pbs quantum dots
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Author(s):  
Shilin Liu ◽  
Shikai Yan ◽  
Zhuoya Zhu ◽  
Zhiwei Zhao ◽  
Elias Emeka Elemike ◽  
...  

2022 ◽  
Vol 20 (2) ◽  
pp. 021603
Author(s):  
Wei Wang ◽  
Qinpeng Chen ◽  
Yifei Zhao ◽  
Yakun Le ◽  
Shengda Ye ◽  
...  

Author(s):  
Kohki MUKAI ◽  
Kosuke Ikeda ◽  
Reo Hatta

Abstract Increasing the thickness of the quantum dot silica coating layer reduces monodispersity and shape symmetry. This paper reports three effective ways to solve this problem and achieve a large silica-coated QDs, i.e., proper silanization on the QD surface, control of reverse micelle size by adjusting the amount of QD solvent, and two-step formation of silica shell. Proper substitution of ligands on the QD surface in the early stages of silica shell formation was important for uniform coating reaction. An amount of toluene as QD solvent determined the size of reverse micelles during the silica shell formation. There was an optimum combination of inverse micelle size and silica shell size to obtain silica-coated QDs with good monodispersity and high shape symmetry. We succeeded in growing the thick silica shell with expanding reverse micelle size by additionally supplying toluene with the raw material using the optimum silica-coated QDs as growth nucleus


2021 ◽  
Author(s):  
Evelyn B. Diaz-Cruz ◽  
E. Regalado-Perez ◽  
Jorge Cruz-Gomez ◽  
X. Mathew ◽  
F. J. De Moure-Flores ◽  
...  

2021 ◽  
Vol 119 (19) ◽  
pp. 192103
Author(s):  
Mithun Bhowmick ◽  
Akhilesh Kumar Singh ◽  
Puspendu Barik ◽  
Haowen Xi ◽  
Bruno Ullrich

2021 ◽  
Vol 2065 (1) ◽  
pp. 012018
Author(s):  
Yingxiang Yang ◽  
Hongbin Pu ◽  
Xu Bei ◽  
Chunlan Chen ◽  
Min Wang ◽  
...  

Abstract The photoelectric characteristic of ITO/PbS quantum dots (QDs)/Al structure based single and hybrid iodine ions(I−) passivated PbS QDs have been investigated. The ITO/PbS QDs/Al structure with hybrid I− passivation have demonstrated a high light dark ratio of 565.5 at -2V. It is the result of removing more organic ligands on the surface of PbS QDs and introducing larger amount of I−. This work demonstrates that the hybrid I− passivated process has great potential in the performance improvement of PbS QDs based photovoltaic device.


Nano Express ◽  
2021 ◽  
Author(s):  
Ali W. Al-Ani ◽  
Francesco Zamberlan ◽  
Lenny Ferreira ◽  
Tracey D. Bradshaw ◽  
Neil R. Thomas ◽  
...  

Author(s):  
Eric R. Kennehan ◽  
Kyle T. Munson ◽  
Christopher Grieco ◽  
Grayson S. Doucette ◽  
Ashley R. Marshall ◽  
...  

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