Luminescence properties of CsPbBr3:Mn nanocrystals

被引：4

作者：

He, Wencai ^{[1
]}

Zhang, Qiqi ^{[1
]}

Qi, Yifang ^{[1
]}

Xiong, Jian ^{[1
]}

Ray, Paresh ^{[1
]}

Pradhan, Nihar Ranjan ^{[1
]}

Shahbazyan, Tigran V. ^{[1
]}

Han, Fengxiang ^{[1
]}

Dai, Qilin ^{[1
]}

机构：

[1] Jackson State Univ, Dept Chem Phys & Atmospher Sci, Jackson, MS 39217 USA

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2021年 / 23卷 / 04期

基金：

美国国家科学基金会;

关键词：

CsPbBr3; Energy transfer; Luminescence; Photodetector; Mn; Nanocrystals; PEROVSKITE QUANTUM DOTS; STABILITY;

D O I：

10.1007/s11051-021-05184-7

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mn-doped CsPbBr3 nanocrystals with sizes of similar to 10 nm are synthesized by hot injection method via the addition of HBr in the precursor. The sizes and crystal structure are not influenced by the addition of HBr. The photoluminescence (PL) mechanism of CsPbBr3 is modified by HBr, leading to the PL peak shift to 433 nm, which is not the regular PL of CsPbBr3. The irregular CsPbBr3 nanocrystals prepared with HBr enable the Mn doping, leading to the red emission of Mn. The PL energy transfer from CsPbBr3 to Mn is studied as a function of HBr. The energy transfer of similar to 90% is achieved in this system. In addition, the crystallinity of the CsPbBr3 nanocrystals is also improved by the HBr, leading to better photodetector device performance.

引用

页数：9

共 43 条

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