Phase transformations in CdSe quantum dots induced by reaction time

Kanodarwala, FK; Wang, F; Reece, PJ; Stride, JA

Phase transformations in CdSe quantum dots induced by reaction time

Kanodarwala, FK Wang, F

Reece, PJ Stride, JA

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Publication Type:: Journal Article
Citation:: Materials Letters, 2015, 141 pp. 67 - 69
Issue Date:: 2015-02-15

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Field	Value	Language
dc.contributor.author	Kanodarwala, FK	en_US
dc.contributor.author	Wang, F https://orcid.org/0000-0001-7403-3305	en_US
dc.contributor.author	Reece, PJ	en_US
dc.contributor.author	Stride, JA	en_US
dc.date.issued	2015-02-15	en_US
dc.identifier.citation	Materials Letters, 2015, 141 pp. 67 - 69	en_US
dc.identifier.issn	0167-577X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/117558
dc.description.abstract	© 2014 Published by Elsevier B.V. This paper reports the synthesis of high-quality TOP/TOPO capped CdSe nanocrystals using a simple colloidal method. The effects of varying the reaction time on the size and crystallinity of the synthesized CdSe quantum dots were studied in detail. Powder X-ray diffraction (PXRD) analysis showed a dependence of the crystallite phases as a function of reaction time, from cubic zinc-blende to hexagonal wurtzite and back again to the cubic phase. PXRD data was found to be consistent with high resolution transmission electron microscopy (HRTEM) images of the particles, whilst optical spectroscopy demonstrated the quantum dot nature of the particles. The reaction time-dependent phase behavior is best accounted for by rapid growth along the {111} crystallite facets, after which the facial facets then 'catch-up', resulting once again in cubic symmetry.	en_US
dc.relation.ispartof	Materials Letters	en_US
dc.relation.isbasedon	10.1016/j.matlet.2014.11.043	en_US
dc.subject.classification	Materials	en_US
dc.title	Phase transformations in CdSe quantum dots induced by reaction time	en_US
dc.type	Journal Article
utslib.citation.volume	141	en_US
utslib.for	091205 Functional Materials	en_US
utslib.for	030302 Nanochemistry and Supramolecular Chemistry	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CFS - Centre for Forensic Science
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	141	en_US

Abstract:

© 2014 Published by Elsevier B.V. This paper reports the synthesis of high-quality TOP/TOPO capped CdSe nanocrystals using a simple colloidal method. The effects of varying the reaction time on the size and crystallinity of the synthesized CdSe quantum dots were studied in detail. Powder X-ray diffraction (PXRD) analysis showed a dependence of the crystallite phases as a function of reaction time, from cubic zinc-blende to hexagonal wurtzite and back again to the cubic phase. PXRD data was found to be consistent with high resolution transmission electron microscopy (HRTEM) images of the particles, whilst optical spectroscopy demonstrated the quantum dot nature of the particles. The reaction time-dependent phase behavior is best accounted for by rapid growth along the {111} crystallite facets, after which the facial facets then 'catch-up', resulting once again in cubic symmetry.

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http://hdl.handle.net/10453/117558