| AVS 61st International Symposium & Exhibition | |
| Nanometer-scale Science and Technology | Monday Sessions |
| Session NS+EN-MoA |
| Session: | Nanophotonics and Plasmonics |
| Presenter: | Jiechang Hou, University of Pennsylvania |
| Authors: | J. Hou, University of Pennsylvania D.A. Bonnell, University of Pennsylvania |
| Correspondent: | Click to Email |
Nano-sized metal-oxide interfaces possess unique physical properties and offers new access to novel functionalities. We have shown that at the nano-scale the electronic properties of Au/ SrTiO3 interfaces are size and atomic structure dependent [1]. This size dependence of interface properties has consequences to related behavior, such as resistive switching [2]. Earlier we have shown that plasmon induced hot electrons can be extracted from Au nanoparticles into molecular devices [3]. Here we use Au nano-antennas/SrTiO3 interfaces as a facile model system to study this phenomenon. The study combines nanofabrication, optical spectroscopies, field simulation and advanced scanning probe microscopy. The dependences of photocurrent on power density and temperature are quantified, and the mechanism of photocurrent enhancement is discussed. We believe that this study can improve the understanding of the mechanism of plasmon-induce d current enhancement and facilitate the modern device design.
References:
[1] J. Hou, S. S. Nonnenmann, W. Qin, D. A. Bonnell, Appl. Phys. Lett. 103, 252106, 2013.
[2] J. Hou, S. S. Nonnenmann, W. Qin, D. A. Bonnell, Adv. Funct. Mater. (2014). doi: 10.1002/adfm.201304121.
[3] D. Conklin, S. Nanayakkara, T. Park, M. F. Lagadec, J. T. Stecher , X. Chen, M. J. Therien, D. A. Bonnell, ACS Nano7, 4479 (2013).