Broad-band lead halide perovskite quantum dot single-mode lasers

2020 ◽  
Vol 8 (39) ◽  
pp. 13642-13647
Author(s):  
Chun Zhou ◽  
Jie Yu ◽  
Hongxing Dong ◽  
Fanglong Yuan ◽  
Xiaopeng Zheng ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Broad Band ◽  
Visible Region ◽  
Single Mode ◽  
Halide Perovskite ◽  
Lead Halide

We obtained broad-band CQD single-mode lasers across the entire visible region through combining CQDs with a microcavity.

KONDO EFFECT AND SPIN-CHARGE SEPARATION IN QUANTUM DOTS

2001 ◽  
Vol 15 (10n11) ◽  
pp. 1426-1442
Author(s):  
L. I. GLAZMAN ◽  
F. W. J. HEKKING ◽  
A. I. LARKIN
Keyword(s):  
Quantum Dot ◽  
Charge Separation ◽  
Coulomb Blockade ◽  
Kondo Effect ◽  
Broad Band ◽  
Single Mode ◽  
Kondo Temperature ◽  
Average Charge ◽  
Opposite Case ◽  
Anderson Impurity Model

The Kondo effect in a quantum dot is discussed. In the standard Coulomb blockade setting, tunneling between the dot and the leads is weak, the number of electrons in the dot is well-defined and discrete; the Kondo effect may be considered in the framework of the conventional one-level Anderson impurity model. It turns out however, that the Kondo temperature TK in the case of weak tunneling is extremely low. In the opposite case of almost reflectionless single-mode junctions connecting the dot to the leads, the average charge of the dot is not discrete. Surprisingly, its spin may remain quantized: s=1/2 or s=0, depending (periodically) on the gate voltage. Such a "spin-charge separation" occurs because, unlike an Anderson impurity, a quantum dot carries a broad-band, dense spectrum of discrete levels. In the doublet state, the Kondo effect develops with a significantly enhanced TK. Like in the weak-tunneling regime, the enhanced TK exhibits strong mesoscopic fluctuations. The statistics of the fluctuations is universal, and related to the Porter-Thomas statistics of the wave function fluctuations.

Single-Mode Lasers Based on Cesium Lead Halide Perovskite Submicron Spheres

ACS Nano ◽  
2017 ◽  
Vol 11 (11) ◽  
pp. 10681-10688 ◽  
Author(s):  
Bing Tang ◽  
Hongxing Dong ◽  
Liaoxin Sun ◽  
Weihao Zheng ◽  
Qi Wang ◽  
...  
Keyword(s):  
Single Mode ◽  
Halide Perovskite ◽  
Lead Halide

Superfluorescence from lead halide perovskite quantum dot superlattices (Conference Presentation)

2019 ◽  
Author(s):  
Michael Becker ◽  
Gabriele Rainò ◽  
Maryna Bodnarchuk ◽  
Rainer F. Mahrt ◽  
Maksym Kovalenko ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Halide Perovskite ◽  
Lead Halide

Excitonic phenomena in perovskite quantum-dot supercrystals

2018 ◽  
Vol 20 (38) ◽  
pp. 25023-25030 ◽  
Author(s):  
Ilia A. Vovk ◽  
Nikita V. Tepliakov ◽  
Anvar S. Baimuratov ◽  
Mikhail Yu. Leonov ◽  
Alexander V. Baranov ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Two Dimensional ◽  
Halide Perovskite ◽  
Frenkel Excitons ◽  
Lead Halide

The paper presents a first theory of Frenkel excitons in two-dimensional lead halide perovskite quantum-dot supercrystals.

In Situ Inkjet Printing Patterned Lead Halide Perovskite Quantum Dot Color Conversion Films by Using Cheap and Eco‐Friendly Aqueous Inks

Small Methods ◽  
2020 ◽  
pp. 2000889
Author(s):  
Shuchen Shi ◽  
Wenhao Bai ◽  
Tongtong Xuan ◽  
Tianliang Zhou ◽  
Guoyan Dong ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Inkjet Printing ◽  
Halide Perovskite ◽  
Color Conversion ◽  
Lead Halide
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