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2017-02-15Zeitschriftenartikel DOI: 10.18452/18813
Electronic Properties of Optically Switchable Photochromic Diarylethene Molecules at the Interface with Organic Semiconductors
dc.contributor.authorWang, Qiankun
dc.contributor.authorFrisch, Johannes
dc.contributor.authorHerder, Martin
dc.contributor.authorHecht, Stefan
dc.contributor.authorKoch, Norbert
dc.date.accessioned2018-02-20T16:35:43Z
dc.date.available2018-02-20T16:35:43Z
dc.date.issued2017-02-15
dc.identifier.other10.1002/cphc.201601442
dc.identifier.urihttp://edoc.hu-berlin.de/18452/19540
dc.description.abstractLight-switching induced changes in the electronic properties of photochromic diarylethene, i.e., 1,2-bis(2-methyl-5-p-tolylthiophen-3-yl)cyclopent-1-ene (DAE1), thin films at interfaces to a gold electrode and two polymer semiconductors were investigated by direct and inverse photoelectron spectroscopy. The photoisomerization was achieved by in situ irradiation of ultraviolet and visible light. Efficient and reversible switching between the open and closed isomers of DAE1 was evidenced at all interfaces, with profound impact on the energy level alignment. The frontier occupied level of DAE1 changes by 0.8 eV with respect to the Au Fermi level upon switching. Corresponding sizable changes in the electron and transport level offsets between the two polymers and DAE1 in its open and closed form were determined. This gives rise to fundamentally different functionality of these interfaces in terms of charge transport. Our study proves the viability of light controlled energy level manipulation at various interfaces in photoswitchable opto-electronic devices.eng
dc.language.isoeng
dc.publisherHumboldt-Universität zu Berlin
dc.subjectphotochromic diaryletheneseng
dc.subjectphotoisomerizationeng
dc.subjectenergy level alignmenteng
dc.subjectcharge transporteng
dc.subject.ddc530 Physik
dc.titleElectronic Properties of Optically Switchable Photochromic Diarylethene Molecules at the Interface with Organic Semiconductors
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/19540-0
dc.identifier.doihttp://dx.doi.org/10.18452/18813
dc.type.versionacceptedVersion
local.edoc.pages22
local.edoc.type-nameZeitschriftenartikel
local.edoc.institutionMathematisch-Naturwissenschaftliche Fakultät
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-publisher-nameWiley
local.edoc.container-volume18
local.edoc.container-issue7
local.edoc.container-firstpage722
local.edoc.container-lastpage727

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