Photoluminescence Spectra of the CdSe/ZnS Quantum Dot Doped Polymethylmethacrylate Material

2013 ◽  
Vol 33 (9) ◽  
pp. 0906003
Author(s):  
程成 Cheng Cheng ◽  
吴兹起 Wu Ziqi
Keyword(s):  
Quantum Dot ◽  
Photoluminescence Spectra

Quantum-dot-like composition fluctuations in near-field magneto-photoluminescence spectra of InGaAsN alloys

2002 ◽  
Author(s):  
Alexander M. Mintairov ◽  
P. A. Blagnov ◽  
James L. Merz ◽  
Victor M. Ustinov ◽  
A. S. Vlasov ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Near Field ◽  
Photoluminescence Spectra ◽  
Composition Fluctuations

Carrier Hopping and Relaxation in InAs/GaAs Quantum Dot Heterostructures

2014 ◽  
Vol 875-877 ◽  
pp. 9-13
Author(s):  
Ya Fen Wu ◽  
Jiunn Chyi Lee
Keyword(s):  
Energy Level ◽  
Quantum Dot ◽  
Temperature Dependence ◽  
Thermal Emission ◽  
Carrier Dynamics ◽  
Photoluminescence Spectra ◽  
Discrete Energy ◽  
Discrete Energy Level ◽  
Size Uniformity ◽  
Gaas Quantum Dot

We investigate the effect of carrier dynamics on the temperature dependence of photoluminescence spectra from InAs/GaAs quantum dot heterostructures with different dot size uniformity. Intersublevel relaxation lifetimes and carrier transferring mechanisms are simulated using a model based on carriers relaxing and thermal emission of each discrete energy level in the quantum dot system. Calculated relaxation lifetimes are decreasing with temperature and have larger values for sample with lower dot size uniformity. In the quantitative discussion of carrier dynamics, the influence of thermal redistribution on carriers relaxing process of quantum dot system is demonstrated by our model.

scholarly journals Dominance of charged excitons in single-quantum-dot photoluminescence spectra

2002 ◽  
Vol 66 (4) ◽  
Author(s):  
M. Lomascolo ◽  
A. Vergine ◽  
T. K. Johal ◽  
R. Rinaldi ◽  
A. Passaseo ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Photoluminescence Spectra ◽  
Single Quantum ◽  
Single Quantum Dot

Temperature and Excitation Dependence of Photoluminescence Spectra of InAs/GaAs Quantum Dot Heterostructures

2007 ◽  
Vol 6 (5) ◽  
pp. 492-496 ◽  
Author(s):  
Tzer-En Nee ◽  
Ya-Fen Wu ◽  
Jiunn-Chyi Lee ◽  
Jen-Cheng Wang
Keyword(s):  
Quantum Dot ◽  
Photoluminescence Spectra ◽  
Gaas Quantum Dot

scholarly journals Effects of an External Magnetic Field on the Interband and Intraband Optical Properties of an Asymmetric Biconvex Lens-Shaped Quantum Dot

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 60
Author(s):  
Mher A. Mkrtchyan ◽  
David B. Hayrapetyan ◽  
Eduard M. Kazaryan ◽  
Hayk A. Sarkisyan ◽  
Maxim Ya. Vinnichenko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
External Magnetic Field ◽  
Quantum Dot ◽  
Harmonic Generation ◽  
Third Harmonic Generation ◽  
Photoluminescence Spectra ◽  
Third Harmonic ◽  
Different Temperatures ◽  
Linear And Nonlinear

The theoretical investigation of interband and intraband transitions in an asymmetric biconvex lens-shaped quantum dot are considered in the presence of an external magnetic field. The selection rules for intraband transitions are obtained. The behaviors of linear and nonlinear absorption and photoluminescence spectra are observed for different temperatures and magnetic field strengths. The second and third harmonic generation coefficients as a function of the photon energy are examined both in the absence and presence of an external magnetic field.

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