Improving the Stability of α-CsPbI3 Nanocrystals in Extreme Conditions Facilitated by Mn2+ Doping

被引：22
|
作者：
Ji, Yu [1 ,2 ]
Zhang, Jian-Bin [1 ,2 ]
Shen, Hao-Ran [1 ,2 ]
Su, Zhan [1 ,2 ]
Cui, Hao [1 ,2 ]
Lan, Tao [1 ,2 ]
Wang, Jia-Qian [1 ,2 ]
Chen, Yu-Hui [1 ,2 ]
Liu, Lihui [1 ,2 ]
Cao, Kun [1 ,2 ]
Shen, Wei [1 ,2 ]
Chen, Shufen [1 ,2 ]
机构：
[1] Nanjing Univ Posts & Telecommun NUPT, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Inst Adv Mat IAM, Key Lab Organ Elect & Informat Displays, Nanjing 210023, Peoples R China
[2] Nanjing Univ Posts & Telecommun NUPT, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Inst Adv Mat IAM, Jiangsu Key Lab Biosensors, Nanjing 210023, Peoples R China
来源：
ACS OMEGA | 2021年 / 6卷 / 21期
基金：
中国国家自然科学基金;
关键词：
HALIDE PEROVSKITE NANOCRYSTALS; QUANTUM DOTS; EMISSION; CSPBX3; BR;
D O I：
10.1021/acsomega.1c01383
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The wide application of CsPbI3 nanocrystals (NCs) is limited due to their poor phase stability. We reported that Mn2+-CsPbI3 NCs have better optical performance and phase stability. With a suitable Mn/Pb ratio (5.0%), Mn2+-doped alpha-CsPbI3 NCs exhibited the best stability under UV irradiation, ethanol addition, and heating. Under UV irradiation and addition of ethanol, photoluminescence (PL) intensities of CsPbI3 NCs could be only preserved up to 35% (22 min UV irradiation) and 10% (ethanol addition), respectively, whereas, Mn2+-doped CsPbI3 (5.0%) exhibited much improved stability, and their intensities could be preserved up to 70% (22 min UV) and 58% (ethanol), respectively. It should be noted that crystal-phase stability could be maintained at least 7 h even at 120 degrees C. We believe that the improved stability in extreme conditions for alpha-CsPbI3 NCs can be further applied to optoelectronic devices.
引用
收藏
页码：13831 / 13838
页数：8
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