Impact of device design on the electronic and optoelectronic properties of integrated Ru-terpyridine complexes

Beilstein Journal of Nanotechnology

article

Max Mennicken¹  Sophia Katharina Peter³  Corinna Kaulen³  Ulrich Simon³  Silvia Karthäuser¹ 

[1] Peter Grünberg Institut;RWTH Aachen University;Institute of Inorganic Chemistry and JARA-FIT, RWTH Aachen University;Faculty of Medical Engineering and Applied Mathematics, FH Aachen, University of Applied Science

关键词: conductance switching;    gold nanoparticles;    nanoelectronic devices;    optical addressing;    Ru-terpyridine wires;   

DOI  :  10.3762/bjnano.13.16

学科分类：环境监测和分析

来源: Beilstein - Institut zur Foerderung der Chemischen Wissenschaften

【 摘 要 】

The performance of nanoelectronic and molecular electronic devices relies strongly on the employed functional units and their addressability, which is often a matter of appropriate interfaces and device design. Here, we compare two promising designs to build solid-state electronic devices utilizing the same functional unit. Optically addressable Ru-terpyridine complexes were incorporated in supramolecular wires or employed as ligands of gold nanoparticles and contacted by nanoelectrodes. The resulting small-area nanodevices were thoroughly electrically characterized as a function of temperature and light exposure. Differences in the resulting device conductance could be attributed to the device design and the respective transport mechanism, that is, thermally activated hopping conduction in the case of Ru-terpyridine wire devices or sequential tunneling in nanoparticle-based devices. Furthermore, the conductance switching of nanoparticle-based devices upon 530 nm irradiation was attributed to plasmon-induced metal-to-ligand charge transfer in the Ru-terpyridine complexes used as switching ligands. Finally, our results reveal a superior device performance of nanoparticle-based devices compared to molecular wire devices based on Ru-terpyridine complexes as functional units.

【 授权许可】

CC BY