Control Of The Anisotropic Exchange Splitting Of Individual InAs/GaAs Quantum Dots With An In-Plane Electric Field

2005 ◽  
Author(s):  
K. Kowalik
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Exchange Splitting ◽  
Anisotropic Exchange

Anisotropic exchange splitting of excitons affected by ΓX mixing in (In,Al)As/AlAs quantum dots: Microphotoluminescence and macrophotoluminescence measurements

2019 ◽  
Vol 100 (20) ◽  
Author(s):  
J. Rautert ◽  
M. V. Rakhlin ◽  
K. G. Belyaev ◽  
T. S. Shamirzaev ◽  
A. K. Bakarov ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Exchange Splitting ◽  
Anisotropic Exchange

scholarly journals Dark-level trapping, lateral confinement, and built-in electric field contributions to the carrier dynamics in c-plane GaN/AlN quantum dots emitting in the UV range

2021 ◽  
Vol 129 (5) ◽  
pp. 054301
Author(s):  
M. Hrytsaienko ◽  
M. Gallart ◽  
M. Ziegler ◽  
O. Crégut ◽  
S. Tamariz ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Carrier Dynamics ◽  
Lateral Confinement ◽  
Uv Range

High-performance near-infrared photodetectors based on C3N quantum dots integrated with single-crystal graphene

2021 ◽  
Author(s):  
Yun Zhao ◽  
Xiaoqiang Feng ◽  
Menghan Zhao ◽  
Xiaohu Zheng ◽  
Zhiduo Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Single Crystal ◽  
High Performance ◽  
Near Infrared ◽  
Fast Response ◽  
Local Electric Field ◽  
Infrared Photodetectors ◽  
Photocurrent Response

Employing C3N QD-integrated single-crystal graphene, photodetectors exhibited a distinct photocurrent response at 1550 nm. The photocurrent map revealed that the fast response derive from C3N QDs that enhanced the local electric field near graphene.

ChemInform Abstract: Electric-Field Controlled Ferromagnetism in MnGe Magnetic Quantum Dots

ChemInform ◽  
2011 ◽  
Vol 43 (1) ◽  
pp. no-no
Author(s):  
Faxian Xiu ◽  
Yong Wang ◽  
Jin Zou ◽  
Kang L. Wang
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Magnetic Quantum Dots

Influence of electric field on the properties of the polymer stabilized luminescent quantum dots in aqueous solutions

2016 ◽  
Vol 176 ◽  
pp. 65-70 ◽  
Author(s):  
Irina S. Zharkova ◽  
Natalia E. Markina ◽  
Alexey V. Markin ◽  
Daniil D. Drozd ◽  
Elena S. Speranskaya ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Aqueous Solutions ◽  
Polymer Stabilized ◽  
Luminescent Quantum Dots

scholarly journals Photoluminescence of CdSe/ZnS quantum dots in nematic liquid crystals in electric fields

2018 ◽  
Vol 9 ◽  
pp. 1544-1549 ◽  
Author(s):  
Margarita A Kurochkina ◽  
Elena A Konshina ◽  
Daria Khmelevskaia
Keyword(s):  
Quantum Dots ◽  
Liquid Crystals ◽  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Electric Fields ◽  
Dielectric Anisotropy ◽  
Vertical Position ◽  
Decay Times ◽  
Pl Intensity

We have experimentally investigated the effect of the reorientation of a nematic liquid crystal (LC) in an electric field on the photoluminescence (PL) of CdSe/ZnS semiconductor quantum dots (QDs). To the LC with positive dielectric anisotropy, 1 wt % QDs with a core diameter of 5 nm was added. We compared the change of PL intensity and decay times of QDs in LC cells with initially planar or vertically orientated molecules, i.e., in active or passive LC matrices. The PL intensity of the QDs increases four-fold in the active LC matrix and only 1.6-fold in the passive LC matrix without reorientation of the LC molecules. With increasing electric field strength, the quenching of QDs luminescence occurred in the active LC matrix, while the PL intensity did not change in the passive LC matrix. The change in the decay time with increasing electric field strength was similar to the behavior of the PL intensity. The observed buildup in the QDs luminescence can be associated with the transfer of energy from LC molecules to QDs. In a confocal microscope, we observed the increase of particle size and the redistribution of particles in the active LC matrix with the change of the electric field strength. At the same time, no significant changes occurred in the passive LC matrix. With the reorientation of LC molecules from the planar in vertical position in the LC active matrix, quenching of QD luminescence and an increase of the ion current took place simultaneously. The obtained results are interesting for controlling the PL intensity of semiconductor QDs in liquid crystals by the application of electric fields.

scholarly journals Electric field induced tuning of electronic correlation in weakly confining quantum dots

2021 ◽  
Vol 104 (16) ◽  
Author(s):  
Huiying Huang ◽  
Diana Csontosová ◽  
Santanu Manna ◽  
Yongheng Huo ◽  
Rinaldo Trotta ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Electronic Correlation
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