Meysam Raoufi, Ulrich Hörmann, Giovanni Ligorio, Jana Hildebrandt, Michael Pätzel, Thorsten Schultz, Lorena Perdigón-Toro, Norbert Koch, Emil List-Kratochvil, Stefan Hecht, Dieter Neher
- The combined effect of ultraviolet (UV) light soaking and self-assembled monolayer deposition on the work function (WF) of thin ZnO layers and on the efficiency of hole injection into the prototypical conjugated polymer poly(3-hexylthiophen-2,5-diyl) (P3HT) is systematically investigated. It is shown that the WF and injection efficiency depend strongly on the history of UV light exposure. Proper treatment of the ZnO layer enables ohmic hole injection into P3HT, demonstrating ZnO as a potential anode material for organic optoelectronic devices. The results also suggest that valid conclusions on the energy-level alignment at the ZnO/organic interfaces may only be drawn if the illumination history is precisely known and controlled. This is inherently problematic when comparing electronic data from ultraviolet photoelectron spectroscopy (UPS) measurements carried out under different or ill-defined illumination conditions.
MetadatenAuthor details: | Meysam Raoufi, Ulrich HörmannORCiDGND, Giovanni LigorioORCiDGND, Jana HildebrandtORCiDGND, Michael Pätzel, Thorsten SchultzORCiDGND, Lorena Perdigón-ToroORCiDGND, Norbert Koch, Emil List-KratochvilORCiDGND, Stefan HechtORCiDGND, Dieter NeherORCiDGND |
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DOI: | https://doi.org/10.1002/pssa.201900876 |
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ISSN: | 1862-6300 |
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ISSN: | 1862-6319 |
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Title of parent work (English): | Physica Status Solidi. A , Applications and materials science |
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Publisher: | Wiley-VCH |
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Place of publishing: | Weinheim |
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Publication type: | Article |
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Language: | English |
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Date of first publication: | 2020/01/14 |
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Publication year: | 2020 |
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Release date: | 2024/05/06 |
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Tag: | charge injection across hybrid interfaces; energy-level alignments; hybrid metal oxides; organic interfaces |
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Volume: | 217 |
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Issue: | 5 |
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Article number: | 1900876 |
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Number of pages: | 6 |
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First page: | 1 |
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Last Page: | 6 |
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Funding institution: | Deutsche Forschungsgemeinschaft. Grant Number: 182087777 |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
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DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
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Peer review: | Referiert |
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Publishing method: | Open Access / Hybrid Open-Access |
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License (German): | CC-BY - Namensnennung 4.0 International |
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