Fabrication of oriented oxide films from exfoliated yttrium hydroxide layers: Enhanced photoluminescence and unexplored behavior of energy transfer

被引：21

作者：

Huang, Junjie ^{[1
,2
]}

Zhang, Tie ^{[1
]}

Ren, Ke ^{[1
]}

Zhang, Rui ^{[1
,2
]}

Wu, Xiaoli ^{[1
,2
]}

Li, Ji-guang ^{[3
,4
]}

机构：

[1] Guilin Univ Technol, Coll Mat Sci & Engn, Guilin 541004, Peoples R China

[2] Univ Technol, Collaborat Innovat Ctr Explorat Hidden Nonferrous, Guilin 541004, Peoples R China

[3] Northeastern Univ, Sch Met & Mat, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110004, Liaoning, Peoples R China

[4] Natl Inst Mat Sci, Adv Mat Proc Unit, Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 763卷

基金：

中国国家自然科学基金;

关键词：

Layered yttrium hydroxide; Nanosheets; Films; Luminescence; RARE-EARTH HYDROXIDES; GD; LN; TRANSFORMATION; NANOSHEETS; FAMILY; EU; ER; SM; DY;

D O I：

10.1016/j.jallcom.2018.06.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Layered yttrium hydroxide (LYH) nanospalates doped with different activators (Tb3+ and/or Eu3+) were hydrothermally synthesized and then successfully delaminated into ultrathin nanosheets of down to 1-3 nm thickness via intercalation reactions and mechanical agitation. Using the LYH nanosheets, highly [001] oriented yttrium hydroxide films were constructed through spin-coating. Based on the quasitopotactic transformation from yttrium hydroxide to cubic Y2O3, [111] oriented oxide films were achieved by proper annealing. For the highly oriented Y2O3: 0.05Eu film, the enhanced photoluminescence was obtained compared with the powder form due to the higher exposure of (222) facets. Through adjusting the incorporated activation ions, films with different color were obtained, and energy transfer from Tb3+ to Eu3+ was observed for the alternatively multilayer film, although Eu3+ and Tb3+ were located in different layers. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：815 / 821

页数：7

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