perovskite quantum dots
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2022 ◽  
Vol 452 ◽  
pp. 214313
Author(s):  
Huiwang Lian ◽  
Yang Li ◽  
S. Saravanakumar ◽  
Huan Jiang ◽  
Zhanjun Li ◽  
...  

2022 ◽  
Vol 124 ◽  
pp. 111981
Author(s):  
Fangzheng Qi ◽  
Xia Shao ◽  
Yu Ma ◽  
Yuanyuan Sun ◽  
Jiawu Zhu ◽  
...  

Technologies ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 10
Author(s):  
Ryota Sato ◽  
Kazuki Umemoto ◽  
Satoshi Asakura ◽  
Akito Masuhara

Organic-inorganic perovskite quantum dots (PeQDs) have attracted attention due to their excellent optical properties, e.g., high photoluminescence quantum yields (PLQYs; >70%), a narrow full width at half maximum (FWHM; 25 nm or less), and color tunability adjusted by the halide components in an entire tunability (from 450 nm to 730 nm). On the other hand, PeQD stability against air, humidity, and thermal conditions has still not been enough, which disturbs their application. To overcome these issues, with just a focus on the air stability, Mn2+ ion passivated perovskite quantum dots (Mn/MAPbBr3 QDs) were prepared. Mn2+ could be expected to contract the passivating layer against the air condition because the Mn2+ ion was changed to the oxidized Mn on PeQDs under the air conditions. In this research, Mn/MAPbBr3 QDs were successfully prepared by ligand-assisted reprecipitation (LARP) methods. Surprisingly, Mn/MAPbBr3 QD films showed more than double PLQY stability over 4 months compared with pure MAPbBr3 ones against the air, which suggested that oxidized Mn worked as a passivating layer. Improving the PeQD stability is significantly critical for their application.


2022 ◽  
pp. 2104577
Author(s):  
Lu Liu ◽  
Adel Najar ◽  
Kai Wang ◽  
Minyong Du ◽  
Shengzhong (Frank) Liu

Nano Letters ◽  
2022 ◽  
Author(s):  
Megha Shrivastava ◽  
Franziska Krieg ◽  
Dipendranath Mandal ◽  
Ajay K. Poonia ◽  
Santu K. Bera ◽  
...  

Author(s):  
Xiaodong Peng ◽  
Cheng Yan ◽  
Fengjun Chun ◽  
Wen Li ◽  
Xiankan Zeng ◽  
...  

ACS Nano ◽  
2022 ◽  
Author(s):  
Zhijing Zhang ◽  
Sushant Ghimire ◽  
Takuya Okamoto ◽  
Bhagyashree Mahesha Sachith ◽  
Jeladhara Sobhanan ◽  
...  

Author(s):  
Minju Kim ◽  
Youngji Kim ◽  
Kiheung Kim ◽  
Wen-Tse Huang ◽  
Ru-Shi Liu ◽  
...  

29-Fold luminescence enhancement of upconversion nanoparticle-sensitized perovskite quantum dots was achieved by implementing a metal–insulator–metal configuration and plasmonic coupling.


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