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Title: | Organic ammonium iodide salts as passivation for buried interface enables efficient and stable NiOx based p-i-n perovskite solar cells | Authors: | LAMMAR, Stijn VAN GOMPEL, Wouter LENAERS, Stijn Mertens, Martijn BOYEN, Hans-Gerd DESTA, Derese Hadipour, Afshin LUTSEN, Laurence VANDERZANDE, Dirk KRISHNA, Anurag Abdulraheem, Yaser AERNOUTS, Tom POORTMANS, Jef |
Issue Date: | 2022 | Publisher: | Source: | Journal of Materials Chemistry C, | Series/Report: | Celebrating ten years of Journal of Materials Chemistry C | Status: | Early view | Abstract: | The interfaces between a halide perovskite absorber film and its charge transporting layers have been identified as one of the key bottlenecks for achieving high performance and stability. Herein we report a benzothieno[3,2-b]benzothiophene (BTBT) derivative and a carbazole derivative to passivate the interface between the sputtered NiOx and the halide perovskite in p-in perovskite solar cells (PSCs). The treatment of the NiOx with the BTBT derivative significantly enhances the open-circuit voltage (Voc), boosting the champion power conversion efficiency (PCE) from 16.6% to 18.6%. We carry out an in-depth analysis of the interface employing a lift-off procedure revealing that the BTBT molecules reside at the bottom interface and successfully suppress a (redox) reaction at this interface. As a result of the improved interface quality, the stability of the PSCs is superior under maximum power point (MPP) conditions and in ambient conditions, retaining 89% of the initial PCE after 250 hours at 25% relative humidity and 95% after 1 hour under continuous MPP tracking (MPPT). | Document URI: | http://hdl.handle.net/1942/39267 | ISSN: | 2050-7526 | e-ISSN: | 2050-7534 | DOI: | 10.1039/D2TC04215K | ISI #: | 000911834100001 | Rights: | The Royal Society of Chemistry 2023 | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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Organic ammonium iodide salts as passivation for buried interface enables efficient and stable NiOx based p-i-n perovskite solar cells.pdf Restricted Access | Early view | 1.89 MB | Adobe PDF | View/Open Request a copy |
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