期刊
ADVANCED FUNCTIONAL MATERIALS
卷 29, 期 28, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201900572
关键词
heat sensing; ionic thermodiffusion; plasmonic heating; pyroelectric copolymer
类别
资金
- Swedish Foundation for Strategic Research
- Swedish Research Council
- AForsk Foundation
- Wenner-Gren Foundations
- Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) [200900971]
Sensors for monitoring temperature, heat flux, and thermal radiation are essential for applications such as electronic skin. While pyroelectric and thermoelectric effects are suitable candidates as functional elements in such devices, both concepts show individual drawbacks in terms of zero equilibrium signals for pyroelectric materials and small or slow response of thermoelectric materials. Here, these drawbacks are overcome by introducing the concept of thermodiffusion-assisted pyroelectrics, which combines and enhances the performance of pyroelectric and ionic thermoelectric materials. The presented integrated concept provides both rapid initial response upon heating and stable synergistically enhanced signals upon prolonged exposure to heat stimuli. Likewise, incorporation of plasmonic metasurfaces enables the concept to provide both rapid and stable signals for radiation-induced heating. The performance of the concept and its working mechanism can be explained by ion-electron interactions at the interface between the pyroelectric and ionic thermoelectric materials.
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