Numerical Rate Equation Approach to Picosecond Charge State Dynamics in CdTe/ZnTe Quantum Dots
M. Koperskia, T. Kazimierczuka, M. Gorycaa, P. Wojnarb, A. Golnika, P. Kossackia, c and J.A. Gaja
a Institute of Experimental Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
b Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
c Grenoble High Magnetic Field Laboratory, CNRS, BP 166, 38042 Grenoble Cedex 9, France
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The rate equation is used for description of photoluminescence dynamics after pulsed excitation of various states of quantum dots. The picosecond dynamics of averaged charge state of quantum dot is described. We compare our simulations with the experiment and come up with the conclusion that probability of carrier capture weakly depends on quantum dot charge state and that electrons and holes are captured non synchronously.
DOI: 10.12693/APhysPolA.116.893
PACS numbers: 78.55.Et, 73.21.La