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

被引:30
|
作者
Ghrib, Taher [1 ]
Al-Otaibi, Amal Lafy [1 ]
Almessiere, Munirah Abdullah [1 ]
Ashahri, Amel [1 ]
Masoudi, Imen [1 ]
机构
[1] Univ Dammam, Coll Sci Dammam, LPA, Dammam, Saudi Arabia
关键词
Ce doped YAG; Photo-luminescence (PL); Photo-Thermal Deflection (PTD) technique; ENERGY-TRANSFER; EMISSION; PHOSPHOR; PHOTOLUMINESCENCE; CONDUCTIVITY;
D O I
10.1016/j.tca.2017.04.010
中图分类号
O414.1 [热力学];
学科分类号
摘要
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 m(2) s(-1), 800 J mol(-1) and 7.5 angstrom, which are in good agreement with literature.
引用
收藏
页码:35 / 39
页数:5
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