Absorption of BN nanotubes under the influence of a perpendicular electric field

被引：19
作者：
Attaccalite, Claudio
Wirtz, Ludger
Marini, Andrea
Rubio, Angel
机构：
[1] Inst Elect Microelect & Nanotechnol, Dept ISEN, F-59652 Villeneuve Dascq, France
[2] European Theoret Spectroscopy Facil, San Sebastian, Spain
[3] Univ Roma Tor Vergata, Ist Nazl Fis Mat, Dipartimento Fis, I-00133 Rome, Italy
[4] Donostia Int Phys Ctr, CSIC, EHU, Ctr Mix,UPV,Dept Mat Phys, San Sebastian 20018, Spain
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2007年 / 244卷 / 11期
关键词：
D O I：
10.1002/pssb.200776199
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
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.
引用
收藏
页码：4288 / 4292
页数：5
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