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Role of Annealing with Electric Field Toward Improvement of Ferroelectric and Electroactive Properties of PVDF Copolymer and Terpolymer Thin Films.
Roy, Dhrubojyoti; Chakraborty, Mohua; Pattader, Partho Sarathi Gooh; Islam, A K M Maidul; Bandyopadhyay, Dipankar.
Afiliación
  • Roy D; Department of Physics, C V Raman Global University, Bhubaneswar, 752054, India.
  • Chakraborty M; Department of Physics, C V Raman Global University, Bhubaneswar, 752054, India.
  • Pattader PSG; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India.
  • Islam AKMM; Department of Physics, Aliah University, Newtown, Kolkata, West Bengal, 700156, India.
  • Bandyopadhyay D; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India.
Macromol Rapid Commun ; : e2400496, 2024 Aug 05.
Article en En | MEDLINE | ID: mdl-39101719
ABSTRACT
The present study elucidates the role of annealing with electric field on lamellar crystalline structure and molecular orientation of polymer chains in ferroelectric copolymer (P(VDF-TrFE)) and ferroelectric terpolymer (P(VDF-TrFE-CFE)) spin-coated thin films. The ferroelectric polymer thin films annealed under an electric field support the growth of nanostructure with an "edge-on" lamellar crystalline structure having in-plane molecular chain orientation. The poled P(VDF-TrFE) thin films have higher remnant polarization (Pr) ≈6.2 µC cm-2 and saturation polarization (Ps) ≈8.2 µC cm-2 at an applied electric field of 250 MV/m compared to unpoled thin films having Pr ≈4.7 and Ps ≈6.2 µC cm-2. Also, poled P(VDF-TrFE) thin films show lower coercive field (Ec) ≈94 MV/m compared to an unpoled thin film having Ec ≈105 MV/m. Similarly, poled PVDF-TrFE-CFE thin film shows better ferroelectric properties having Pr ≈0.4 and Ps ≈5.7 µC cm-2 at an applied electric field of 200 MV m-1 compared to unpoled thin films having Pr ≈0.4 and Ps ≈4.1 µC cm-2. The storage energy efficiency of unpoled and poled P(VDF-TrFE-CFE) thin films is measured to be ≈75% and 80%. Annealing of ferroelectric P(VDF-TrFE) polymer thin films under an electric field demonstrates improved ferroelectric and electroactive properties.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Macromol Rapid Commun Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Macromol Rapid Commun Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Alemania