Work

Frequency-Dependent Spontaneous Emission Rate from CdSe and CdTe Nanocrystals: Influence of Dark States

Year: 2005

Type: article

Abstract: We studied the rate of spontaneous emission from colloidal CdSe and CdTe nanocrystals at room temperature. The decay rate, obtained from luminescence decay curves, increases with the emission frequency in a supralinear way. This dependence is explained by the thermal occupation of dark exciton states at room temperature, giving rise to a strong attenuation of the rate of emission. The supralinear dependence is in agreement with the results of tight-binding calculations.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.95.236804

Authors: A. F. van Driel, G. Allan, C. Delerue, P. Lodahl, W. L. Vos, D. Vanmaekelbergh

Institutions: Utrecht University, Centre National de la Recherche Scientifique, Institut Supérieur de l'Électronique et du Numérique, Institut d'Electronique, de Microélectronique et de Nanotechnologie, University of Twente

Language: English

Topic: Quantum Dots Synthesis And Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2138451896

FWCI: 5.843

Cites: 34

Cited by: 206

Related to: 9