期刊
ORGANIC ELECTRONICS
卷 88, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.orgel.2020.105972
关键词
Perovskite solar cells; TaCl5 doping; SnO2; Electron-transporting material
资金
- National Key R&D Program of China [2016YFA0202402]
- Natural Science Foundation of China [61674109]
- Natural Science Foundation of Jiangsu Province [BK20170059]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- 111 Project of The State Administration of Foreign Experts Affairs of China
Utilizing TaCl5-doped SnO2 ETL can enhance open-circuit voltage and power conversion efficiency, leading to the fabrication of high-performance perovskite solar cells.
Organic-inorganic hybrid perovskite solar cells (PSCs) possess the promising potential to substitute photovoltaic technologies in the traditional model. The modified SnO2 as an electron-transporting layer (ETL) has been studied extensively because of its excellent properties. Herein, we implemented the TaCl5 doped SnO2 ETL in the n-i-p structure perovskite solar cells. The doped SnO2 solution was demonstrated the characterization of neutral power of value and hydrophobicity. The conduction band of changed ETLs shifted downward by 0.26 eV resulting in the efficient electron transfer. Furthermore, the doped SnO2 films affect the perovskite crystallite size with passivated traps and reduced nonradiative recombination loss. After employing TaCl5-doped SnO2 ETL, the open-circuit voltage enhances from 0.97 to 1.08 V and a united power conversion efficiency increases from 16.38% to 18.23% achieved when adopted 1.0 wt% doped TaCl5-SnO2 TEL. The developed doping method provides an effective method to passivate SnO2 for fabricating high-performance perovskite solar cells.
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