Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/94503
標題: Zinc Porphyrin–Ethynylaniline Conjugates as Novel Hole-Transporting Materials for Perovskite Solar Cells with Power Conversion Efficiency of 16.6%
作者: Hsien-Hsin Chou
Yu-Hsien Chiang
Ming-Hsien Li
Po-Shen Shen
Hsiang-Jung Wei
Chi-Lun Mai
Peter Chen
Chen-Yu Yeh
周憲辛
摘要: New zinc porphyrins Y2 and Y2A2 have been utilized in perovskite solar cells specifically as hole-transporting materials (HTMs) rather than photosensitizers. The combination of MAPbI3 as photosensitizer and porphyrins as HTMs is a potential alternative to well-known MAPbI3/Spiro-OMeTAD hybrids owing to high performance and versatility toward molecular engineering of porphyrin families. A high efficiency of 16.60% is achieved by n-butyl tethered Y2 HTM (VOC = 0.99 V; JSC = 22.82 mA cm−2 ) which is comparable to that of Spiro-OMeTAD of 18.03% (VOC = 1.06 V; JSC = 22.79 mA cm−2 ). Both materials possess similar highest occupied molecular orbital level and the same order of magnitude of hole mobility at 10−4 cm2 V−1 s −1 . The slightly poorer performance of 10.55% (VOC = 1.01 V; JSC = 17.80 mA cm−2 ) is obtained for n-dodecyl tethered Y2A2 HTM. This is believed to stem from more surface pinholes when deposited on perovskite leading to an order of magnitude slower mobility
URI: http://hdl.handle.net/11455/94503
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