Conference Paper: Wide wavelength tuning of ZnSe nanostructures by temperature

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TitleWide wavelength tuning of ZnSe nanostructures by temperature
AuthorsChoy, WCH1
Leung, YP1
Jin, L1 2
Wang, J2
KeywordsGrowth mechanisms
Nanobelts
Nanowires
Shift of light emission
ZnSe
Issue Date2007
Citation2007 Nsti Nanotechnology Conference And Trade Show - Nsti Nanotech 2007, Technical Proceedings, 2007, v. 1, p. 411-413 [How to Cite?]
AbstractZnSe nanowires and nanobelts with zinc blende structure have been synthesized. The morphology and the growth mechanisms of the ZnSe nanostructures will be discussed. From the photoluminescence (PL) of the ZnSe nanostructures, it is interesting to note that red color emission with a single peak at the photon energy of 2eV at room temperature is obtained while the typical bandgap transition energy of ZnSe is 2.7eV. When the temperature is reduced to 150K, the peak wavelength shifts to 2.3eV with yellowish emission and then blue emission with the peak at 2.7eV at temperature less than 50K. The overall wavelength shift of 700meV is obtained as compared to the conventional ZnSe of about 100meV. The details of PL spectra of ZnSe at various temperatures are studied from (i) the spectral profile, (ii) the half-width-high-maximum and (iii) the peak photon energy of each of the emission centers.
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorChoy, WCH
dc.contributor.authorLeung, YP
dc.contributor.authorJin, L
dc.contributor.authorWang, J
dc.date.accessioned2010-09-25T18:29:17Z
dc.date.available2010-09-25T18:29:17Z
dc.date.issued2007
dc.description.abstractZnSe nanowires and nanobelts with zinc blende structure have been synthesized. The morphology and the growth mechanisms of the ZnSe nanostructures will be discussed. From the photoluminescence (PL) of the ZnSe nanostructures, it is interesting to note that red color emission with a single peak at the photon energy of 2eV at room temperature is obtained while the typical bandgap transition energy of ZnSe is 2.7eV. When the temperature is reduced to 150K, the peak wavelength shifts to 2.3eV with yellowish emission and then blue emission with the peak at 2.7eV at temperature less than 50K. The overall wavelength shift of 700meV is obtained as compared to the conventional ZnSe of about 100meV. The details of PL spectra of ZnSe at various temperatures are studied from (i) the spectral profile, (ii) the half-width-high-maximum and (iii) the peak photon energy of each of the emission centers.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citation2007 Nsti Nanotechnology Conference And Trade Show - Nsti Nanotech 2007, Technical Proceedings, 2007, v. 1, p. 411-413 [How to Cite?]
dc.identifier.epage413
dc.identifier.hkuros131691
dc.identifier.scopuseid_2-s2.0-34548010762
dc.identifier.spage411
dc.identifier.urihttp://hdl.handle.net/10722/99418
dc.identifier.volume1
dc.languageeng
dc.relation.ispartof2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings
dc.relation.referencesReferences in Scopus
dc.subjectGrowth mechanisms
dc.subjectNanobelts
dc.subjectNanowires
dc.subjectShift of light emission
dc.subjectZnSe
dc.titleWide wavelength tuning of ZnSe nanostructures by temperature
dc.typeConference_Paper
Author Affiliations
  1. The University of Hong Kong
  2. Wuhan University