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2022-09-14Zeitschriftenartikel DOI: 10.18452/25764
Understanding the Double Doping of Organic Semiconductors Via State Energy Renormalization upon Charging
dc.contributor.authorWarren, Ross
dc.contributor.authorCho, Eunkyung
dc.contributor.authorLi, Hong
dc.contributor.authorBredas, Jean-Luc
dc.contributor.authorKoch, Norbert
dc.date.accessioned2023-01-03T13:57:32Z
dc.date.available2023-01-03T13:57:32Z
dc.date.issued2022-09-14none
dc.identifier.urihttp://edoc.hu-berlin.de/18452/26436
dc.description.abstractThe double ionization of molecular dopants enables the doping efficiency (free charges per dopant molecule) to rise above 100%. However, the current models of doped organic semiconductors based on Fermi–Dirac statistics fail to explain the double ionization of dopants and also the analogous situation of bipolaron formation on a host polymer. Here, we address this shortcoming by considering the renormalization of the state energies upon electron transfer between host and p-dopant. We vary the model parameters─the reorganization energy and evolutions of ionization energies and electron affinities upon charging─and plot the fractions of doubly ionized, singly ionized, and neutral species. The model shows good agreement with experimental measurements of doubly ionized p-dopants and bipolarons on a p-doped polymer. With these insights, we suggest that the state energy renormalization upon charging is the key parameter to be minimized for double ionization of dopants or maximized to avoid formation of bipolarons on the host.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 4.0) Attribution 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc530 Physiknone
dc.titleUnderstanding the Double Doping of Organic Semiconductors Via State Energy Renormalization upon Chargingnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/26436-8
dc.identifier.doihttp://dx.doi.org/10.18452/25764
dc.type.versionpublishedVersionnone
local.edoc.pages7none
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
dc.description.versionPeer Reviewednone
dc.identifier.eissn2639-4979
dcterms.bibliographicCitation.doi10.1021/acsmaterialslett.2c00619
dcterms.bibliographicCitation.journaltitleACS materials lettersnone
dcterms.bibliographicCitation.volume4none
dcterms.bibliographicCitation.issue10none
dcterms.bibliographicCitation.originalpublishernameACS Publicationsnone
dcterms.bibliographicCitation.originalpublisherplaceWashington, DCnone
dcterms.bibliographicCitation.pagestart2051none
dcterms.bibliographicCitation.pageend2057none
bua.departmentMathematisch-Naturwissenschaftliche Fakultätnone

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