Transistor manufacture generally uses glass as the base material, which is conducive to maintaining stability in a variety of environments, thereby ensuring the current required by the electric equipment. According to the report of the American Physicists Organization Network on January 27th, researchers from the Georgia Institute of Technology in the United States recently developed a new type of dual-layer interface transistor, which is extremely stable and capable of operating in a controlled environment at conditions below 150 degrees Celsius. Produced in large quantities on plastic substrates, it can be used for flexible, flexible plastic electronics. Research papers were published on the recent "Advanced Materials" magazine website.

Since the performance of the transistor depends not only on the semiconductor itself, but also on the interface between the semiconductor and the gate of the dielectric, the research team has improved the dielectric gate of an existing semiconductor, the top gate organic field-effect transistor and the bimolecular Layered gate insulators are bonded together, and the improved transistors exhibit extremely stable performance and excellent conductivity during testing.

Bernard Caplin, a professor of electrical and computer engineering at the Institute of Organic Photonics and Electronics at the Georgia Institute of Technology, said that in the past transistors used a single dielectric material, and the improved transistor has a double-layer dielectric barrier. Molecular materials.

The bilayer of the dielectric grid is composed of a fluorinated polymer called CYTOP, and a high dielectric constant metal oxide layer is produced by atomic layer deposition. The researchers explained that in organic semiconductors, the dielectric constant of CYTOP is very low and it is necessary to increase the driving voltage. While high dielectric constant metal oxides require lower voltages, many of the disadvantages of using them as an interface make the transistor performance unstable. Both substances have advantages and disadvantages when used alone, but the combination of the two substances as a bilayer, the disadvantages of both will be overcome due to complementarity.

The researchers conducted a variety of tests on the bilayer of the battery, including turning on the transistor 20,000 times, applying continuous bio-pressure to run at the highest current, and even placing the transistor in the plasma chamber for 5 minutes, and found that it had no mobility. reduce. Until they put the transistor in acetone for an hour, the fluidity dropped a little but the transistor was still running.

Researchers said that currently only transistors have been tested on glass substrates. They will then examine the nature of the transistors on bendable flexible plastics and further experiment with inkjet printing technology to create bilayer transistors. The new transistor can be used in any electronic device that requires a stable current and a pliable surface, such as high-grade straps, RFID tags, plastic solar cells, and smart card emitters.

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