2008/02/07 by M. Feucker, R. Seguin, S. Rodt +2
Engineering · Materials Science · Physics and Astronomy · #Organic Light-Emitting Diodes Research #Quantum Dots Synthesis And Properties #Semiconductor Quantum Structures and Devices #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.2844886
published as Appl. Phys. Lett. 92, 063116 (2008) · 4 pages, 4 figures
arxiv created 2008/02/07 · openalex publication_date 2008/02/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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.