Anisotropic mobility of small molecule-polymer blend channel in organic transistor: Characterization of channel materials and orientation

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• 作者：Ji Hoon Park^a ; Hyunjin Lim^b ; ^c ; Hyeonsik Cheong^b ; Kyu Min Lee^d ; Hyun Chul Sohn^d ; Gyubaek Lee^a ; Seongil Im^a ; ^{semicon@yonsei.ac.kr}
• 关键词：Anisotropic ; Inverter ; Solution process ; Polymer blend ; Organic thin-film transistor
• 刊名：Organic Electronics
• 出版年：2012
• 期刊代码：137_15661199
• 类别：et
• 出版时间：July, 2012
• 卷：13
• 期：7
• 页码：1250-1254
• 文件大小：932 K

摘要

We report on the anisotropic properties of solution-processed thin-film transistors (TFTs) fabricated by the vertical flowing of the viscous 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) and isotactic (i-) poly-(methyl methacrylate) (PMMA) blend. During film formation processes, lateral crystalline growth of TIPS-pentacene and TIPS-pentacene/i-PMMA phase-separation were observed. Such anisotropic crystallization of TIPS-pentacene channel caused anisotropic mobility with respect to the channel orientation, so that it could be used for composing of a logic inverter where two TFTs with different channel orientations were serially connected.