This organic transistor is robust under high temperature medical sterilization processes. The high thermal stability of the gate layer was confirmed by a cooperative structural analysis using a synchrotron radiation beam at Brookhaven National Laboratory’s (BNL) Synchrotron Light Source (NSLS).The study is reported in BNL News and published online in Nature Communications on 6th March 2012*. This research is carried out as an ERATO Project of JST.
Manufacturing of a flexible transistor on a bio- compatible polymeric film is not too difficult. For practical implementation, however, high temperature stability and low operating voltages are challenging problems with the best match of its softness and bio-compatibility.
The international research team has succeeded in manufacturing an organic transistor on a polymeric film that has a high thermal stability up to 150°C or higher and the low driving voltage of 2 V with high mobility of 1.2 cm2V−1s−1 at the same time. The new type organic transistor can be sterilized in a standard sterilization process (150°C heat treatment).
The key technology to realize the heat resistant organic transistor with low driving voltage is the development of a new insulating film comprising an ultra-thin (--2 nm) and densely packed layer named self-assembled monolayer (SAM).
Research team seems to expect such applications as long implantable devices and some medical devices like a smart catheter, and thin film medical sensors.
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