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15 October 2012 High performance organic field-effect transistor with oxide/metal bilayer electrodes
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Pentacene organic field-effect transistors (OFETs) were fabricated by inserting a thin metallic oxide material MoO3 between pentacene and gold (Au) electrodes as an interlayer. Comparing with the corresponding single layer OFETs without any interlayer, theses OFETs with a thin MoO3 interlayer showed an obvious enhancement of hole mobility and slightly decrease of threshold voltage. The improvement of performance was investigated by interfacial energy level of the organic/metal interface, which showed that the MoO3 interlayer could significantly reduce the injection barrier between Au and pentacene. Moreover, the reduction of the injection barrier leads to a decrease of contact resistance at organic/metal interface, which improve the performance of the devices.
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Xinge Yu, Junsheng Yu, Wei Huang, Shijiao Han, and Yadong Jiang "High performance organic field-effect transistor with oxide/metal bilayer electrodes", Proc. SPIE 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy, 84190E (15 October 2012);

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