Ji Hoon Park, Hee Sung Lee, Soohyung Park, Sung-Wook Min, Yeonjin Yi, Cheon-Gyu Cho, Jiwon Han, Tae Woong Kim and Seongil Im Photo-Stable Organic Thin-Film Transistor Utilizing a New Indolocarbazole Derivative for Image Pixel and Logic Applications Advanced Functional Materials
A new indolocabazole derivative (heptazole) possessing a HOMO-LUMO gap of ≈2.95 eV is synthesized and shows good photo-stability unlike old pentacene. An image pixel driving our photostable heptazole OTFT connected to a pentacene/Al Schottky photodiode is demonstrated. The heptazole OTFT also conveniently forms a logic inverter coupled with a pentacene OTFT, sharing Au for source/drain.
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