Organic field-effect transistor

OFET-based flexible display
Organic CMOS logic circuit. Total thickness is less than 3 μm. Scale bar: 25 mm

An organic field-effect transistor (OFET) is a field-effect transistor using an organic semiconductor in its channel. OFETs can be prepared either by vacuum evaporation of small molecules, by solution-casting of polymers or small molecules, or by mechanical transfer of a peeled single-crystalline organic layer onto a substrate. These devices have been developed to realize low-cost, large-area electronic products and biodegradable electronics. OFETs have been fabricated with various device geometries. The most commonly used device geometry is bottom gate with top drain and source electrodes, because this geometry is similar to the thin-film silicon transistor (TFT) using thermally grown SiO2 as gate dielectric. Organic polymers, such as poly(methyl-methacrylate) (PMMA), can also be used as dielectric.[1] One of the benefits of OFETs, especially compared with inorganic TFTs, is their unprecedented physical flexibility,[2] which leads to biocompatible applications, for instance in the future health care industry of personalized biomedicines and bioelectronics.[3]

In May 2007, Sony reported the first full-color, video-rate, flexible, all plastic display,[4][5] in which both the thin-film transistors and the light-emitting pixels were made of organic materials.

  1. ^ Salleo, A; Chabinyc, M.L.; Yang, M.S.; Street, RA (2002). "Polymer thin-film transistors with chemically modified dielectric interfaces". Applied Physics Letters. 81 (23): 4383–4385. Bibcode:2002ApPhL..81.4383S. doi:10.1063/1.1527691.
  2. ^ Kaltenbrunner, Martin (2013). "An ultra-lightweight design for imperceptible plastic electronics". Nature. 499 (7459): 458–463. Bibcode:2013Natur.499..458K. doi:10.1038/nature12314. PMID 23887430. S2CID 2657929.
  3. ^ Nawrocki, Robert (2016). "300-nm Imperceptible, Ultraflexible, and Biocompatible e-Skin Fit with Tactile Sensors and Organic Transistors". Advanced Electronic Materials. 2 (4): 1500452. doi:10.1002/aelm.201500452. S2CID 138355533.
  4. ^ プラスチックフィルム上の有機TFT駆動有機ELディスプレイで世界初のフルカラー表示を実現. sony.co.jp (in Japanese)
  5. ^ Flexible, full-color OLED display. pinktentacle.com (2007-06-24).