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Conference Paper: Wide wavelength tuning of ZnSe nanostructures by temperature
Title | Wide wavelength tuning of ZnSe nanostructures by temperature |
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Authors | |
Keywords | Growth mechanisms Nanobelts Nanowires Shift of light emission ZnSe |
Issue Date | 2007 |
Citation | 2007 Nsti Nanotechnology Conference And Trade Show - Nsti Nanotech 2007, Technical Proceedings, 2007, v. 1, p. 411-413 How to Cite? |
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. |
Persistent Identifier | http://hdl.handle.net/10722/99418 |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choy, WCH | en_HK |
dc.contributor.author | Leung, YP | en_HK |
dc.contributor.author | Jin, L | en_HK |
dc.contributor.author | Wang, J | en_HK |
dc.date.accessioned | 2010-09-25T18:29:17Z | - |
dc.date.available | 2010-09-25T18:29:17Z | - |
dc.date.issued | 2007 | en_HK |
dc.identifier.citation | 2007 Nsti Nanotechnology Conference And Trade Show - Nsti Nanotech 2007, Technical Proceedings, 2007, v. 1, p. 411-413 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/99418 | - |
dc.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. | en_HK |
dc.language | eng | en_HK |
dc.relation.ispartof | 2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings | en_HK |
dc.subject | Growth mechanisms | en_HK |
dc.subject | Nanobelts | en_HK |
dc.subject | Nanowires | en_HK |
dc.subject | Shift of light emission | en_HK |
dc.subject | ZnSe | en_HK |
dc.title | Wide wavelength tuning of ZnSe nanostructures by temperature | en_HK |
dc.type | Conference_Paper | en_HK |
dc.identifier.email | Choy, WCH: chchoy@eee.hku.hk | en_HK |
dc.identifier.email | Leung, YP: ypleung@alumni.cuhk.net | en_HK |
dc.identifier.authority | Choy, WCH=rp00218 | en_HK |
dc.identifier.authority | Leung, YP=rp00145 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.scopus | eid_2-s2.0-34548010762 | en_HK |
dc.identifier.hkuros | 131691 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-34548010762&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 1 | en_HK |
dc.identifier.spage | 411 | en_HK |
dc.identifier.epage | 413 | en_HK |
dc.identifier.scopusauthorid | Choy, WCH=7006202371 | en_HK |
dc.identifier.scopusauthorid | Leung, YP=8351421700 | en_HK |
dc.identifier.scopusauthorid | Jin, L=54395590000 | en_HK |
dc.identifier.scopusauthorid | Wang, J=7701309180 | en_HK |