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Aromatic nonpolar organogels for efficient and stable perovskite green emitters

Cited 13 time in Web of Science Cited 12 time in Scopus
Issue Date
2020-09
Citation
Nature Communications, Vol.11 No.1, p. 4638
Abstract
Existing gels are mostly polar, whose nature limits their role in soft devices. The intermolecular interactions of nonpolar polymer-liquid system are typically weak, which makes the gel brittle. Here we report highly soft and transparent nonpolar organogels. Even though their elements are only carbon and hydrogen, their elastic modulus, transparency, and stretchability are comparable to common soft hydrogels. A key strategy is introducing aromatic interaction into the polymer-solvent system, resulting in a high swelling ratio that enables efficient plasticization of the polymer networks. As a proof of applicability, soft perovskite nanocomposites are synthesized, where the nonpolar environment of organogels enables stable formation and preservation of highly concentrated perovskite nanocrystals, showing high photoluminescence efficiency (similar to 99.8%) after water-exposure and environmental stabilities against air, water, acid, base, heat, light, and mechanical deformation. Their superb properties enable the demonstration of soft electroluminescent devices that stably emit bright and pure green light under diverse deformations.
ISSN
2041-1723
URI
https://hdl.handle.net/10371/179135
DOI
https://doi.org/10.1038/s41467-020-18383-y
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