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  Localization-dependent charge separation efficiency at an organic/inorganic hybrid interface

Foglia, L., Bogner, L., Wolf, M., & Stähler, J. (2016). Localization-dependent charge separation efficiency at an organic/inorganic hybrid interface. Chemical Physics Letters, 646, 25-30. doi:10.1016/j.cplett.2015.12.050.

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2241278.pdf (Preprint), 348KB
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2241278.pdf
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arXiv:1412.0597v2 [cond-mat.mtrl-sci]
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2015
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Elsevier

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 Creators:
Foglia, Laura1, Author           
Bogner, Lea1, Author           
Wolf, Martin1, Author           
Stähler, Julia1, Author           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              

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 Abstract: By combining complementary optical techniques, photoluminescence and time-resolved excited state absorption, we achieve a comprehensive picture of the relaxation processes in the organic/inorganic hybrid system SP6/ZnO. We identify two long-lived excited states of the organic molecules of which only the lowest energy one, localized on the sexiphenyl backbone of the molecule, is found to efficiently charge separate to the ZnO conduction band or radiatively recombine. The other state, most likely localized on the spiro-linked biphenyl, relaxes only by intersystem crossing to a long-lived, probably triplet state, thus acting as a sink of the excitation and limiting the charge separation efficiency.

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Language(s): eng - English
 Dates: 2015-12-112015-12-222015-12-302016-02-16
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.cplett.2015.12.050
 Degree: -

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Title: Chemical Physics Letters
  Other : Chem. Phys. Lett.
Source Genre: Journal
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Publ. Info: Amsterdam : North-Holland
Pages: 6 Volume / Issue: 646 Sequence Number: - Start / End Page: 25 - 30 Identifier: ISSN: 0009-2614
CoNE: https://pure.mpg.de/cone/journals/resource/954925389241