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- Publisher Website: 10.1016/j.jcis.2008.01.048
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Article: Synthesis and characterization of one-dimensional CdSe by a novel reverse micelle assisted hydrothermal method
Title | Synthesis and characterization of one-dimensional CdSe by a novel reverse micelle assisted hydrothermal method |
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Authors | |
Keywords | Nanoparticles Reverse micelles Hydrothermal method Surfactants |
Issue Date | 2008 |
Citation | Journal of Colloid and Interface Science, 2008, v. 320, n. 2, p. 491-500 How to Cite? |
Abstract | Nanocrystalline cadmium selenide (CdSe) is a low bandgap material (E = 1.75 eV, at room temperature) with potential applications in photoelectronic devices. Its electronic properties are dependent on the dimensions of the crystals. In this study, one-dimensional wurtzite CdSe nanoparticles with a diameter of 43 ± 6 nm and an aspect ratio of 3.7 ± 0.6 were synthesized through a novel reverse micelle assisted hydrothermal method at a relatively low temperature. This method combines the advantages of the hydrothermal method's ability to achieve good crystallinity with the well-controlled growth offered by the reverse micelle method. The morphology of the nanoparticles can be controlled by the amount of sodium bis(2-ethylhexyl) sulfosuccinate (AOT), the amount of hydrazine hydrate and the reaction temperature. It is proposed that AOT controls the length while hydrazine hydrate controls the diameter of the growing nanocrystals. The photoluminescence (PL) of individual nanorods and the longitudinal-optical phonon properties were mapped using confocal microscopy. Raman spectroscopy showed a blue-shift of both the LO and 2LO phonon peaks which may be due to a lattice contraction of the CdSe nanorods. A nucleation and growth mechanism for these nanoparticles is also proposed based on time-dependent studies. © 2008 Elsevier Inc. All rights reserved. g |
Persistent Identifier | http://hdl.handle.net/10722/298416 |
ISSN | 2023 Impact Factor: 9.4 2023 SCImago Journal Rankings: 1.760 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Xi, Lifei | - |
dc.contributor.author | Lam, Yeng Ming | - |
dc.contributor.author | Xu, Yan Ping | - |
dc.contributor.author | Li, Lain Jong | - |
dc.date.accessioned | 2021-04-08T03:08:22Z | - |
dc.date.available | 2021-04-08T03:08:22Z | - |
dc.date.issued | 2008 | - |
dc.identifier.citation | Journal of Colloid and Interface Science, 2008, v. 320, n. 2, p. 491-500 | - |
dc.identifier.issn | 0021-9797 | - |
dc.identifier.uri | http://hdl.handle.net/10722/298416 | - |
dc.description.abstract | Nanocrystalline cadmium selenide (CdSe) is a low bandgap material (E = 1.75 eV, at room temperature) with potential applications in photoelectronic devices. Its electronic properties are dependent on the dimensions of the crystals. In this study, one-dimensional wurtzite CdSe nanoparticles with a diameter of 43 ± 6 nm and an aspect ratio of 3.7 ± 0.6 were synthesized through a novel reverse micelle assisted hydrothermal method at a relatively low temperature. This method combines the advantages of the hydrothermal method's ability to achieve good crystallinity with the well-controlled growth offered by the reverse micelle method. The morphology of the nanoparticles can be controlled by the amount of sodium bis(2-ethylhexyl) sulfosuccinate (AOT), the amount of hydrazine hydrate and the reaction temperature. It is proposed that AOT controls the length while hydrazine hydrate controls the diameter of the growing nanocrystals. The photoluminescence (PL) of individual nanorods and the longitudinal-optical phonon properties were mapped using confocal microscopy. Raman spectroscopy showed a blue-shift of both the LO and 2LO phonon peaks which may be due to a lattice contraction of the CdSe nanorods. A nucleation and growth mechanism for these nanoparticles is also proposed based on time-dependent studies. © 2008 Elsevier Inc. All rights reserved. g | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Colloid and Interface Science | - |
dc.subject | Nanoparticles | - |
dc.subject | Reverse micelles | - |
dc.subject | Hydrothermal method | - |
dc.subject | Surfactants | - |
dc.title | Synthesis and characterization of one-dimensional CdSe by a novel reverse micelle assisted hydrothermal method | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.jcis.2008.01.048 | - |
dc.identifier.scopus | eid_2-s2.0-40649101601 | - |
dc.identifier.volume | 320 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 491 | - |
dc.identifier.epage | 500 | - |
dc.identifier.isi | WOS:000254351600015 | - |
dc.identifier.issnl | 0021-9797 | - |