Luminescence characteristics of the Ce3+-doped garnets: the case of Gd-admixed Y3Al5O12 transparent ceramics
Luminescence characteristics of the Ce3+-doped garnets: the case of Gd-admixed Y3Al5O12 transparent ceramics
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DOI：
10.1364/ome.5.002902
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发表时间：
2015-12-01
影响因子：
2.8
通讯作者：
Wang, Shiwei
中科院分区：
文献类型：
--
作者：
Hu, Song;Qin, Xianpeng;Wang, Shiwei
采用真空固相烧结法制备了Gd 3+含量为0 ~ 80mol%的Ce掺杂（Gd，Y）（3）Al 5 O 12透明陶瓷。用X射线衍射（XRD）分析了其物相组成和结构参数。通过透射光谱、吸收光谱和发光测试，研究了其光学和发光特性。发现Gd ~（3+）离子对石榴石陶瓷的能带结构和Ce ~（3+）的能态有重要影响。平衡的Gd 3+混合到YAG晶格中为磷光体提供了优异的色坐标和CRI，用于暖白色光照明。该研究为石榴石荧光粉的发光调控提供了一种有效的途径。2015美国光学学会Optical Society of America
The Ce-doped (Gd, Y)(3)Al5O12 transparent ceramics with Gd3+ content of 0 to 80 mol% were fabricated using a solid-state sintering method under vacuum. Their phase compositions and structure parameters were checked by X-ray diffraction (XRD). Optical and luminescence characteristics were investigated and thoroughly discussed by transmittance, absorption spectra and luminescence examination. The Gd3+ ions were found of great importance to the band structure of crystal and energy state of Ce3+ in the garnet ceramics. Balanced Gd3+ admixture into the YAG lattice provided excellent color coordinates and CRI for the phosphor for warm white light illumination. This study provides an efficient approach to tailor the luminescence of the garnet phosphors. (C)2015 Optical Society of America