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The piezoresponse force microscopy investigation of self-polarization alignment in poly(vinylidene fluoride-co-trifluoroethylene) ultrathin films
- Authors
- Park, Moonkyu; Choi, Yoon-Young; Kim, Jiyoon; Hong, Jongin; Song, Han Wook; Sung, Tae-Hyun; No, Kwangsoo
- Issue Date
- Jan-2012
- Publisher
- Royal Society of Chemistry
- Citation
- Soft Matter, v.8, no.4, pp 1064 - 1069
- Pages
- 6
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Soft Matter
- Volume
- 8
- Number
- 4
- Start Page
- 1064
- End Page
- 1069
- ISSN
- 1744-683X
1744-6848
- Abstract
- We report the self-polarization alignment without external poling in spin-coated poly(vinylidene fluoride-co-trifluoroethylene), P(VDF-TrFE), thin films on transparent and flexible substrates. Piezoresponse force microscopy (PFM) allows the quantitative analysis of preferentially aligned polarization in the ferroelectric thin films. We found that as-received P(VDF-TrFE) thin films on transparent poly(3,4-ethylenedioxythiophene): poly(4-styrenesulfonate) (PEDOT:PSS) electrodes showed stronger self-polarization alignment than those on indium-tin oxide (ITO) electrodes. The relative ratios for the aligned polarization per unit volume on PEDOT: PSS and ITO electrodes were 18.6% and 4%, respectively.
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