Journal article

Understanding the electric field control of the electronic and optical properties of strongly-coupled multi-layered quantum dot molecules

Muhammad Usman

Nanoscale | ROYAL SOC CHEMISTRY | Published : 2015

Abstract

Strongly-coupled quantum dot molecules (QDMs) are widely employed in the design of a variety of optoelectronic, photovoltaic, and quantum information devices. An efficient and optimized performance of these devices demands engineering of the electronic and optical properties of the underlying QDMs. The application of electric fields offers a way to realise such a control over the QDM characteristics for a desired device operation. We performed multi-million-atom atomistic tight-binding calculations to study the influence of electric fields on the electron and hole wave function confinements and symmetries, the ground-state transition energies, the band-gap wavelengths, and the optical transi..

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University of Melbourne Researchers

Grants

Funding Acknowledgements

Computational resources are acknowledged from the National Science Foundation (NSF) funded Network for Computational Nanotechnology (NCN) through http://nanohub.org. Parts of this work were carried out at the Tyndall National Institute, Lee Makings, Dyke Parade, Cork, Ireland.