Статья

Critical Role of Removing Impurities in Nickel Oxide on High‐Efficiency and Long‐Term Stability of Inverted Perovskite Solar Cells

Shuangjie WangState key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University 710000 Shaanxi Xi'an ChinaYuke LiDepartment Department of Chemistry and Centre for Scientific Modeling and Computation Chinese University of Hong Kong 999077 Shatin, Hong Kong P.R. ChinaJiabao YangState key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University 710000 Shaanxi Xi'an ChinaTong WangState key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University 710000 Shaanxi Xi'an ChinaBowen YangDepartment of Chemistry-Ångström Laboratory Uppsala University 75120 Uppsala SwedenQi CaoState key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University 710000 Shaanxi Xi'an ChinaXingyu PuState key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University 710000 Shaanxi Xi'an ChinaLioz EtgarInstitute of Chemistry Casali Center for Applied Chemistry The Hebrew University of Jerusalem 91904 Jerusalem IsraelJian HanState key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University 710000 Shaanxi Xi'an ChinaJunsong ZhaoState key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University 710000 Shaanxi Xi'an ChinaXuanhua LiState key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University 710000 Shaanxi Xi'an ChinaAnders HagfeldtLaboratory of Photomolecular Science Institute of Chemical Sciences and Engineering School of Basic Sciences Ecole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland

2022en

ABI

Аннотация

Abstract The performance enhancement of inverted perovskite solar cells applying nickel oxide (NiO x ) as the hole transport layer (HTL) has been limited by impurity ions (such as nitrate ions). Herein, we have proposed a strategy to obtain high‐quality NiO x nanoparticles via an ionic liquid‐assisted synthesis method (NiO x ‐IL). Experimental and theoretical results illustrate that the cation of the ionic liquid can inhibit the adsorption of impurity ions on nickel hydroxide through a strong hydrogen bond and low adsorption energy, thereby obtaining NiO x ‐IL HTL with high conductivity and strong hole‐extraction ability. Importantly, the removal of impurity ions can effectively suppress the redox reaction between the NiO x film and the perovskite film, thus slowing down the deterioration of device performance. Consequently, the modified inverted device shows a striking efficiency exceeding 22.62 %, and superior stability maintaining 92 % efficiency at a maximum power point tracking under one sun illumination for 1000 h.

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Идентификаторы

DOI: 10.1002/anie.202116534

Цитирования и источники

Цитирований: 2Использованных источников: 0

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