Light emission and excitonic effect of boron nitride nanotubes observed by photoluminescent spectra

Chen, Hua, Chen, Ying, Liu, Yun, Xu, Chao-Nan and Williams, Jim S. 2007, Light emission and excitonic effect of boron nitride nanotubes observed by photoluminescent spectra, Optical materials, vol. 29, no. 11, pp. 1295-1298.

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Title Light emission and excitonic effect of boron nitride nanotubes observed by photoluminescent spectra
Author(s) Chen, Hua
Chen, Ying
Liu, Yun
Xu, Chao-Nan
Williams, Jim S.
Journal name Optical materials
Volume number 29
Issue number 11
Start page 1295
End page 1298
Publisher Elsevier BV
Place of publication Amsterdam, The Netherlands
Publication date 2007-07
ISSN 0925-3467
1873-1252
Keyword(s) boron nitride
nanotube
optical absorption
photoluminescence
exciton
Summary Photoluminescent (PL) and optical absorption spectra of high-yield multi-wall BN nanotubes (BNNTs) were systematically investigated at room temperature in comparison with commercial hexagonal BN (h-BN) powder. The direct band gap of the BNNTs was determined to be 5.75 eV, just slightly narrower than that of h-BN powder (5.82 eV). Two Frenkel excitons with the binding energy of 1.27 and 1.35 eV were also determined. However, they were not a distinctive characteristic of the BNNTs as reported previously. Observed broad UV–visible–NIR light emission demonstrates the potential of the BNNTs as a nano light source.
Notes Available online 24 July 2006.
Language eng
Field of Research 100706 Nanofabrication, Growth and Self Assembly
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2006, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30016476

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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