Narrowed bandgaps and stronger excitonic effects from small boron nitride nanotubes

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dc.contributor.authorYu, Jen_AU
dc.contributor.authorYu, DHen_AU
dc.contributor.authorChen, YSen_AU
dc.contributor.authorChen, Hen_AU
dc.contributor.authorLin, MYen_AU
dc.contributor.authorCheng, BMen_AU
dc.contributor.authorLi, Jen_AU
dc.contributor.authorDuan, Wen_AU
dc.date.accessioned2009-09-30T01:37:15Zen_AU
dc.date.accessioned2010-04-30T05:05:39Zen_AU
dc.date.available2009-09-30T01:37:15Zen_AU
dc.date.available2010-04-30T05:05:39Zen_AU
dc.date.issued2009-07-16en_AU
dc.date.statistics2009-07-16en_AU
dc.description.abstractThe 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. © 2009, Elsevier Ltd.en_AU
dc.identifier.citationYu, J., Yu, D. H., Chen, Y., Chen, H., Lin, M. Y., Cheng, B. M., Li, J. & Duan, W. (2009). Narrowed bandgaps and stronger excitonic effects from small boron nitride nanotubes. Chemical Physics Letters, 476(4-6), 240-243. doi:10.1016/j.cplett.2009.06.012en_AU
dc.identifier.govdoc1365en_AU
dc.identifier.issn0009-2614en_AU
dc.identifier.issue4-6en_AU
dc.identifier.journaltitleChemical Physics Lettersen_AU
dc.identifier.pagination240-243en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.cplett.2009.06.012en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1875en_AU
dc.identifier.volume476en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectPhotoluminescenceen_AU
dc.subjectSpectroscopyen_AU
dc.subjectExcitationen_AU
dc.subjectBoron nitridesen_AU
dc.subjectNanotubesen_AU
dc.subjectGraded band gapsen_AU
dc.titleNarrowed bandgaps and stronger excitonic effects from small boron nitride nanotubesen_AU
dc.typeJournal Articleen_AU
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