用于高效稳定钙钛矿太阳能电池的N-乙基咔唑封端的螺型空穴传输材料。
A N-Ethylcarbazole-Terminated Spiro-Type Hole-Transporting Material for Efficient and Stable Perovskite Solar Cells.
作者信息
Han Mingyuan, Liang Yongpeng, Chen Jianlin, Zhang Xianfu, Ghadari Rahim, Liu Xuepeng, Wu Nan, Wang Ying, Zhou Ying, Ding Yong, Cai Molang, Chen Haibin, Dai Songyuan
机构信息
School of New Energy, North China Electric Power University, Beijing, 102206, P. R. China.
Computational Chemistry Laboratory, Department, of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, 5166616471, Iran.
出版信息
ChemSusChem. 2022 Oct 21;15(20):e202201485. doi: 10.1002/cssc.202201485. Epub 2022 Sep 19.
The development of stable and efficient hole-transporting materials (HTMs) is critical for the commercialization of perovskite solar cells (PSCs). Herein, a novel spiro-type HTM was designed and synthesized where N-ethylcarbazole-terminated groups fully substituted the methoxy group of spiro-OMeTAD, named spiro-carbazole. The developed molecule exhibited a lower highest occupied molecular orbital level, higher hole mobility, and extremely high glass transition temperature (T =196 °C) compared with spiro-OMeTAD. PSCs with the developed molecule exhibited a champion power conversion efficiency (PCE) of 22.01 %, which surpassed traditional spiro-OMeTAD (21.12 %). Importantly, the spiro-carbazole-based device had dramatically better thermal, humid, and long-term stability than spiro-OMeTAD.
开发稳定高效的空穴传输材料（HTM）对于钙钛矿太阳能电池（PSC）的商业化至关重要。在此，设计并合成了一种新型螺环型HTM，其中N-乙基咔唑封端基团完全取代了螺环-OMeTAD的甲氧基，命名为螺环咔唑。与螺环-OMeTAD相比，所开发的分子表现出更低的最高占据分子轨道能级、更高的空穴迁移率和极高的玻璃化转变温度（T = 196°C）。采用所开发分子的PSC展现出22.01%的最佳功率转换效率（PCE），超过了传统的螺环-OMeTAD（21.12%）。重要的是，基于螺环咔唑的器件在热稳定性、湿度稳定性和长期稳定性方面比螺环-OMeTAD有显著提升。
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