Eu, Dy) phosphors synthesized by three methods , 2004 .

[21]  D. Segal.  Chemical synthesis of ceramic materials , 1997 .

[22]  Lei Wang,et al.  Enriching red emission of Y3Al5O12: Ce3+ by codoping Pr3+ and Cr3+ for improving color rendering of white LEDs. , 2010, Optics express.

[23]  T. Ghrib,et al.  Effect of Annealing Process on Porous Aluminium Filled with Graphite , 2014 .

[24]  Chengyi Xu,et al.  Photoluminescence, energy transfer, and thermal stability of BaAl2Si2O8:Bi3+, Tb3+ phosphors for w-LEDs , 2017 .

[25]  Yong-Seog Kim,et al.  Energy transfer-based spectral properties of Tb-, Pr-, or Sm-codoped YAG:Ce nanocrystalline phosphors , 2008 .