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Thermally Stable, Biocompatible, and Flexible Organic Field‐Effect Transistors and Their Application in Temperature Sensing Arrays for Artificial Skin
Author(s) -
Wu Xiaohan,
Ma Yan,
Zhang Guoqian,
Chu Yingli,
Du Juan,
Zhang Yin,
Li Zhuo,
Duan Yourong,
Fan Zhongyong,
Huang Jia
Publication year - 2015
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201404535
Subject(s) - materials science , biocompatibility , flexible electronics , organic electronics , transistor , polylactic acid , nanotechnology , thermal stability , electronics , organic field effect transistor , dielectric , field effect transistor , electronic skin , optoelectronics , composite material , chemical engineering , polymer , electrical engineering , engineering , voltage , metallurgy
Application of degradable organic electronics based on biomaterials, such as polylactic‐ co ‐glycolic acid and polylactide (PLA), is severely limited by their low thermal stability. Here, a highly thermally stable organic transistor is demonstrated by applying a three‐arm stereocomplex PLA (tascPLA) as dielectric and substrate materials. The resulting flexible transistors are stable up to 200 °C, while devices based on traditional PLA are damaged at 100 °C. Furthermore, charge‐ trapping effect induced by polar groups of the dielectric is also utilized to significantly enhance the temperature sensitivity of the electronic devices. Skin‐like temperature sensor array is successfully demonstrated based on such transistors, which also exhibited good biocompatibility in cytotoxicity measurement. By presenting combined advantages of transparency, flexibility, thermal stability, temperature sensitivity, degradability, and biocompatibility, these organic transistors thus possess a broad applicability such as environment friendly electronics, implantable medical devices, and artificial skin.