標題: Natural polymers for disposable organic thin film transistors
作者: Rullyani, Cut
Ramesh, Mohan
Sung, Chao-Feng
Lin, Hong-Cheu
Chu, Chih-Wei
材料科學與工程學系
光電工程學系
顯示科技研究所
Department of Materials Science and Engineering
Department of Photonics
Institute of Display
關鍵字: Organic thin film transistor;Gate dielectric;Chitosan;Natural rubber;DNA sensor
公開日期: 1-Mar-2018
摘要: In this study, eco-friendly PTCDI-C8-based organic thin film transistors (OTFTs) were fabricated by incorporating polymers from renewable sources as gate dielectrics and substrates. Chitosan, a polysaccharide obtained from the deacetylation of chitin, and natural rubber (NR), extracted from natural rubber tree, have good dielectric properties, biocompatibility, and biodegradability. To examine the practical applicability of these materials, we fabricated OTFTs using bilayer PVPy/NR and chitosan/NR films as gate dielectric materials. NR not only improved the insulation properties of the dielectric film but also acted as a surface modifier. The fabricated OTFT incorporating chitosan/NR dielectric operated under a low driving voltage, with values of mu and V-th of 0.027 cm(2)V(-1)s(-1) and 0.83 V, respectively. It also displayed an electrical response in the presence of DNA at different concentrations. Because, chitosan possesses high transparency and good mechanical properties, it can be readily cast to form transparent flexible substrates. Accordingly, a flexible disposable OTFT device was fabricated using PVPy/NR as the dielectric material on chitosan as the substrate. The disposable device exhibited a carrier mobility of 0.011 cm(2)V(-1)s(-1), a value of V-th of 0.83 V, and an on/off ratio of 10(3), while being workable over 100 bending cycles.
URI: http://dx.doi.org/10.1016/j.orgel.2017.12.034
http://hdl.handle.net/11536/144579
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2017.12.034
期刊: ORGANIC ELECTRONICS
Volume: 54
起始頁: 154
結束頁: 160
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