Shanshan Zhang, Martin Stolterfoht, Ardalan Armin, Qianqian Lin, Fengshuo Zu, Jan Sobus, Hui Jin, Norbert Koch, Paul Meredith, Paul L. Burn, Dieter Neher
- Engineering the interface between the perovskite absorber and the charge-transporting layers has become an important method for improving the charge extraction and open-circuit voltage (V-OC) of hybrid perovskite solar cells. Conjugated polymers are particularly suited to form the hole-transporting layer, but their hydrophobicity renders it difficult to solution-process the perovskite absorber on top. Herein, oxygen plasma treatment is introduced as a simple means to change the surface energy and work function of hydrophobic polymer interlayers for use as p-contacts in perovskite solar cells. We find that upon oxygen plasma treatment, the hydrophobic surfaces of different prototypical p-type polymers became sufficiently hydrophilic to enable subsequent perovskite junction processing. In addition, the oxygen plasma treatment also increased the ionization potential of the polymer such that it became closer to the valance band energy of the perovskite. It was also found that the oxygen plasma treatment could increase the electricalEngineering the interface between the perovskite absorber and the charge-transporting layers has become an important method for improving the charge extraction and open-circuit voltage (V-OC) of hybrid perovskite solar cells. Conjugated polymers are particularly suited to form the hole-transporting layer, but their hydrophobicity renders it difficult to solution-process the perovskite absorber on top. Herein, oxygen plasma treatment is introduced as a simple means to change the surface energy and work function of hydrophobic polymer interlayers for use as p-contacts in perovskite solar cells. We find that upon oxygen plasma treatment, the hydrophobic surfaces of different prototypical p-type polymers became sufficiently hydrophilic to enable subsequent perovskite junction processing. In addition, the oxygen plasma treatment also increased the ionization potential of the polymer such that it became closer to the valance band energy of the perovskite. It was also found that the oxygen plasma treatment could increase the electrical conductivity of the p-type polymers, facilitating more efficient charge extraction. On the basis of this concept, inverted MAPbI(3) perovskite devices with different oxygen plasma-treated polymers such as P3HT, P3OT, polyTPD, or PTAA were fabricated with power conversion efficiencies of up to 19%.…
MetadatenAuthor details: | Shanshan ZhangORCiD, Martin StolterfohtORCiDGND, Ardalan ArminORCiD, Qianqian Lin, Fengshuo Zu, Jan Sobus, Hui Jin, Norbert KochORCiD, Paul MeredithORCiD, Paul L. BurnORCiD, Dieter NeherORCiDGND |
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DOI: | https://doi.org/10.1021/acsami.8b02503 |
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ISSN: | 1944-8244 |
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Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/29856202 |
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Title of parent work (English): | ACS applied materials & interfaces |
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Publisher: | American Chemical Society |
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Place of publishing: | Washington |
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Publication type: | Article |
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Language: | English |
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Date of first publication: | 2018/06/27 |
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Publication year: | 2018 |
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Release date: | 2021/11/17 |
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Tag: | organohalide lead perovskites; oxygen plasma; solar cells; surface wetting; transport layer; work function |
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Volume: | 10 |
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Issue: | 25 |
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Number of pages: | 7 |
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First page: | 21681 |
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Last Page: | 21687 |
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Funding institution: | Chinese Scholarship CouncilChina Scholarship Council; Australian Government through the Australian Renewable Energy Agency (ARENA) Australian Centre for Advanced PhotovoltaicsAustralian Renewable Energy Agency (ARENA); HyPerCells, a joint graduate school of the University of Potsdam; Helmholtz Center Berlin |
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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 / Green Open-Access |
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