Enhanced charge carrier injection in heterojunction organic field-effect transistor by inserting an MoO3 buffer layer |
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| Authors: | Yu Xin-Ge Yu Jun-Sheng Huang Wei and Zeng Hong-Juan |
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| Affiliation: | State Key Laboratory of Electronic Thin Films and Integrated Devices,School of Optoelectronic Information,University of Electronic Science and Technology of China,Chengdu 610054,China |
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| Abstract: | A top-contact organic field-effect transistor(OFET) is fabricated by adopting a pentacene/1,1’-bis(di-4tolylaminophenyl) cyclohexane(TAPC) heterojunction structure and inserting an MoO3 buffer layer between the TAPC organic semiconductor layer and the source/drain electrode.The performances of the heterojunction OFET,including output current,field-effect mobility,and threshed voltage,are all significantly improved by introducing the MoO3 thin buffer layer.The performance improvement of the modified heterojunction OFET is attributed to a better contact formed at the Au/TAPC interface due to the MoO3 thin buffer layer,thereby leading to a remarkable reduction of the contact resistance at the metal/organic interface. |
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| Keywords: | organic field-effect transistor （OFET） MoOz buffer layer heterojunction structure con-tact resistance |
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