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The distribution of rare earth ions in a γ-Ga2O3 nanocrystal-silicate glass composite and its influence on the photoluminescence properties
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2018-02-06 00:00:00 , DOI: 10.1039/c8tc00325d
Zhigang Gao 1, 2, 3, 4, 5 , Xiaosong Lu 1, 2, 3, 4, 5 , Yushi Chu 1, 2, 3, 4, 5 , Shu Guo 4, 5, 6, 7 , Lu Liu 1, 2, 3, 4, 5 , Yinyao Liu 5, 8, 9, 10, 11 , Shiyu Sun 5, 8, 9, 10, 11 , Jing Ren 1, 2, 3, 4, 5 , Jun Yang 1, 2, 3, 4, 5
Affiliation  

The distribution of rare earth ions (REs: Yb3+, Er3+, Eu3+ and Nd3+) in a nanostructured silicate glass ceramic containing a wide bandgap γ-Ga2O3 nanospinel is revealed using well-prepared electron-transparent samples and an analytical transmission electron microscope (TEM). It is found that the REs accumulate preferentially in the γ-Ga2O3 nanocrystals formed, and the REs of small ionic radii (Yb3+ and Er3+) exhibit higher doping efficiency in the nanocrystals than those of larger ionic radii (Eu3+ and Nd3+). The incorporation of REs into the γ-Ga2O3 nanospinels leads to a significant modification of their photoluminescence characteristics including the emission intensity, peak wavelength, bandwidth and decay lifetime of the dopants. The possible causes are discussed.

中文翻译:

稀土离子在分布γ -镓2 ö 3纳米晶体硅酸盐玻璃复合及其对所述光致发光性能的影响

稀土离子(RES:Yb组成的分布3+,铒3+,Eu的3+和Nd 3+)在纳米结构的硅酸盐玻璃陶瓷含有宽带隙γ -镓2 ö 3 nanospinel使用精心准备的电子-揭示透明样品和分析型透射电子显微镜(TEM)。可知的RE中优先积累γ -镓2层ö 3形成的纳米晶体,以及小离子半径的RE中(镱3+和Er 3+)表现出在纳米晶体比大离子半径的更高的掺杂效率(EU 3+和Nd 3+)。RE的掺入γ -镓2所ö 3 nanospinels导致的光致发光的特性,包括发光强度,峰值波长,带宽和掺杂剂的衰减寿命一个显著修饰。讨论了可能的原因。
更新日期:2018-02-06
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