University of Oulu

Tuomo Siponkoski, Mikko Nelo, Heli Jantunen, Jari Juuti, A printable P(VDF-TrFE)-PZT Composite with Very High Piezoelectric Coefficient, Applied Materials Today, Volume 20, 2020, 100696, ISSN 2352-9407,

A printable P(VDF-TrFE)-PZT composite with very high piezoelectric coefficient

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Author: Siponkoski, Tuomo1; Nelo, Mikko1; Jantunen, Heli1;
Organizations: 1Microelectronics Research Unit, P.O. Box 4500, 90014, University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
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Language: English
Published: Elsevier, 2020
Publish Date: 2022-05-22


In this paper a significant advance in the piezoelectric properties of poly(vinylidenefluoride-trifluoroethylene)-lead zirconate titanate (P(VDF-TrFE)-PZT) composite ink has been achieved by coating the ceramic particles prior to formulation with a polymeric surfactant containing carboxylic acid anhydride functional groups and the piezoelectric response of a unimorph cantilever is further enhanced by introducing a reinforced substrate. The measured effective transverse piezoelectric coefficient (d31eff) was -56 pm/V, which is 3.3 times higher than that of the same composite without surfactant and is the highest reported for a printable polymer-ceramic composite. In addition, the printability of the ink and dispersion of the ceramic particles was enhanced. The samples were fabricated by stencil printing of a single piezoelectric layer on a flexible PET substrate followed by curing at only 120°C, thus enabling utilization on a wide range of substrates. The results also show the improved particle dispersion and layer quality in 0—3 composite inks with surfactant added and the effect of sample structure and mechanical coupling between the hard ceramic particles and the soft matrix. The developed composite ink is suitable, for example, in sensors in printed wearable and portable electronics.

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Series: Applied materials today
ISSN: 2352-9407
ISSN-E: 2352-9415
ISSN-L: 2352-9407
Volume: 20
Article number: 100696
DOI: 10.1016/j.apmt.2020.100696
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
216 Materials engineering
Funding: The authors gratefully acknowledge funding of Academy of Finland (decision n:o 285219) and Tekes (FIMECC program, Hybrid materials project 2105/31/2013). The author TS acknowledges the Tauno Tönning, Walter Ahlström, Emil Aaltonen, KAUTE, Riitta and Jorma J. Takanen and Ulla Tuominen foundations as well as Infotech Oulu Doctoral Program for supporting this study.
Academy of Finland Grant Number: 285219
Detailed Information: 285219 (Academy of Finland Funding decision)
Copyright information: © 2020 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license