Browse by author
Lookup NU author(s): Dr Alexandra Carvalho,
Dr Mark Rayson,
Professor Patrick Briddon
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
The modification of the electronic structure of silicon nanocrystals using an organic dopant, 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F-4-TCNQ), is investigated using first-principles calculations. It is shown that physisorbed F-4-TCNQ molecules have the effect of oxidizing the nanocrystal, attracting the charge density towards the F-4-TCNQ-nanocrystal interface, and decreasing the excitation energy of the system. In periodic F-4-TCNQ/nanocrystal superlattices, F-4-TCNQ is suggested to enhance exciton separation, and in the presence of free holes, to serve as a bridge for electron/hole transfer between adjacent nanocrystals.
Author(s): Carvalho A, Oberg S, Rayson MJ, Briddon PR
Publication type: Article
Publication status: Published
Journal: Journal of Nanoscience and Nanotechnology
Print publication date: 01/02/2013
ISSN (print): 1533-4880
ISSN (electronic): 1533-4899
Publisher: American Scientific Publishers
Altmetrics provided by Altmetric