We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Photo-Stable Organic Thin-Film Transistor Utilizing a New Indolocarbazole Derivative for Image Pixel and Logic Applications.
- Authors
Park, Ji Hoon; Lee, Hee Sung; Park, Soohyung; Min, Sung‐Wook; Yi, Yeonjin; Cho, Cheon‐Gyu; Han, Jiwon; Kim, Tae Woong; Im, Seongil
- Abstract
Small molecule pentacene layer has been a representative among many organic thin-film transistor (OTFT) channels with decent p-type mobilities, but it is certainly light-sensitive due to its relatively small highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gap (1.85 eV). Although a few other small molecule-based layers have been reported later, their photo-stabilities or related device applications have hardly been addressed. Here, a new photostable organic layer is reported, heptazole (C26H16N2), which has almost the same HOMO level as that of pentacene but with a higher HOMO-LUMO gap (≈2.95 eV). This heptazole OTFT displays a decent mobility comparable to that of conventional amorphous Si TFTs, showing good photostability unlike pentacene OTFTs. An image pixel driving the photostable heptazole OTFT connected to a pentacene/Al Schottky photodiode is demonstrated. This heptazole OTFT also conveniently forms a logic inverter coupled with a pentacene OTFT, sharing Au for source/drain.
- Subjects
THIN film transistors; PIXELS; DIGITAL images; ORGANIC thin films; PENTACENE; SCHOTTKY barrier diodes
- Publication
Advanced Functional Materials, 2014, Vol 24, Issue 8, p1109
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.201301783