22 September 2005 Charge transportation in organic heterojunction and its application for double conducting channel field-effect transistors
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Abstract
Behaviors of charge transportation in organic heterojunction consisted of p-type CuPc and n-type F16CuPc have been studied. Conductivity parallel to heterojunction interface is higher than that of each single layer is observed. It has been confirmed that the higher conductivity is originate from accumulation of positive and negative mobile charges. Based on this phenomenon, a novel heterojunction organic field-effect transistor (OFET) having two conducting channels has been demonstrated. The heterojunction OFETs, with either p-type layer or n-type layer connected to the insulator, can operate in mode of normally-on (depletion-accumulation). In addition, ambipolar electrical properties with mobility of 0.04cm2/Vs and balanced charge transportation, and CMOS inverter comprising unique ambipolar transitor have been optimised based on the heterojunction OFET.
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Donghang Yan, Donghang Yan, } "Charge transportation in organic heterojunction and its application for double conducting channel field-effect transistors", Proc. SPIE 5940, Organic Field-Effect Transistors IV, 59400P (22 September 2005); doi: 10.1117/12.619164; https://doi.org/10.1117/12.619164
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