期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 49, 页码 17610-17615出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201909291
关键词
metal-organic frameworks (MOFs); hole-transport materials; perovskites; polyoxometalates; solar cells
资金
- National Natural Science Foundation of China [21571042, 21873025, 51603055]
- Natural Science Foundation of Heilongjiang Province [QC2017055]
- China Postdoctoral Science Foundation [2016M601424, 2017T100236]
- Postdoctoral Foundation of Heilongjiang Province [LBH-Z16059]
The controllable oxidation of spiro-OMeTAD and improving the stability of hole-transport materials (HTMs) layer are crucial for good performance and stability of perovskite solar cells (PSCs). Herein, we report an efficient hybrid polyoxometalate@metal-organic framework (POM@MOF) material, [Cu-2(BTC)(4/3)(H2O)(2)](6)[H3PMo12O40](2) or POM@Cu-BTC, for the oxidation of spiro-OMeTAD with Li-TFSI and TBP. When POM@Cu-BTC is introduced to the HTM layer as a dopant, the PSCs achieve a superior fill factor of 0.80 and enhanced power conversion efficiency 21.44 %, as well as improved long-term stability in an ambient atmosphere without encapsulation. The enhanced performance is attributed to the oxidation activity of POM anions and solid-state nanoparticles. Therefore, this research presents a facile way by using hybrid porous materials to accelerate oxidation of spiro-OMeTAD, further improving the efficiency and stability of PSCs.
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