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New technologies were jointly developed by researchers from the Japan Industrial Technology Research Institute and other institutions. It is said that this technology can make thin-film field-effect transistors (TFTs) required for large-area electronic devices such as flat panel displays more than a hundred times more efficient than products made using conventional methods.
The Industrial Technology Research Institute issued a press release on the 14th, saying that for organic semiconductors, the higher the crystallinity of low molecular materials, the better the performance of semiconductor devices made, but due to convection and irregular crystallization inside the material droplets, It is very difficult to control the precipitation of semiconductors in the material solution. Therefore, it is difficult to form a uniform semiconductor coating by conventional techniques, and the resulting organic semiconductor single crystal thin film has poor performance, thereby affecting important semiconductor components manufactured using it - thin film field effect transistors. Performance.
In this study, the researchers used an ink containing an organic semiconductor, C8-BTBT, and an ink that promotes the crystallization of organic semiconductors, which were sprayed one after another to solve the problem of uneven semiconductor coating. The organic semiconductor single crystal thin film made by the new technology not only has a very uniform semiconductor coating but also has a thickness of only 30 nm.
The new technology does not require large-scale equipment. In addition, the production process can be carried out at normal temperature and pressure, so it is no longer necessary to use high-temperature-resistant glass as the substrate, and plastic can be used as the substrate. All of these help to reduce production costs and energy consumption in the production process.
A Japanese research team reported on the online version of Nature magazine in the United Kingdom on the 14th that they have developed a new technology for making single crystal thin films of organic semiconductors.