Extraordinary enhancement of porphyrin photocurrent utilizing plasmonic silver arrays

Kosuke Sugawa; Koji Uchida; Naoto Takeshima; Shota Jin; Natsumi Tsunenari; Hideyuki Takeda; Yuki Kida; Tsuyoshi Akiyama; Joe Otsuki; Kouichi Takase; Sunao Yamada

doi:10.1039/c6nr03158g

Extraordinary enhancement of porphyrin photocurrent utilizing plasmonic silver arrays

Nanoscale. 2016 Aug 25;8(34):15467-72. doi: 10.1039/c6nr03158g.

Authors

Affiliations

¹ Department of Materials and Applied Chemistry, College of Science Technology, Nihon University, Chiyoda, Tokyo 101-8308, Japan.
² Department of Materials Science, School of Engineering, The University of Shiga Prefecture, Hikone, Shiga 522-8533, Japan.
³ Department of Physics, College of Science and Technology, Nihon University, Chiyoda, Tokyo 101-0062, Japan.
⁴ Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Moto-oka, Nishiku, Fukuoka 819-0395, Japan. sugawa.kosuke@nihon-u.ac.jp.

PMID: 27420651
DOI: 10.1039/c6nr03158g

Abstract

We demonstrate up to ∼630-fold enhancement of the photocurrent from a porphyrin monolayer on a plasmonic Ag-array electrode showing plasmon absorption in the Q-band region relative to that on a planar Ag electrode. The photocurrent obtained by the Q-band excitation in the plasmonic electrodes even exceeded that obtained by the Soret-band excitation in a normal, nonplasmonic electrode.