Inhibited carrier transfer in ensembles of isolated quantum dots

C Lobo, R Leon, S Marcinkevicius, W Yang, PC Sercel… - Physical Review B, 1999 - APS
We report significant differences in the temperature-dependent and time-resolved
photoluminescence (PL) from low and high surface density In x Ga 1− x As/GaAs quantum …

Excited-state radiative lifetimes in self-assembled quantum dots obtained from state-filling spectroscopy

S Raymond, X Guo, JL Merz, S Fafard - Physical Review B, 1999 - APS
Studying a uniformly excited ensemble of InAs islands, the emission intensities of the
allowed radiative transitions are modeled in the state-filling limit for pulsed and steady-state …

Optically induced bistability in the mobility of a two-dimensional electron gas coupled to a layer of quantum dots

AJ Shields, MP O'Sullivan, I Farrer, DA Ritchie… - Applied physics …, 1999 - pubs.aip.org
We report a bistability in the resistance of a GaAs/AlGaAs modulation doped field effect
transistor in which a layer of InAs self-organized quantum dots has been grown near the …

The influence of inter-diffusion on electron states in quantum dots

JA Barker, EP O'Reilly - Physica E: Low-dimensional Systems and …, 1999 - Elsevier
We calculate the variation of the potential and confinement energy due to inter-diffusion of a
spherical InxGa1− xAs quantum dot embedded in GaAs. The potential drops off more quickly …

Carrier capture and escape in quantum dots: Effects of intermixing

S Marcinkevičius, R Leon - Physical Review B, 1999 - APS
We have investigated photoexcited carrier dynamics in as-grown and intermixed In x Ga 1−
x A s/G a A s quantum dots and quantum wells by time-resolved photoluminescence with …

Emission of electrons from the ground and first excited states of self-organized InAs/GaAs quantum dot structures

PN Brunkov, AR Kovsh, VM Ustinov… - Journal of electronic …, 1999 - Springer
Capacitance-and conductance-voltage studies have been carried out on Schottky barrier
structures containing a sheet of self-organized InAs quantum dots. The dots are formed in …

Ensemble interactions in strained semiconductor quantum dots

R Leon, S Marcinkevičius, XZ Liao, J Zou… - Physical Review B, 1999 - APS
Large variations in In x Ga 1− x As quantum dot concentrations were obtained with
simultaneous growths on vicinal GaAs [001] substrates with different surface step densities …

Spatially resolved spectroscopy on single self-assembled quantum dots

A Zrenner, M Markmann, E Beham, F Findeis… - Journal of electronic …, 1999 - Springer
We report about spatially resolved experiments on self-assembled InGaAs quantum dots.
Single quantum dots can be investigated by using STM-induced luminescence …

Time-resolved photoluminescence and carrier dynamics in vertically-coupled self-assembled quantum dots

I Gontijo, GS Buller, JS Massa, AC Walker… - Japanese journal of …, 1999 - iopscience.iop.org
The relaxation mechanisms of an array of 10 vertically coupled layers of InGaAs/AlGaAs
quantum dots were studied by time-resolved photoluminescence. Both resonant and non …

Time-resolved emission from self-assembled single quantum dots using scanning near-field optical microscope

MOM Ono, KMK Matsuda, TST Saiki… - Japanese Journal of …, 1999 - iopscience.iop.org
We study time-resolved emission from self-assembled single InGaAs/GaAs quantum dots by
the time-correlated single photon counting method using near-field optical microscopy. The …