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Updated: Apr 3, 2026

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
Published on: November 7, 2016
Grain Size and Interface Dependence of Bias Stress Stability of n-Type Organic Field Effect Transistors
Rizwan Ahmed1,2, Clemens Simbrunner1,3, M A Baig2
1Institute of Semiconductor and Solid State Physics, Johannes Kepler University , A-4040 Linz, Austria.
Abstract:
The effect of grain size and interface dependence of bias stress stability of C60-based n-type organic field effect transistors (OFETs) has been studied. It has been realized that, with increasing grain size of C60, the bias stress induced threshold voltage shift can be controlled and this effect is mainly attributed to the mechanism of charge trapping at grain boundaries. It is further studied that the growth of C60 on the surface of parylene at elevated substrate temperature leads to the creation of radicals at the interface between the active layer and the gate dielectric. These radicals help to improve the bias stress stability of C60-based n-type OFETs. For achieving the bias stress stability, we have presented a procedure of creation of radicals at the interface between C60 and parylene in single gate OFETs instead of dual gate OFETs.
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