A polar-hydrophobic ionic liquid induces grain growth and stabilization in halide perovskites

The addition of a polar-hydrophobic methylammonium trifluoroacetate ionic liquid tailors the hydrophobicity of halide-perovskite precursor solutions and assists in grain growth. This unique additive also functionalizes the grain boundaries via polarpolar interactions, thereby enhancing the optoelect...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2019-09, Vol.55 (74), p.1159-1162
Main Authors: Liu, Dan, Shao, Zhipeng, Gui, Jianzhou, Chen, Min, Liu, Mingzhen, Cui, Guanglei, Pang, Shuping, Zhou, Yuanyuan
Format: Article
Language:English
Subjects:
Grain boundaries
Grain growth
Hydrophobicity
Ionic liquids
Ions
Optoelectronics
Organic chemistry
Perovskites
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Summary:The addition of a polar-hydrophobic methylammonium trifluoroacetate ionic liquid tailors the hydrophobicity of halide-perovskite precursor solutions and assists in grain growth. This unique additive also functionalizes the grain boundaries via polarpolar interactions, thereby enhancing the optoelectronic properties and chemical stability of perovskites. This study opens the door to the solution hydrophobicity control towards high-performance perovskite devices. A polar-hydrophobic ionic liquid additive enlarges and functionalizes halide perovskite grains.
ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc05490a