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dc.contributorVirginia Tech
dc.contributor.authorWohlgenannt, M.
dc.contributor.authorGraupner, W.
dc.contributor.authorLeising, G.
dc.contributor.authorVardeny, Z. V.
dc.date.accessioned2013-12-10T17:31:20Z
dc.date.available2013-12-10T17:31:20Z
dc.date.issued1999-04-19
dc.identifier.citationWohlgenannt, M ; Graupner, W ; Leising, G ; et al., Apr 19, 1999. “Photogeneration action spectroscopy of neutral and charged excitations in films of a ladder-type poly(para-phenylene),” PHYSICAL REVIEW LETTERS 82(16): 3344-3347. DOI: 10.1103/PhysRevLett.82.3344en_US
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/10919/24516
dc.description.abstractThe photogeneration quantum efficiency action spectra of long-lived neutral and charged excitations in films of a ladder-type poly(para-phenylene) were measured. We found that both tripler and polaron action spectra show, in addition to a step function increase at the optical gap, a monotonic rise at higher energies. For triplets this rise is explained by singlet exciton fission into triplet pairs from which the triplet exciton energy in the gap was obtained; this energy was also confirmed by measuring the weak phosphorescence band. For polarons the photogeneration increase at high energies is modeled by a novel hot electron interchain tunneling process. [S0031-9007(99)08980-2].en_US
dc.language.isoen_US
dc.publisherAmerican Physical Society
dc.subjectpi-conjugated polymers
dc.subjectoptical spectroscopy
dc.subjectelectronic states
dc.subjectelectroluminescence
dc.subjectexcitons
dc.subjectPhysics
dc.titlePhotogeneration action spectroscopy of neutral and charged excitations in films of a ladder-type poly(para-phenylene)
dc.typeArticle - Refereed
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevLett.82.3344
dc.date.accessed2013-12-10
dc.title.serialPhysical Review Letters
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.82.3344


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