由混合聚合物电子传输层实现的性能改进的环境稳定型钙钛矿太阳能电池。
Improved Ambient-Stable Perovskite Solar Cells Enabled by a Hybrid Polymeric Electron-Transporting Layer.
作者信息
Zhu Zonglong, Chueh Chu-Chen, Zhang Guangye, Huang Fei, Yan He, Jen Alex K-Y
机构信息
Department of Materials Science and Engineering, Department of Chemistry, University of Washington, Seattle, WA, 98195, USA.
Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
出版信息
ChemSusChem. 2016 Sep 22;9(18):2586-2591. doi: 10.1002/cssc.201600921. Epub 2016 Aug 26.
In this work, an efficient inverted perovskite solar cell with decent ambient stability is successfully demonstrated by employing an n-type polymer, poly{[N,N'-bis(2-octyldodecyl)-1,4,5,8-naphthalene diimide-2,6-diyl]-alt-5,5'-(2,2'-bithiophene)} (N2200), as the electron-transporting layer (ETL). The device performance can be further enhanced from a power conversion efficiency (PCE) of 15 to 16.8 % by tailoring the electronic properties of N2200 with a polymeric additive, poly[9,9-bis(6'-(N,N-diethylamino)propyl)-fluorene-alt-9,9-bis(3-ethyl(oxetane-3-ethyloxy)-hexyl) fluorene] (PFN-Ox). More importantly, the device derived from this hybrid ETL can maintain good ambient stability inherent from the pristine N2200 ETL, for which 60-70 % of initial PCE can be retained after being stored in air with 10-20 % humidity for 45 days.
在这项工作中，通过使用一种n型聚合物聚{[N,N'-双(2-辛基十二烷基)-1,4,5,8-萘二亚胺-2,6-二基]-alt-5,5'-(2,2'-联噻吩)}（N2200）作为电子传输层（ETL），成功展示了一种具有良好环境稳定性的高效倒置钙钛矿太阳能电池。通过用聚合物添加剂聚[9,9-双(6'-(N,N-二乙氨基)丙基)-芴-alt-9,9-双(3-乙基(氧杂环丁烷-3-乙氧基)-己基)芴]（PFN-Ox）调整N2200的电子性质，器件性能可以从15%的功率转换效率（PCE）进一步提高到16.8%。更重要的是，由这种混合ETL制成的器件可以保持原始N2200 ETL固有的良好环境稳定性，在湿度为10%-20%的空气中储存45天后，其初始PCE的60%-70%可以保留下来。
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