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Title: Polarization Mechanisms in P(VDF-TrFE) Ferroelectric Thin Films

Abstract

Ferroelectric polymers have amassed tremendous attention due to several attractive properties including high breakdown strength, low dielectric loss, relatively fast charge/discharge rates and greater flexibility than their ceramic counterparts. In order to achieve enhanced energy efficiency in high-energy storage capacitor applications, it is desirable to obtain slim polarization hysteresis loops for ferroelectric polymer films. Here, it has been demonstrated that promotion of large crystallites and γ phase content through thermal annealing provides a cost-effective way to obtain a quasi-linear polarization response in a PVDF co-polymer thin film. The polarization mechanisms underlying a thin hysteresis loop in the thermally annealed film are elucidated using direct experimental insights from in situ synchrotron diffraction with two-dimensional detection. It has been demonstrated that the susceptibility for electric-field-induced structural changes is higher in the defective ferroelectric γ phase than the polar phase β, due to a higher flexibility for accommodation of gauche bond along the carbon chain. In addition, the polymer chains in the γ phase also exhibit a range of different responses depending on their orientations with respect to the electric field. These conclusions are broadly significant as they provide a fundamental basis for rational design of phase assemblages to obtain tailor-made properties inmore » ferroelectric polymer films.« less

Authors:
 [1]; ORCiD logo [1];  [2];  [3];  [3];  [4];  [4]
  1. City Univ. of Hong Kong, Kowloon (Hong Kong)
  2. Alfred Univ., Alfred, NY (United States)
  3. North Carolina State Univ., Raleigh, NC (United States)
  4. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
OSTI Identifier:
1504464
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physica Status Solidi rrl
Additional Journal Information:
Journal Volume: 12; Journal Issue: 10; Journal ID: ISSN 1862-6254
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ferroelectrics; microstructural design; polarization response; polymers; thin films

Citation Formats

Choi, Andrew C., Pramanick, Abhijit, Misture, Scott T., Paterson, Alisa R., Jones, Jacob L., Borkiewicz, Olaf C., and Ren, Yang. Polarization Mechanisms in P(VDF-TrFE) Ferroelectric Thin Films. United States: N. p., 2018. Web. doi:10.1002/pssr.201800340.
Choi, Andrew C., Pramanick, Abhijit, Misture, Scott T., Paterson, Alisa R., Jones, Jacob L., Borkiewicz, Olaf C., & Ren, Yang. Polarization Mechanisms in P(VDF-TrFE) Ferroelectric Thin Films. United States. https://doi.org/10.1002/pssr.201800340
Choi, Andrew C., Pramanick, Abhijit, Misture, Scott T., Paterson, Alisa R., Jones, Jacob L., Borkiewicz, Olaf C., and Ren, Yang. Fri . "Polarization Mechanisms in P(VDF-TrFE) Ferroelectric Thin Films". United States. https://doi.org/10.1002/pssr.201800340. https://www.osti.gov/servlets/purl/1504464.
@article{osti_1504464,
title = {Polarization Mechanisms in P(VDF-TrFE) Ferroelectric Thin Films},
author = {Choi, Andrew C. and Pramanick, Abhijit and Misture, Scott T. and Paterson, Alisa R. and Jones, Jacob L. and Borkiewicz, Olaf C. and Ren, Yang},
abstractNote = {Ferroelectric polymers have amassed tremendous attention due to several attractive properties including high breakdown strength, low dielectric loss, relatively fast charge/discharge rates and greater flexibility than their ceramic counterparts. In order to achieve enhanced energy efficiency in high-energy storage capacitor applications, it is desirable to obtain slim polarization hysteresis loops for ferroelectric polymer films. Here, it has been demonstrated that promotion of large crystallites and γ phase content through thermal annealing provides a cost-effective way to obtain a quasi-linear polarization response in a PVDF co-polymer thin film. The polarization mechanisms underlying a thin hysteresis loop in the thermally annealed film are elucidated using direct experimental insights from in situ synchrotron diffraction with two-dimensional detection. It has been demonstrated that the susceptibility for electric-field-induced structural changes is higher in the defective ferroelectric γ phase than the polar phase β, due to a higher flexibility for accommodation of gauche bond along the carbon chain. In addition, the polymer chains in the γ phase also exhibit a range of different responses depending on their orientations with respect to the electric field. These conclusions are broadly significant as they provide a fundamental basis for rational design of phase assemblages to obtain tailor-made properties in ferroelectric polymer films.},
doi = {10.1002/pssr.201800340},
journal = {Physica Status Solidi rrl},
number = 10,
volume = 12,
place = {United States},
year = {Fri Aug 31 00:00:00 EDT 2018},
month = {Fri Aug 31 00:00:00 EDT 2018}
}

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