This title appears in the Scientific Report :
2020
Please use the identifier:
http://hdl.handle.net/2128/26046 in citations.
Please use the identifier: http://dx.doi.org/10.1021/acs.jpcc.9b11716 in citations.
Transport through Redox-Active Ru-Terpyridine Complexes Integrated in Single Nanoparticle Devices
Transport through Redox-Active Ru-Terpyridine Complexes Integrated in Single Nanoparticle Devices
Transition metal complexes are electrofunctional molecules due to their high conductivity and their intrinsic switching ability involving a metal-to-ligand charge transfer. Here, a method is presented to contact reliably a few to single redox-active Ru-terpyridine complexes in a CMOS compatible nano...
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Personal Name(s): | Mennicken, Max |
---|---|
Peter, Sophia K. / Kaulen, Corinna / Simon, Ulrich / Karthäuser, Silvia (Corresponding author) | |
Contributing Institute: |
Elektronische Materialien; PGI-7 JARA-FIT; JARA-FIT |
Published in: |
The journal of physical chemistry |
Imprint: |
Washington, DC
Soc.
2020
|
DOI: |
10.1021/acs.jpcc.9b11716 |
Document Type: |
Journal Article |
Research Program: |
Controlling Collective States |
Link: |
Published on 2020-02-05. Available in OpenAccess from 2021-02-05. Published on 2020-02-05. Available in OpenAccess from 2021-02-05. Restricted Published on 2020-02-05. Available in OpenAccess from 2021-02-05. Published on 2020-02-05. Available in OpenAccess from 2021-02-05. Restricted |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1021/acs.jpcc.9b11716 in citations.
Transition metal complexes are electrofunctional molecules due to their high conductivity and their intrinsic switching ability involving a metal-to-ligand charge transfer. Here, a method is presented to contact reliably a few to single redox-active Ru-terpyridine complexes in a CMOS compatible nanodevice and preserve their electrical functionality. Using hybrid materials from 14 nm gold nanoparticles (AuNP) and bis-{4′-[4-(mercaptophenyl)-2,2′:6′,2″-terpyridine]}-ruthenium(II) complexes a device size of 302 nm2 inclusive nanoelectrodes is achieved. Moreover, this method bears the opportunity for further downscaling. The Ru-complex AuNP devices show symmetric and asymmetric current versus voltage curves with a hysteretic characteristic in two well separated conductance ranges. By theoretical approximations based on the single-channel Landauer model, the charge transport through the formed double-barrier tunnel junction is thoroughly analyzed and its sensibility to the molecule/metal contact is revealed. It can be verified that tunneling transport through the HOMO is the main transport mechanism while decoherent hopping transport is present to a minor extent. |