Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Soluble poly(4-fluorostyrene): a high-performance dielectric electret for organic transistors and memories

Author affiliations

Abstract

Electrets, referring to an insulating dielectric material carrying quasi-permanent neat charges, are attracting interest for their potential wide applications in electronic devices, filtration fabrics and biological/medical sterilization. Here we report a high-performance, optical transparent and solution-processible polymer electret, atactic poly(4-fluorostyrene) (FPS), synthesized by radical polymerization. The deep bulk traps of FPS could stably accommodate charges, and the hydrophobicity of this material prevents moisture invasion in ambient environments, both of which contribute to the high environmental-stability. Subsequently, the solution processed FPS film with a high sheet charge density of 6.8 × 1012 cm−2, high dielectric strength, good thermal stability and decreased leakage current is introduced as a gate dielectric for organic field effect transistors (OFETs) and non-volatile memories. Using FPS-coated SiO2 as the gate dielectric and 2,7-didodecyl[1]benzothieno[3,2-b][1]benzothiophene (C12-BTBT) as the semiconductor, OFETs can work with a high mobility of 11.2 cm2 V−1 s−1 and on/off ratio of 107, along with a large memory window of 108 V, and enhanced memory stability over one month during direct exposure to ambient air. Finally, we use a conjugated polymer blended with FPS to show the general improvement of OFET performance by our FPS electret.

Graphical abstract: Soluble poly(4-fluorostyrene): a high-performance dielectric electret for organic transistors and memories

Back to tab navigation

Supplementary files

Article information


Submitted
06 Feb 2020
Accepted
17 Apr 2020
First published
17 Apr 2020

Mater. Horiz., 2020, Advance Article
Article type
Communication

Soluble poly(4-fluorostyrene): a high-performance dielectric electret for organic transistors and memories

Y. Zhu, Y. Fan, S. Li, P. Wei, D. Li, B. Liu, D. Cui, Z. Zhang, G. Li, Y. Nie and G. Lu, Mater. Horiz., 2020, Advance Article , DOI: 10.1039/D0MH00203H

Social activity

Search articles by author

Spotlight

Advertisements