Mitsubishi Chemical has announced that it has developed a solution-based Organic Semiconductor Material, which is expected to open the way to the development of a new class of larger, cheaper flat-panel displays like OLED televisions. Only Pentacene has been reported as a practical small-molecular material having high mobility, but it has to be processed by the high-cost vacuum deposition method.
Polythiophene has been reported as a soluble polymer material, but it can be applied only to a limited area, like electrical papers, because of its low mobility. The newly developed MCRC organic semiconductor material is solution-processible small-molecular material having the high mobility of 1.4cm2/Vs because of its high-crystalline characteristics, according to the company.
This mobility is one of the world's best - equal to amorphous-silicon, the most popular inorganic transistor material. Also, this unique material has potential to be patterned by the laser, different from traditional photolithographic method, which enables high-resolution patterning. MCRC successfully drove an organic light-emitting device (OLED) with the transistors fabricated with its newly developed material. This material has been jointly developed with Professor Noboru Ono of Ehime University, Japan, and the transistor device has been jointly fabricated with Associate Professor Reiji Hattori of Kyushu University, Japan.
