Exciton transfering macrocrystals of colloidal quantum dots

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buir.advisorDemir, Hilmi Volkan
dc.contributor.authorAkcalı, İbrahim
dc.date.accessioned2016-01-08T20:06:43Z
dc.date.available2016-01-08T20:06:43Z
dc.date.issued2013
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.descriptionAnkara : The Department of Electrical and Electronics Engineering and the Graduate School of Engineering and Science of Bilkent Univ., 2013.en_US
dc.descriptionThesis (Master's) -- Bilkent University, 2013.en_US
dc.descriptionIncludes bibliographical references leaves 54-57.en_US
dc.description.abstractFor nonradiative energy transfer (NRET) in the field of medicine and biology as well as optoelectronics, recent advances in the fluorophores, and optical techniques and devices have led to greatly increased interest in applications employing NRET in the past decade. Replacing traditional fluorophores, colloidal quantum dots have flourished the fluorescence properties of NRETbased applications. This has also given rise to working with narrower tunable emission at a higher quantum yield with broadband absorption, and easier handling and fabrication compared to those of traditional fluorophores. A newly discovered technique, QD incorporation into macrocrystals of various salts, has enhanced the processability, photostability and robustness of these colloidal QDs. To benefit from these enhanced properties for NRET, this thesis proposed and studied macrocrystals for exciton transfer via NRET and fabricated those considering NRET mechanism. The design of these QD-embedded macrocrystal structures has enabled strong energy transfer. The experimentally measured energy transfer reached ~51%, which was obtained with careful optimization. Moreover, these hybrid structures have allowed for the observation of the QD distribution dependence of the transfer efficiency for the QDs wrapped inside macrocrystals. The steady state and time-resolved measurements in this thesis revealed that QD-incorporated macrocrystals can possibly take place of QDs in various NRET-related applications.en_US
dc.description.degreeM.S.en_US
dc.description.statementofresponsibilityAkcalı, İbrahimen_US
dc.format.extentxıı, 57 leaves, illustrations, graphsen_US
dc.identifier.urihttp://hdl.handle.net/11693/17103
dc.language.isoEnglishen_US
dc.publisherBilkent Universityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectExciton transferen_US
dc.subjectnonradiative energy transferen_US
dc.subjectquantum dot embedded macrocrystalsen_US
dc.subject.lccQC611.8.N33 A43 2013en_US
dc.subject.lcshNanocrystals--Optical properties.en_US
dc.subject.lcshQuantum dots.en_US
dc.subject.lcshExciton theory.en_US
dc.subject.lcshEnergy transfer.en_US
dc.titleExciton transfering macrocrystals of colloidal quantum dotsen_US
dc.typeThesisen_US
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Dept. of Electrical and Electronics Engineering - Master's degree