https://scholars.lib.ntu.edu.tw/handle/123456789/606857
標題: | A tale of two organic small molecular hole transporting materials: Showing same extended shelf-life but very different efficiency of inverted MAPbI3 perovskite solar cells | 作者: | Kakekochi V Kuo D.-W Chen C.-T Wolcan E CHAO-TSEN CHEN Dalimba U.K. |
關鍵字: | Conjugation;Hydrophobicity;Inverted perovskite solar cells;Non-doped molecules;Organic hole transporting material;Stability;Efficiency;Grain boundaries;Hole mobility;Moisture;Nickel compounds;Open circuit voltage;Perovskite;Fill-factor;Hole-transporting materials;Inverted perovskite solar cell;Molecular holes;Non-doped;Non-doped molecule;Organic hole transporting materials;Organic small molecular;Perovskite layers;Perovskite solar cells | 公開日期: | 2022 | 卷: | 102 | 來源出版物: | Organic Electronics | 摘要: | This paper mainly discusses the structure-property relationship of two donor-acceptor-donor (D–π–A–π–D) type dopant-free hole transporting materials (HTMs) (TPA-TPy and TPA-Py-PTZ) comprising primarily of 2,4,6-trisubstituted pyridine as the acceptor core and 4,4′-dimethoxytriphenylamine as the peripheral donor groups and their use in p-i-n perovskite solar cells (PVSCs). Compared to inferior TPA-Py-PTZ, TPA-TPy has a superior hole extraction and hole transport at the HTM/perovskite interface. The pinhole-free, smooth and dense, fully covered and well-crystallized MAPbI3 perovskite layer on TPA-TPy reduces the carrier recombination and substantially improves the short circuit current density (JSC), open circuit voltage (VOC), and the fill-factor (FF) of MAPbI3 PVSCs. The PVSC employing TPA-TPy as HTM exhibits a power conversion efficiency (PCE) of 15.33% with a JSC of 23.69 mA cm?2, a VOC of 0.95 V, and a FF of 68.10%. Especially, both TPA-TPy and TPA-Py-PTZ PVSCs exhibit a better moisture stability than that of NiOx PVSCs. It is because of the hydrophobic nature of TPA-TPy and TPA-Py-PTZ, which enables the formation of MAPbI3 perovskite layer having a larger grain-size, a less grain boundary, and a less infiltration of moisture. ? 2022 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122486378&doi=10.1016%2fj.orgel.2021.106428&partnerID=40&md5=b3c1765abc7f056671fba0cd1ec67f22 https://scholars.lib.ntu.edu.tw/handle/123456789/606857 |
ISSN: | 15661199 | DOI: | 10.1016/j.orgel.2021.106428 |
顯示於: | 化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。