دورية أكاديمية
Suppressing Interfacial Charge Recombination in Electron-Transport-Layer-Free Perovskite Solar Cells to Give an Efficiency Exceeding 21 %
| العنوان: | Suppressing Interfacial Charge Recombination in Electron-Transport-Layer-Free Perovskite Solar Cells to Give an Efficiency Exceeding 21 % |
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| المؤلفون: | Wu W.-Q, Liao J.-F, Zhong J.-X, Xu Y.-F, Wang L, Huang J |
| المصدر: | Angewandte Chemie - International Edition, 59(47) |
| بيانات النشر: | Wiley-VCH Verlag |
| سنة النشر: | 2020 |
| المجموعة: | Carolina Digital Repository (UNC - University of North Carolina) |
| مصطلحات موضوعية: | charge tunneling, amorphous metal oxyhydroxide, interfacial modification, perovskite solar cells, charge recombination |
| الوصف: | The performances of electron-transport-layer (ETL)-free perovskite solar cells (PSCs) are still inferior to ETL-containing devices. This is mainly due to severe interfacial charge recombination occurring at the transparent conducting oxide (TCO)/perovskite interface, where the photo-injected electrons in the TCO can travel back to recombine with holes in the perovskite layer. Herein, we demonstrate for the first time that a non-annealed, insulating, amorphous metal oxyhydroxide, atomic-scale thin interlayer (ca. 3 nm) between the TCO and perovskite facilitates electron tunneling and suppresses the interfacial charge recombination. This largely reduced the interfacial charge recombination loss and achieved a record efficiency of 21.1 % for n-i-p structured ETL-free PSCs, outperforming their ETL-containing metal oxide counterparts (18.7 %), as well as narrowing the efficiency gap with high-efficiency PSCs employing highly crystalline TiO2 ETLs. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | https://doi.org/10.17615/jch8-5684Test; https://cdr.lib.unc.edu/downloads/9p290m96p?file=thumbnailTest; https://cdr.lib.unc.edu/downloads/9p290m96pTest |
| DOI: | 10.17615/jch8-5684 |
| الإتاحة: | https://doi.org/10.17615/jch8-5684Test https://cdr.lib.unc.edu/downloads/9p290m96p?file=thumbnailTest https://cdr.lib.unc.edu/downloads/9p290m96pTest |
| رقم الانضمام: | edsbas.F83C1CC4 |
| قاعدة البيانات: | BASE |
| DOI: | 10.17615/jch8-5684 |
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