Decay dynamics of neutral and charged excitonic complexes in single InAs/GaAs quantum dots

被引：16

作者：

Feucker, M. ^{[1
]}

Seguin, R. ^{[1
]}

Rodt, S. ^{[1
]}

Hoffmann, A. ^{[1
]}

Bimberg, D. ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 06期

关键词：

Charged particles - Complexation - Excitons - Phase transitions - Semiconducting gallium arsenide - Time domain analysis;

D O I：

10.1063/1.2844886

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Systematic time-resolved measurements on neutral and charged excitonic complexes (X, XX, X+, and XX+) of 26 different single InAs/GaAs quantum dots are reported. The ratios of the decay times are discussed in terms of the number of transition channels determined by the excitonic fine structure and a specific transition time for each channel. The measured ratio for the neutral complexes is 1.7 deviating from the theoretically predicted value of 2. A ratio of 1.5 for the positively charged exciton and biexciton decay time is predicted and exactly matched by the measured ratio indicating identical specific transition times for the transition channels involved. (c) 2008 American Institute of Physics.

引用

页数：3

共 19 条

[1] Electron-hole exchange interaction in a negatively charged quantum dot [J].

Akimov, IA ;

Kavokin, KV ;

Hundt, A ;

Henneberger, F .

PHYSICAL REVIEW B, 2005, 71 (07)

[2] Quantum-dot exciton dynamics probed by photon-correlation spectroscopy [J].

Baier, M. H. ;

Malko, A. ;

Pelucchi, E. ;

Oberli, D. Y. ;

Kapon, E. .

PHYSICAL REVIEW B, 2006, 73 (20)

[3] Fine structure of neutral and charged excitons in self-assembled In(Ga)As/(Al)GaAs quantum dots -: art. no. 195315 [J].

Bayer, M ;

Ortner, G ;

Stern, O ;

Kuther, A ;

Gorbunov, AA ;

Forchel, A ;

Hawrylak, P ;

Fafard, S ;

Hinzer, K ;

Reinecke, TL ;

Walck, SN ;

Reithmaier, JP ;

Klopf, F ;

Schäfer, F .

PHYSICAL REVIEW B, 2002, 65 (19) :1953151-19531523

[4] Regulated and entangled photons from a single quantum dot [J].

Benson, O ;

Santori, C ;

Pelton, M ;

Yamamoto, Y .

PHYSICAL REVIEW LETTERS, 2000, 84 (11) :2513-2516

[5] Experimental realization of the one qubit Deutsch-Jozsa algorithm in a quantum dot [J].

Bianucci, P ;

Muller, A ;

Shih, CK ;

Wang, QQ ;

Xue, QK ;

Piermarocchi, C .

PHYSICAL REVIEW B, 2004, 69 (16) :161303-1

[6] Biexciton quantum coherence in a single quantum dot [J].

Chen, G ;

Stievater, TH ;

Batteh, ET ;

Li, XQ ;

Steel, DG ;

Gammon, D ;

Katzer, DS ;

Park, D ;

Sham, LJ .

PHYSICAL REVIEW LETTERS, 2002, 88 (11) :4-117901

[7] SCANNING CATHODOLUMINESCENCE MICROSCOPY - A UNIQUE APPROACH TO ATOMIC-SCALE CHARACTERIZATION OF HETEROINTERFACES AND IMAGING OF SEMICONDUCTOR INHOMOGENEITIES [J].

CHRISTEN, J ;

GRUNDMANN, M ;

BIMBERG, D .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1991, 9 (04) :2358-2368

[8] Fine structure of the quantum-dot trion [J].

Kavokin, KV .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 2003, 195 (03) :592-595

[9] Excitons, biexcitons, and trions in self-assembled (In,Ga)As/GaAs quantum dots: Recombination energies, polarization, and radiative lifetimes versus dot height [J].

Narvaez, GA ;

Bester, G ;

Zunger, A .

PHYSICAL REVIEW B, 2005, 72 (24)

[10] Excitonic exchange effects on the radiative decay time of monoexcitons and biexcitons in quantum dots [J].

Narvaez, Gustavo A. ;

Bester, Gabriel ;

Franceschetti, Alberto ;

Zunger, Alex .

PHYSICAL REVIEW B, 2006, 74 (20)

← 1 2 →