Work

Electric-Field-Induced Polarization Enhancement of Vinylidene Fluoride/Trifluoroethylene Copolymer Ultrathin Films

Year: 2011

Type: article

Abstract: We investigated the polarization enhancement in 60-nm-thick vinylidene fluoride/trifluoroethylene (VDF/TrFE) films without thermal annealing by applying repeated bipolar electric pulses. The remnant polarization was 8.4 mC/m 2 in as-spin-coated films and increased to up to 45 mC/m 2 when 10 5 pulses were applied. Although the remnant polarization was half and the coercive field twice those of annealed films, the electrically treated film had a markedly smoother surface than the annealed film. Finally, a 15-nm-thick ferroelectric VDF/TrFE film with low conductivity was fabricated by electric treatment; annealed films with the same thickness experienced a severe short-circuit problem originating from the surface roughness.

Source: Applied Physics Express

DOI: 10.1143/apex.4.071501

Authors: Yuichiro Mabuchi, Takashi Nakajima, Takeo Furukawa, Soichiro Okamura

Institutions: Tokyo University of Science, Kobayasi Institute of Physical Research

Language: English

Topic: Dielectric materials and actuators

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W1995774674

FWCI: 0.873

Cites: 15

Cited by: 21

Related to: 10