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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 FieldValue
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
 
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<contributor.author>Leung, YP</contributor.author>
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<contributor.author>Wang, J</contributor.author>
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<description.abstract>ZnSe 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.</description.abstract>
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<subject>Growth mechanisms</subject>
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<subject>Nanowires</subject>
<subject>Shift of light emission</subject>
<subject>ZnSe</subject>
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Author Affiliations
  1. The University of Hong Kong
  2. Wuhan University