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

作者：Park Ji Hoon; Lim Hyunjin; Cheong Hyeonsik; Lee Kyu Min; Sohn Hyun Chul; Lee Gyubaek; Im Seongil^*

来源：Organic Electronics, 2012, 13(7): 1250-1254.

DOI：10.1016/j.orgel.2012.04.001

• Anisotropic
• Inverter
• Solution process
• Polymer blend
• Organic thin-film transistor

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.

• 出版日期2012-7