[en] We calculate the optical absorption spectra of prototype (6,6) and (9,9) BN nanotubes in the presence of a perpendicular electric field. This model mimics a gated BN nanotube device. Even though the band-gap of the tubes decreases strongly as a function of the electric field strength, the absorption spectrum of the pure tubes remains remarkably constant up to high field-strength. We show that, in contrast, the levels which are responsible for defect-mediated photo-luminescence are shifted by the electric field. We address the use of BN nanotubes for optoelectronic applications. 0 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Disciplines :
Physics
Author, co-author :
Attaccalite, Claudio; CNRS, ISEN > Institute for Electronics, Microelectronics and Nanotechnology
Wirtz, Ludger ; CNRS - ISEN, Institute for Electronics, Microelectronics and Nanotechnology / European Theoretical Spectroscopy Facility
Marini, Andrea; Università di Roma "Tor Vergata" > Instituto Nazionale per la Fisica della Materia e Dipartimento di Fisica
Rubio, Angel; European Theoretical Spectroscopy Facility / Donastia International Physics Center and Department of Material Physics
Language :
English
Title :
Absorption of BN nanotubes under the influence of a perpendicular electric field
Publication date :
2007
Event name :
1st International Winterschool on Electronic Properties of Novel Materials
Event place :
Kirchberg, Austria
Event date :
MAR 10-17, 2007
Audience :
International
Journal title :
Physica Status Solidi B. Basic Research
ISSN :
0370-1972
Volume :
244
Issue :
11
Pages :
4288-4292
Peer reviewed :
Peer reviewed
Commentary :
MAR 10-17, 2007
21st International Winterschool on Electronic Properties of Novel Materials
Kirchberg
AUSTRIA
Univ Wien, MEFS Co Ltd, Rice Univ, Dept Chem, Appl Nanofluorescence, BRUKER OPTIK GmbH, HORIBA Jobin Yvon GmbH, NANOCYL S A, WILEY-VCH Verlag GmbH & Co
