Carrier Hopping and Relaxation in InAs/GaAs Quantum Dot Heterostructures

Ya Fen Wu; Jiunn Chyi Lee

doi:10.4028/www.scientific.net/AMR.875-877.9

Paper Titles

Synthesis and Application of a Novel Liquid Crystal Monomer 1,4-di-[4-(3-acryloyloxyhexyloxy)benzoyloxy]-2-methyl Benzene
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Carrier Hopping and Relaxation in InAs/GaAs Quantum Dot Heterostructures
p.9

Morphological and Magnetic Properties of Electrodeposited Ni-Ag Alloy Nanowire Arrays in Modified AAO Template
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Durian Peeling Extract Mediated Green Synthesis of Silver Nanoparticles
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Fluorescence and Judd-Ofelt Analysis of Er³⁺ Doped CaF₂ Transparent Ceramic
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Preparation and Characterization of Nitrogen Doped TiO₂ Nanoparticles as an Effective Catalyst in Photodegradation of Phenol under Visible Light
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Cu-Fe/TiO₂ Photocatalyst for Deep Desulfurization Process
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Removal of Alkali in the Red Mud Using CO₂ at Ambient Conditions
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 875-877Carrier Hopping and Relaxation in InAs/GaAs...

Carrier Hopping and Relaxation in InAs/GaAs Quantum Dot Heterostructures

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 875-877)

Pages:

9-13

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.875-877.9

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Online since:

February 2014

Authors:

Ya Fen Wu, Jiunn Chyi Lee

Keywords:

Photoluminescence Spectra, Rate Equation, Self-Assembled Quantum Dot, Thermal Redistribution

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