Narrowed bandgaps and stronger excitonic effects from small boron nitride nanotubes
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Yu, Jun X; Yu, Dehong; Chen, Ying; Chen, Hua; Lin, Meng-Yeh; Cheng, Bing-Ming; Li, Jianbao; Duan, Wenhui
Description
The bandgap of boron nitride nanotubes (BNNTs) is generally considered to be independent on tube radius and chirality. However, we have observed that the bandgaps of BNNTs do depend on the tube size. Photoluminescence excitation spectroscopy with variable photon energies in vacuum ultraviolet (VUV) range revealed that the bandgap becomes smaller when the tube diameter decreases. This is consistent with red-shifted luminescent emissions. The strong interactions between excitons and phonons are...[Show more]
dc.contributor.author | Yu, Jun X | |
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dc.contributor.author | Yu, Dehong | |
dc.contributor.author | Chen, Ying | |
dc.contributor.author | Chen, Hua | |
dc.contributor.author | Lin, Meng-Yeh | |
dc.contributor.author | Cheng, Bing-Ming | |
dc.contributor.author | Li, Jianbao | |
dc.contributor.author | Duan, Wenhui | |
dc.date.accessioned | 2015-12-10T22:56:29Z | |
dc.identifier.issn | 0009-2614 | |
dc.identifier.uri | http://hdl.handle.net/1885/60254 | |
dc.description.abstract | The bandgap of boron nitride nanotubes (BNNTs) is generally considered to be independent on tube radius and chirality. However, we have observed that the bandgaps of BNNTs do depend on the tube size. Photoluminescence excitation spectroscopy with variable photon energies in vacuum ultraviolet (VUV) range revealed that the bandgap becomes smaller when the tube diameter decreases. This is consistent with red-shifted luminescent emissions. The strong interactions between excitons and phonons are possibly responsible for the bandgap narrowing as the function of nanotube size. | |
dc.publisher | Elsevier | |
dc.source | Chemical Physics Letters | |
dc.subject | Keywords: Band gap narrowing; Band gaps; Boron nitride nanotubes; Excitonic effect; In-vacuum; Luminescent emission; Photoluminescence excitation spectroscopy; Photon energy; Red-shifted; Strong interaction; Tube diameters; Tube size; Boron; Boron nitride; Nanotube | |
dc.title | Narrowed bandgaps and stronger excitonic effects from small boron nitride nanotubes | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 476 | |
dc.date.issued | 2009 | |
local.identifier.absfor | 030306 - Synthesis of Materials | |
local.identifier.ariespublication | U4105084xPUB530 | |
local.type.status | Published Version | |
local.contributor.affiliation | Yu, Jun X, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Yu, Dehong, Australian Nuclear Science and Technology Organisation | |
local.contributor.affiliation | Chen, Ying, Deakin University | |
local.contributor.affiliation | Chen, Hua, Deakin University | |
local.contributor.affiliation | Lin, Meng-Yeh, National Synchrotron Radiation Research Center | |
local.contributor.affiliation | Cheng, Bing-Ming, National Synchrotron Radiation Research Center | |
local.contributor.affiliation | Li, Jianbao, Tsinghua University | |
local.contributor.affiliation | Duan, Wenhui, Tsinghua University | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.issue | 4-6 | |
local.bibliographicCitation.startpage | 240 | |
local.bibliographicCitation.lastpage | 243 | |
local.identifier.doi | 10.1016/j.cplett.2009.06.012 | |
dc.date.updated | 2016-02-24T10:36:13Z | |
local.identifier.scopusID | 2-s2.0-71849091622 | |
Collections | ANU Research Publications |
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