Quinuclidinium salt ferroelectric thin-film with duodecuple-rotational polarization-directions

Ferroelectric thin-films are highly desirable for their applications on energy conversion, data storage and so on. Molecular ferroelectrics had been expected to be a better candidate compared to conventional ferroelectric ceramics, due to its simple and low-cost film-processability. However, most mo...

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Bibliographic Details
Published in:Nature communications 2017-04, Vol.8 (1), p.14934-14934, Article 14934
Main Authors: You, Yu-Meng, Tang, Yuan-Yuan, Li, Peng-Fei, Zhang, Han-Yue, Zhang, Wan-Ying, Zhang, Yi, Ye, Heng-Yun, Nakamura, Takayoshi, Xiong, Ren-Gen
Format: Article
Language:English
Subjects:
639/638/263
639/638/440
Ferroelectrics
Humanities and Social Sciences
multidisciplinary
Science
Science (multidisciplinary)
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Summary:Ferroelectric thin-films are highly desirable for their applications on energy conversion, data storage and so on. Molecular ferroelectrics had been expected to be a better candidate compared to conventional ferroelectric ceramics, due to its simple and low-cost film-processability. However, most molecular ferroelectrics are mono-polar-axial, and the polar axes of the entire thin-film must be well oriented to a specific direction to realize the macroscopic ferroelectricity. To align the polar axes, an orientation-controlled single-crystalline thin-film growth method must be employed, which is complicated, high-cost and is extremely substrate-dependent. In this work, we discover a new molecular ferroelectric of quinuclidinium periodate, which possesses six-fold rotational polar axes. The multi-axes nature allows the thin-film of quinuclidinium periodate to be simply prepared on various substrates including flexible polymer, transparent glasses and amorphous metal plates, without considering the crystallinity and crystal orientation. With those benefits and excellent ferroelectric properties, quinuclidinium periodate shows great potential in applications like wearable devices, flexible materials, bio-machines and so on. Molecular ferroelectric crystals hold promise in data storage applications, yet their preparations by maximizing molecular polarization are challenging. Here, You et al . report quinuclidinium periodate with six rotation axes and grow them in macroscopic ferroelectric thin films via a solution process.
ISSN:2041-1723
2041-1723
DOI:10.1038/ncomms14934