Incorporating Rare-Earth Terbium(III) Ions into Cs2 AgInCl6 :Bi Nanocrystals toward Tunable Photoluminescence.,Angewandte Chemie International Edition

当前位置： X-MOL 学术 › Angew. Chem. Int. Ed. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Incorporating Rare-Earth Terbium(III) Ions into Cs2 AgInCl6 :Bi Nanocrystals toward Tunable Photoluminescence.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-04-23 , DOI: 10.1002/anie.202004562
Ying Liu ₁ , Ximing Rong ₂ , Mingze Li ₁ , Maxim S Molokeev _{3,

4,

5} , Jing Zhao ₁ , Zhiguo Xia _{1,

6}

Affiliation

The incorporation of impurity ions or doping is a promising method for controlling the electronic and optical properties and the structural stability of halide perovskite nanocrystals (NCs). Herein, we establish relationships between rare‐earth ions doping and intrinsic emission of lead‐free double perovskite Cs₂AgInCl₆ NCs to impart and tune the optical performances in the visible light region. Tb³⁺ ions were incorporated into Cs₂AgInCl₆ NCs and occupied In³⁺ sites as verified by both crystallographic analyses and first‐principles calculations. Trace amounts of Bi doping endowed the characteristic emission (⁵D₄→⁷F_6‐3) of Tb³⁺ ions with a new excitation peak at 368 nm rather than the single characteristic excitation at 290 nm of Tb³⁺. By controlling Tb³⁺ ions concentration, the emission colors of Bi‐doped Cs₂Ag(In_1−xTb_x)Cl₆ NCs could be continuously tuned from green to orange, through the efficient energy‐transfer channel from self‐trapped excitons to Tb³⁺ ions. Our study provides the salient features of the material design of lead‐free perovskite NCs and to expand their luminescence applications.

中文翻译：

将稀土Ter离子掺入Cs2 AgInCl6：Bi纳米晶体中以实现可调光致发光。

掺入杂质离子或掺杂是控制卤化物钙钛矿纳米晶体（NCs）的电子和光学性质以及结构稳定性的有前途的方法。在此，我们建立了稀土离子掺杂与无铅双钙钛矿Cs ₂ AgInCl ₆ NC的本征发射之间的关系，以赋予和调整可见光区域的光学性能。Tb ³⁺离子被掺入Cs ₂ AgInCl ₆ NCs中，并占据了³⁺位，这通过晶体学分析和第一性原理计算都得到了验证。微量的Bi掺杂赋予了特征发射（⁵ D ₄ → ⁷Tb ³⁺离子的F _6-3）具有一个在368 nm处的新激发峰，而不是在290 nm的Tb ³⁺处的单特征激发。通过控制Tb ³⁺离子的浓度，可以通过自陷激子的有效能量传递通道，将Bi掺杂的Cs ₂ Ag（In _1-_x Tb _x）Cl ₆ NCs的发射颜色连续地从绿色变为橙色。 Tb ³⁺离子。我们的研究提供了无铅钙钛矿NC的材料设计的显着特征，并扩展了其发光应用。

更新日期：2020-07-01

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11