Browse by author
Lookup NU author(s): Dr Jon Goss,
Professor Patrick Briddon,
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
Functionalization of silicon surfaces at the nanoclusters size, is a crucial improvement that can give a great opportunity to use them in an enormous range of applications, including optical sensing, biological fluorescence imaging and optoelectronic devices. Using density functional theory calculations, light-absorption and luminescence processes are modelled at the quantum mechanical level. Optimized geometries and electronic structures of hydrogenated silicon quantum dots of ~1 and 1.6 nm diameter attached to a diversity of chemical functional groups are investigated. In-depth characterization of their electronic structure and optical absorption shows that the impact upon the optical properties of the quantum dot depends strongly on the form of the functional group: in some important cases electron states are introduced into the band-gap leading to non-radiative recombination.
Author(s): Ahmed M, Goss J, Eyre R, Briddon P, Taylforth M
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: Nanotechnology: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech
Year of Conference: 2010
Publisher: CRC Press
Library holdings: Search Newcastle University Library for this item