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Updated: May 13, 2026

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
Published on: December 5, 2015
p-Channel field-effect transistors based on C60 doped with molybdenum trioxide
Tae Hoon Lee1, Björn Lüssem, Kwanpyo Kim
1Department of Electrical Engineering, Stanford University, Stanford, California 94305, United States.
Abstract:
Fullerene (C60) is a well-known n-channel organic semiconductor. We demonstrate that p-channel C60 field-effect transistors are possible by doping with molybdenum trioxide (MoO3). The device performance of the p-channel C60 field-effect transistors, such as mobility, threshold voltage, and on/off ratio is varied in a controlled manner by changing doping concentration. This work demonstrates the utility of charge transfer doping to obtain both n- and p-channel field-effect transistors with a single organic semiconductor.
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