Ferroelectric Polymer Nanotubes with Large Dielectric Constants for Potential All-Organic Electronic Devices
✍ Scribed by Chang-Chun Wang; Qun-Dong Shen; Shao-Chun Tang; Qiang Wu; Hui-Min Bao; Chang-Zheng Yang; Xi-Qun Jiang
- Book ID
- 102498352
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 235 KB
- Volume
- 29
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
To fabricate ferroelectric ultrathin polymer films with large dielectric constants for potential all‐organic electronic devices, ferroelectric polymer nanotubes and a composite of the nanotubes with a dispersed organic semiconductor have been fabricated by template‐assisted methods. The ferroelectricity drops markedly in spin‐coated ultrathin films less than 100 nm thick, whereas P(VDF‐TrFE) nanotubes with a wall thickness of a few ten nm sustain ferroelectricity. The composite nanotubes exhibit a giant dielectric constant as a result of significantly enhanced interface polarization between the nanosized fillers and the polymer matrix. They could be of practical use in supercapacitors, optoelectronic devices, and sensors.
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