Influence of Al on the local structure of Nd-doped TiO2 thin films: A combined luminescence and X-ray absorption fine structure analysis

被引：7

作者：

Murayama, Mariko ^{[1
,4
,5
]}

Yoda, Kensaku ^{[1
]}

Komuro, Shuji ^{[2
]}

Nitani, Hiroaki ^{[3
]}

Crowe, Iain F. ^{[4
,5
]}

Zhao, Xinwei ^{[1
]}

机构：

[1] Tokyo Univ Sci, Dept Phys, Tokyo 1628601, Japan

[2] Toyo Univ, Fac Engn & Sci, Kawagoe, Saitama 3508585, Japan

[3] High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[4] Univ Manchester, Photon Sci Inst, Manchester M13 9PL, Lancs, England

[5] Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2019年 / 246卷

关键词：

Luminescence; Rare earth; Semiconductor; XAFS; Laser ablation; IONS; PHOTOLUMINESCENCE;

D O I：

10.1016/j.mseb.2019.05.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Rare-earth related optical emission in oxide semiconductors is strongly influenced by the local co-ordination around the rare-earth centres. In this contribution, we examine the effect of aluminium co-doping on the local fine structure of neodymium-doped titanium dioxide (TiO2:Nd, TiO2:Nd-Al) thin films with single-phase anatase structure, via luminescence and X-ray absorption fine structure (XAFS) measurements. Increasing the concentration of Al in these materials leads to the co-ordination around Nd3+ ions being distorted, which in turn leads to an enhanced photoluminescence (PL) intensity. We explain this in terms of a distortion of the nearest neighbour oxygen bonds with Nd3+.

引用

页码：49 / 52

页数：4

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