Carrier dynamics in modulation-doped quantum dots

J Siegert, S Marcinkevičius, QX Zhao - Physical Review B, 2005 - APS
Photoexcited carrier dynamics was studied in n and p modulation-doped self-assembled In
As∕ Ga As quantum dots by means of time-resolved photoluminescence with excitation and …

[PDF][PDF] Electronic and optical properties of quantum dots and wires

O Stier - 2005 - depositonce.tu-berlin.de
The electronic and optical properties of strained semiconductor quantum wires and dots are
investigated theoretically, taking into account their shapes and chemical compositions in a …

Near-red emission from site-controlled pyramidal InGaN quantum dots

V Pérez-Solórzano, A Gröning, M Jetter… - Applied Physics …, 2005 - pubs.aip.org
We have fabricated InGaN nanostructures on top of GaN hexagonal pyramids by selective
metalorganic vapor-phase epitaxy. With this approach, we are able to exactly control the …

Time-resolved and time-integrated photoluminescence analysis of state filling and quantum confinement of silicon quantum dots

L Van Dao, X Wen, MTT Do, P Hannaford… - Journal of Applied …, 2005 - pubs.aip.org
In this paper we report studies of the optical properties of silicon quantum dot structures.
From time-resolved and time-integrated photoluminescence measurements we investigate …

Dependence of the electronic structure of self-assembled (In, Ga) As∕ GaAs quantum dots on height and composition

GA Narvaez, G Bester, A Zunger - Journal of applied physics, 2005 - pubs.aip.org
While electronic and spectroscopic properties of self-assembled In 1− x Ga x As∕ Ga As
dots depend on their shape, height, and alloy compositions, these characteristics are often …

Temperature-dependent photoluminescence of self-assembled (In, Ga) As quantum dots on GaAs (100): carrier redistribution through low-energy continuous states

T Mano, R Nötzel, Q Gong, T Lippen… - Japanese journal of …, 2005 - iopscience.iop.org
Temperature-dependent photoluminescence (PL) studies of an ensemble of self-assembled
(In, Ga) As quantum dots (QDs) on GaAs (100) provide insight into the nature of the …

Cathodoluminescence imaging and spectroscopy of excited states in InAs self-assembled quantum dots

S Khatsevich, DH Rich, ET Kim… - Journal of applied …, 2005 - pubs.aip.org
We have examined state filling and thermal activation of carriers in buried InAs self-
assembled quantum dots (SAQDs) with excitation-dependent cathodoluminescence (CL) …

Thermal emission and band-filling effects on the photoluminescence rise time of InGaAs/InAs/GaAs quantum dots

A Melliti, MA Maaref, B Sermage, J Bloch… - Physica E: Low …, 2005 - Elsevier
In this paper, we present an experimental study of the thermal emission and band-filling
effects on the rise time in high-quality InGaAs/InAs/GaAs quantum dots emitting at 1.2 μm at …

Effects of Si-doped GaAs layer on optical properties of InAs quantum dots

YM Park, YJ Park, KM Kim, JI Lee, KH Yoo - Physica E: Low-dimensional …, 2005 - Elsevier
We have investigated the optical properties of InAs self-assembled quantum dots (SAQDs)
with the Si-doped GaAs barrier layer. Two types of samples are fabricated according to the …

Electroreflectance spectroscopy in self-assembled quantum dots: lens symmetry

AH Rodríguez, C Trallero-Giner, M Muñoz… - Physical Review B, 2005 - APS
Modulated electroreflectance spectroscopy Δ R∕ R of semiconductor self-assembled
quantum dots is investigated. The structure is modeled as dots with lens shape geometry …