Integrated molecular diode as 10 MHz half-wave rectifier based on an organic nanostructure heterojunction

Tianming Li, Vineeth Kumar Bandari, Martin Hantusch, Jianhui Xin, Robert Kuhrt, Rachappa Ravishankar, Longqian Xu, Jidong Zhang, Martin Knupfer, Feng Zhu (), Donghang Yan and Oliver G. Schmidt
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Tianming Li: Chemnitz University of Technology
Vineeth Kumar Bandari: Chemnitz University of Technology
Martin Hantusch: Leibniz IFW Dresden
Jianhui Xin: Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
Robert Kuhrt: Leibniz IFW Dresden
Rachappa Ravishankar: Chemnitz University of Technology
Longqian Xu: Chemnitz University of Technology
Jidong Zhang: Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
Martin Knupfer: Leibniz IFW Dresden
Feng Zhu: Chemnitz University of Technology
Donghang Yan: Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
Oliver G. Schmidt: Chemnitz University of Technology

Nature Communications, 2020, vol. 11, issue 1, 1-10

Abstract: Abstract Considerable efforts have been made to realize nanoscale diodes based on single molecules or molecular ensembles for implementing the concept of molecular electronics. However, so far, functional molecular diodes have only been demonstrated in the very low alternating current frequency regime, which is partially due to their extremely low conductance and the poor degree of device integration. Here, we report about fully integrated rectifiers with microtubular soft-contacts, which are based on a molecularly thin organic heterojunction and are able to convert alternating current with a frequency of up to 10 MHz. The unidirectional current behavior of our devices originates mainly from the intrinsically different surfaces of the bottom planar and top microtubular Au electrodes while the excellent high frequency response benefits from the charge accumulation in the phthalocyanine molecular heterojunction, which not only improves the charge injection but also increases the carrier density.

Date: 2020
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DOI: 10.1038/s41467-020-17352-9

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