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Spectroscopy, Imaging and Switching Behaviour of Individual InP/GaInP Quantum Dots
Journal article   Peer reviewed

Spectroscopy, Imaging and Switching Behaviour of Individual InP/GaInP Quantum Dots

Pedro Castrillo, Dan Hessman, Mats-Erik Pistol, Jose Antonio Prieto, Craig Pryor and Lars Samuelson
Japanese Journal of Applied Physics, Vol.36(Part 1, No. 6B), pp.4188-4190
06/30/1997
DOI: 10.1143/JJAP.36.4188

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Abstract

We have measured the photoluminescence of individual quantum dots grown by the Stranski-Krastanow growth mode. Studies of many individual quantum dots reveal that about one quantum dot in a thousand switches between two emission intensity levels on a time-scale of seconds. The switching is temperature and excitation power activated. For each set of experimental conditions, the statistics is consistent with random telegraph noise. By strong illumination it is possible to turn the switching off, after which the quantum dot emits continuously.

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