Facile one-step syntheses of colloidal EuS, EuTe and Te nanocrystals are presented in this thesis. The formation of single crystalline monodisperse nanocrystals, with sizes finely controlled by synthetic conditions, was confirmed by x-ray diffraction and high resolution transmission electron microscopy analysis. The exciton transition of EuS and EuTe nanocrystals blue-shifts to higher energies with decreasing particle sizes, as revealed by optical absorption and photoluminescence measurements. The feasibility of synthesizing monocrystalline EuS nanorods and EuTe nanospindles was also demonstrated, making them potentially viable materials for device applications. Low-temperature magnetic measurements show that as-synthesized EuTe nanoparticles show pronounced superantiferromagnetic transition between. Te nanocrystals were well separated into two size regimes and assembled into films by eletrophoretic deposition.
| Identifer | oai:union.ndltd.org:VANDERBILT/oai:VANDERBILTETD:etd-03082011-112907 |
| Date | 09 March 2011 |
| Creators | He, Weidong |
| Contributors | Timothy P. Hanusa, James Henry Dickerson, Jason Gage Valentine, Kalman Varga |
| Publisher | VANDERBILT |
| Source Sets | Vanderbilt University Theses |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.library.vanderbilt.edu/available/etd-03082011-112907/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Vanderbilt University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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