Size-Dependence of the Wavefunction of Self-Assembled Quantum Dots

Abstract

The radiative and non-radiative decay rates of InAs quantum dots are measured by controlling the local density of optical states near an interface. From time-resolved measurements we extract the oscillator strength and the quantum efficiency and their dependence on emission energy. From our results and a theoretical model we determine the striking dependence of the overlap of the electron and hole wavefunctions on the quantum dot size. We conclude that the optical quality is best for large quantum dots, which is important in order to optimally tailor quantum dot emitters for, e.g., quantum electrodynamics experiments.

5 pages, 3 figures

References in corpus (2)

• Frequency-dependent spontaneous emission rate from CdSe and CdTe nanocrystals: influence of dark states
• Manipulation of the Spontaneous Emission Dynamics of Quantum Dots in 2D Photonic Crystals

Cited by in corpus (3)

• Experimental realization of highly-efficient broadband coupling of single quantum dots to a photonic crystal waveguide
• Size dependent oscillator strength and quantum efficiency of CdSe quantum dots determined by controlling the local density of states
• Decay dynamics of quantum dots influenced by the local density of optical states of two-dimensional photonic crystal membranes