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

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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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