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, https://doi.org/10.1016/j.apmt.2020.100696
A printable P(VDF-TrFE)-PZT composite with very high piezoelectric coefficient
|Author:||Siponkoski, Tuomo1; Nelo, Mikko1; Jantunen, Heli1;|
1Microelectronics Research Unit, P.O. Box 4500, 90014, University of Oulu, Finland
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020060340322
|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.
Applied materials today
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
216 Materials engineering
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 (Academy of Finland Funding decision)
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