Micro-scale twistable organic field effect transistors and complementary inverters fabricated by orthogonal photolithography on flexible polyimide substrate

作者：Jang Jingon; Song Younggul; Yoo Daekyoung; Kim Tae Young; Jung Seok Heon; Hong Seunghun; Lee Jin Kyun^*; Lee Takhee

来源：Organic Electronics, 2014, 15(11): 2822-2829.

DOI：10.1016/j.orgel.2014.08.025

• Organic field effect transistor
• Flexible electronics
• Twistable device
• Complementary inverter

We fabricated micro-scale organic field effect transistors (OFETs) and complementary inverters on a twistable polyimide (PI) substrate by applying orthogonal photolithography. By applying a highly fluorinated photoresist and development solvent, it becomes possible to create organic electronic devices with a micro-scale channel length without damaging the underlying polymer films. The 3 mu m-channel twistable pentacene OFET devices and complementary inverters created using p-type pentacene and n-type copper hexadecafluorophthalocyanine exhibited stable electrical characteristics from flat to twist configurations (angle of up to similar to 50 degrees). The realization of twistable micro-scale OFETs and inverter devices on a PI substrate may enable the production of functioning organic devices in practical, flexible configurations.

• 出版日期2014-11