Journal
JOURNAL OF POWER SOURCES
Volume 401, Issue -, Pages 13-19Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2018.08.078
Keywords
2D metal organic framework nanosheets; Tellurophene; Exfoliation; Organic solar cells; Electron extraction layer
Funding
- National Key R&D Program of China [2018FYA0305800]
- NSFC [21774130, 21574135]
- Beijing Natural Science Foundation [2162043]
- Key Research Program of Frontier Sciences,CAS [QYZDB-SSW-JSC046]
- Key Research Program of the Chinese Academy of Sciences [XDPB08-2]
- One Hundred Talents Program of Chinese Academy of Sciences
- University of Chinese Academy of Sciences
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Two-dimensional metal organic framework nanosheets demonstrate various applications in chemical separation and purification, biological recognition and sensing, catalysis, and optoelectronics, though the exfoliation of metal organic framework nanosheets with good dispersibility are challenging. Here we report an efficient method for exfoliating a novel tellurophene-based two-dimensional metal organic framework with a branched polymer surfactant polyethylenimine ethoxylate to prepare single- and few-layer nanosheets. Furthermore, the hybrid ink is directly integrated as an electron extraction layer for high-performance organic solar cells, which exhibits enhanced power conversion efficiency in comparison to the polyethylenimine ethoxylate-based ones due to the suppressed charge recombination, tunable work function and improved conductivity. This contribution not only reports a novel method to prepare stable two-dimensional metal organic framework nanosheets but also opens an avenue for their applications in solar cells.
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