Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/32584
Title: The excitonic effects in single and double-walled boron nitride nanotubes
Authors: Wang, S
Li, Y
Yip, J 
Wang, J
Issue Date: 2014
Source: Journal of chemical physics, 2014, v. 140, no. 24, 244701, p. 244701-1-244701-6
Abstract: The electronic structures and excitonic optical properties of single- and double-walled armchair boron nitride nanotubes (BNNTs) [e.g., (5,5) and (10,10), and (5,5) (10,10)] are investigated within many-body Green's function and Bethe-Salpeter equation formalism. The first absorption peak of the double-walled nanotube has almost no shift compared with the single-walled (5,5) tube due to the strong optical transition in the double-walled tube that occurs within the inner (5,5) one. Dark and semi-dark excitonic states are detected in the lower energy region, stemming from the charge transfer between inner and outer tubes in the double-walled structure. Most interestingly, the charge transfer makes the electron and the hole reside in different tubes. Moreover, the excited electrons in the double-walled BNNT are able to transfer from the outer tube to the inner one, opposite to that which has been observed in double-walled carbon nanotubes.
Publisher: American Institute of Physics
Journal: Journal of chemical physics 
ISSN: 0021-9606
EISSN: 1089-7690
DOI: 10.1063/1.4880726
Rights: © 2014 AIP Publishing LLC.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in S. Wang et al., J. Chem. Phys. 140, 244701 (2014) and may be found at https://dx.doi.org/10.1063/1.4880726
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