標題: Control of active semiconducting layer packing in organic thin film transistors through synthetic tailoring of dielectric materials
作者: Singh, Ranjodh
Meena, Jagan Singh
Chang, Yu-Cheng
Wua, Chung-Shu
Ko, Fu-Hsiang
材料科學與工程學系
電子工程學系及電子研究所
Department of Materials Science and Engineering
Department of Electronics Engineering and Institute of Electronics
公開日期: 1-一月-2014
摘要: Apart from the development of new dielectric and semiconductor materials, the semiconductor-dielectric interface study is also very important for the optimum performance of organic thin film transistors (OTFTs). Herein, we have reported the detailed synthesis of a whole new family of dielectric materials which are 1,3,5,7-tetrabromoadamantane; 1,3,5,7-tetrachloroadamanatane; 1,3,5,7-tetraiodoadamantane and 1,3,5,7-tetrauraciladamantane (AdUr(4)). The unique ability of these molecules to undergo supramolecular thin film formation at low temperature, was analysed for their potential use as an insulator in organic electronic devices. Owing to the good leakage current density property shown by AdUr4 dielectric material it was further employed as a gate dielectric in regioregular poly(3-hexylthiophene), (P3HT) based OTFT. This OTFT device which was fabricated on a flexible PI plastic substrate has shown a good on/off current ratio (e.g., 2.18 x 10(4)) and high mobility (e.g., 0.15 cm(2) V-1 s(-1)). The semiconductor-dielectric interface study, has revealed that the AdUr(4) gate dielectric layer has guided the P3HT molecular chain domains to undergo edge-on orientation, which is the charge transport direction in OTFTs. In this process, the grazing incidence X-ray diffraction (GI-XRD) analysis and AFM study was also employed.
URI: http://dx.doi.org/10.1039/c4ra02077d
http://hdl.handle.net/11536/24965
ISSN: 2046-2069
DOI: 10.1039/c4ra02077d
期刊: RSC ADVANCES
Volume: 4
Issue: 56
起始頁: 29383
結束頁: 29392
顯示於類別:期刊論文


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