dc.contributor.author	Dickerson, Bryan Douglas	en
dc.contributor.committeechair	Claus, Richard O.	en
dc.contributor.committeemember	Davis, Richey M.	en
dc.contributor.committeemember	Love, Brian J.	en
dc.contributor.committeemember	Robertson, John L.	en
dc.contributor.committeemember	Spillman, William B. Jr.	en
dc.contributor.committeemember	Meissner, Kenith E.	en
dc.contributor.department	Materials Science and Engineering	en
dc.date.accessioned	2014-03-14T20:10:57Z	en
dc.date.adate	2005-04-27	en
dc.date.available	2014-03-14T20:10:57Z	en
dc.date.issued	2005-04-12	en
dc.date.rdate	2010-10-13	en
dc.date.sdate	2005-04-26	en
dc.description.abstract	CdSe quantum dots produced by organometallic synthesis are useful as tunable emitters for photonic devices and as multi-colored protein markers for biomedical imaging, applications requiring bright and narrow emission. A diffusion-limited model helped monitor growth rates via photoluminescence and absorbance spectroscopy, in order to characterize synthesis kinetics in stearic acid, dodecylamine, and in trioctylphosphine oxide. The nucleation rate increased with Se concentration, while the growth rate followed the Cd concentration. Emission peak widths, emission redshift rates, nanocrystal growth rates, and reactant concentrations all decreased to a minimum when emission reached the critical wavelength, at a reaction completion time, tc. The temperature dependence of 1/tc and of redshift rates followed Arrhenius behavior governed by activation energies, which were tailored by the choice of solvent. Synthesis in solvents, such as stearic acid, with lower activation energies produced faster initial nanocrystal growth and longer critical wavelengths. The highest photoluminescence quantum yield was generally at wavelengths shorter than the critical wavelength, when moderate growth rates enabled surface reconstruction while precursors were still available.	en
dc.description.degree	Ph. D.	en
dc.format.extent	1 volu	en
dc.format.mimetype	application/pdf	en
dc.identifier.other	etd-04262005-181042	en
dc.identifier.sourceurl	http://scholar.lib.vt.edu/theses/available/etd-04262005-181042/	en
dc.identifier.uri	http://hdl.handle.net/10919/27322	en
dc.language.iso	en	en
dc.publisher	Virginia Tech	en
dc.relation.haspart	Ch3History.pdf	en
dc.relation.haspart	Ch0aTitle.pdf	en
dc.relation.haspart	Ch9Appendix.pdf	en
dc.relation.haspart	Ch2Theory.pdf	en
dc.relation.haspart	Ch1Applications.pdf	en
dc.relation.haspart	Ch0bTOC.pdf	en
dc.relation.haspart	Ch10Vita.pdf	en
dc.relation.haspart	Ch6Results.pdf	en
dc.relation.haspart	Ch7Discussion.pdf	en
dc.relation.haspart	Ch4Hypothesis.pdf	en
dc.relation.haspart	Ch8Refs.pdf	en
dc.relation.haspart	Ch5Experimental.pdf	en
dc.relation.isformatof	OCLC# 93606649	en
dc.rights	In Copyright	en
dc.rights.uri	http://rightsstatements.org/vocab/InC/1.0/	en
dc.subject	diffusion	en
dc.subject	growth mechanisms	en
dc.subject	HgCdTe	en
dc.subject	HgTe	en
dc.subject	quantum dot	en
dc.subject	nanocrystal	en
dc.subject	nanoparticle	en
dc.subject	CdSe	en
dc.subject	II VI semiconductor	en
dc.subject	photoluminescence	en
dc.subject	cadmium selenide	en
dc.subject	kinetics	en
dc.subject	organometallic synthesis	en
dc.subject.lcc	LD5655.V856 2005.D535	en
dc.title	Organometallic Synthesis Kinetics of CdSe Quantum Dots	en
dc.type	Dissertation	en
dc.type.dcmitype	Text	en
thesis.degree.discipline	Materials Science and Engineering	en
thesis.degree.grantor	Virginia Polytechnic Institute and State University	en
thesis.degree.level	doctoral	en
thesis.degree.name	Ph. D.	en

Organometallic Synthesis Kinetics of CdSe Quantum Dots

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