Enhancing sub-bandgap external quantum efficiency by photomultiplication for narrowband organic near-infrared photodetectors

dc.bibliographicCitation.firstPage4259
dc.bibliographicCitation.journalTitleNature Communicationseng
dc.bibliographicCitation.volume12
dc.contributor.authorKublitski, Jonas
dc.contributor.authorFischer, Axel
dc.contributor.authorXing, Shen
dc.contributor.authorBaisinger, Lukasz
dc.contributor.authorBittrich, Eva
dc.contributor.authorSpoltore, Donato
dc.contributor.authorBenduhn, Johannes
dc.contributor.authorVandewal, Koen
dc.contributor.authorLeo, Karl
dc.date.accessioned2023-03-27T11:12:04Z
dc.date.available2023-03-27T11:12:04Z
dc.date.issued2021
dc.description.abstractDetection of electromagnetic signals for applications such as health, product quality monitoring or astronomy requires highly responsive and wavelength selective devices. Photomultiplication-type organic photodetectors have been shown to achieve high quantum efficiencies mainly in the visible range. Much less research has been focused on realizing near-infrared narrowband devices. Here, we demonstrate fully vacuum-processed narrow- and broadband photomultiplication-type organic photodetectors. Devices are based on enhanced hole injection leading to a maximum external quantum efficiency of almost 2000% at −10 V for the broadband device. The photomultiplicative effect is also observed in the charge-transfer state absorption region. By making use of an optical cavity device architecture, we enhance the charge-transfer response and demonstrate a wavelength tunable narrowband photomultiplication-type organic photodetector with external quantum efficiencies superior to those of pin-devices. The presented concept can further improve the performance of photodetectors based on the absorption of charge-transfer states, which were so far limited by the low external quantum efficiency provided by these devices.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/11768
dc.identifier.urihttp://dx.doi.org/10.34657/10802
dc.language.isoeng
dc.publisher[London] : Nature Publishing Group UK
dc.relation.doihttps://doi.org/10.1038/s41467-021-24500-2
dc.relation.essn2041-1723
dc.rights.licenseCC BY 4.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.subject.ddc500
dc.subject.ddc540
dc.subject.ddc530
dc.subject.otherelectromagnetic waveeng
dc.subject.otherquantum mechanicseng
dc.subject.otherwavelengtheng
dc.subject.otherinfrared radiationeng
dc.subject.othervacuumeng
dc.titleEnhancing sub-bandgap external quantum efficiency by photomultiplication for narrowband organic near-infrared photodetectorseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccess
wgl.contributorIPF
wgl.subjectChemieger
wgl.subjectPhysikger
wgl.typeZeitschriftenartikelger
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