钙钛矿(结构)
碘苯
图层(电子)
材料科学
兴奋剂
掺杂剂
化学
化学工程
光电子学
纳米技术
催化作用
有机化学
工程类
作者
Zhineng Lan,Hao Huang,S. X. Du,Yi Lu,Changxu Sun,Yingying Yang,Qiang Zhang,Yi Suo,Shujie Qu,Min Wang,Xinxin Wang,Luyao Yan,Peng Cui,Zhiguo Zhao,Meicheng Li
标识
DOI:10.1002/anie.202402840
摘要
The doped organic hole transport layer (HTL) is crucial for achieving high-efficiency perovskite solar cells (PSCs). However, the traditional doping strategy undergoes a time-consuming and environment-dependent oxidation process, which hinders the technology upgrades and commercialization of PSCs. Here, we reported a new strategy by introducing a cascade reaction in traditional doped Spiro-OMeTAD, which can simultaneously achieve rapid oxidation and overcome the erosion of perovskite by 4-tert-butylpyridine (tBP) in organic HTL. The ideal dopant iodobenzene diacetate was utilized as the initiator that can react with Spiro to generate Spiro⋅+ radicals quickly and efficiently without the participation of ambient air, with the byproduct of iodobenzene (DB). Then, the DB can coordinate with tBP through a halogen bond to form a tBP-DB complex, minimizing the sustained erosion from tBP to perovskite. Based on the above cascade reaction, the resulting Spiro-based PSCs have a champion PCE of 25.76 % (certificated of 25.38 %). This new oxidation process of HTL is less environment-dependent and produces PSCs with higher reproducibility. Moreover, the PTAA-based PSCs obtain a PCE of 23.76 %, demonstrating the excellent applicability of this doping strategy on organic HTL.
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