掺杂剂
材料科学
钙钛矿(结构)
光电子学
图层(电子)
纳米技术
兴奋剂
能量转换效率
化学工程
工程类
作者
Changlong Yin,Jianfeng Lu,Yachao Xu,Yikai Yun,Kai Wang,Jiewei Li,Liangcong Jiang,Jingsong Sun,Andrew D. Scully,Fuzhi Huang,Jie Zhong,Jianpu Wang,Yi Cheng,Tianshi Qin,Wei Huang
标识
DOI:10.1002/aenm.201800538
摘要
Abstract Despite the recent unprecedented development of efficient dopant‐free hole transporting materials (HTMs) for high‐performance perovskite solar cells (PSCs) on small‐area devices (≤0.1 cm 2 ), low‐cost dopant‐free HTMs for large‐area PSCs (≥1 cm 2 ) with high power conversion efficiencies (PCEs) have rarely been reported. Herein, two novel HTMs, 3,3′,6,6′ (or 2,2′,7,7′)‐tetrakis( N , N ′‐di‐p‐methoxyphenylamine)‐ N , N ′‐bicarbazole (3,6 BCz‐OMeTAD or 2,7 BCz‐OMeTAD), are synthesized via an extremely simple route from very cheap raw materials. Owing to their excellent film‐forming abilities and matching energy levels, 3,6 BCz‐OMeTAD and 2,7 BCz‐OMeTAD can be successfully employed as a perfect ultrathin (≈30 nm) hole transporting layer in large‐area PSCs up to 1 cm 2 . The 3,6 BCz‐OMeTAD and 2,7 BCz‐OMeTAD based large‐area PSCs show highest PCEs up to 17.0% and 17.6%, respectively. More importantly, high performance large‐area PSCs based on 2,7 BCz‐OMeTAD retain 90% of the initial efficiency after 2000 h storage in an ambient environment without encapsulation.
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