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Porphyrin Dimers as Hole-Transporting Layers for High-Efficiency and Stable Perovskite Solar Cells
ACS Energy Letters ( IF 22.0 ) Pub Date : 2018-06-12 00:00:00 , DOI: 10.1021/acsenergylett.8b00607
Yu-Hsien Chiang,Hsien-Hsin Chou,Wei-Ting Cheng,Yun-Ru Li,Chen-Yu Yeh,Peter Chen

In this work, we demonstrate the optimum utilization of porphyrin-based hole-transporting materials (HTMs), namely, WT3 and YR3, for fabricating triple-cation perovskite solar cells. These newly designed HTMs based on dimeric porphyrin structure exhibit a good HOMO level, high hole mobility, and great charge extraction ability for perovskite solar cells. Moreover, through proper molecular engineering, dimeric porphyrins WT3 and YR3 are capable of forming films free of pinholes, with more uniform and dense surfaces leading to enhanced device performance. Perovskite solar cells using a WT3 HTM achieve a power conversion efficiency (PCE) of 19.44%, which is higher than that using YR3 (17.84%) and even spiro-OMeTAD (18.62%) under 1 Sun AM 1.5G illumination. In addition, WT3-based devices show better stability than spiro-based counterparts under moisture, light-soaking, and thermal testing conditions.

中文翻译:

卟啉二聚体作为高效稳定的钙钛矿太阳能电池的空穴传输层。

在这项工作中,我们证明了基于卟啉的空穴传输材料(HTM)WT3YR3的最佳利用,可用于制造三阳离子钙钛矿型太阳能电池。这些基于二聚卟啉结构的新设计的HTM对钙钛矿型太阳能电池表现出良好的HOMO水平,高空穴迁移率和强大的电荷提取能力。而且,通过适当的分子工程,二聚卟啉WT3YR3能够形成没有针孔的膜,具有更均匀和致密的表面,从而提高了器件性能。使用WT3 HTM的钙钛矿太阳能电池的功率转换效率(PCE)为19.44%,高于使用YR3的功率转换效率(17.84%),甚至在1个Sun AM 1.5G光照下甚至还有spiro-OMeTAD(18.62%)。另外,基于WT3的设备在潮湿,浸光和热测试条件下显示出比基于螺线的同类产品更好的稳定性。
更新日期:2018-06-12
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