Energy transfer in the system of PbS quantum dots

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.advisor
dc.contributor.authorVorsina, Tatiana
dc.contributor.schoolSähkötekniikan korkeakoulufi
dc.contributor.supervisorSopanen, Markku
dc.date.accessioned2016-08-26T09:06:39Z
dc.date.available2016-08-26T09:06:39Z
dc.date.issued2016-08-24
dc.description.abstractThis work is devoted the investigation of the process of nonradiative energy transfer via FRET mechanism between lead sulphide QDs of different size in the porous matrix and on the glass surface at both room and decreased temperatures. As a result, we observed quenching of photoluminescence (PL) for donors together with flare-up of PL of acceptors, which was accompanied by significant increasing of lifetimes of acceptors up to values characteristic for donors. This unexpected effect can be explained using three-level model which based on a complex energy structure of PbS quantum dots-donors, which are involved in the energy transfer. The observed effect can lead to a significant change in the dynamic characteristics of the charge carriers in quantum dot solar cells.en
dc.format.extent50+0
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/21613
dc.identifier.urnURN:NBN:fi:aalto-201608263069
dc.language.isoenen
dc.locationP1fi
dc.programmeNanoRad - Master’s Programme in Nano and Radio Sciences (TS2013)fi
dc.programme.majorMicro- and Nanosciencesfi
dc.programme.mcodeELEC3037fi
dc.rights.accesslevelopenAccess
dc.subject.keywordquantum dotsen
dc.subject.keywordenergy transferen
dc.subject.keywordsolar cellsen
dc.subject.keywordluminescenceen
dc.titleEnergy transfer in the system of PbS quantum dotsen
dc.typeG2 Pro gradu, diplomityöfi
dc.type.okmG2 Pro gradu, diplomityö
dc.type.ontasotMaster's thesisen
dc.type.ontasotDiplomityöfi
dc.type.publicationmasterThesis
local.aalto.idinssi54281
local.aalto.openaccessyes
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