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Journal of Nanophotonics • Open Access

Phonon-assisted near-field activation of electron transfer
Author(s): Takashi Yatsui; Kazaunori Iijima; Tsubasa Imoto; Kokoro Kitamura; Tadashi Kawazoe

Paper Abstract

An optical near field should promote phonon-assisted multiple excitation in nanoscale structures. With the phonon-assisted process, greater catalytic activity is expected without heating. To confirm this effect, photo-induced current generation using platinum black electrodes in ferricyanide solution (an absorption band-edge wavelength of 470 nm) under visible light irradiation continuous wave [(CW), λ=532  nm ] was observed. Higher order dependence of the generated current density on the incident light power was observed, indicating two-step activation of electron transfer, which originated from the phonon-assisted near-field effect on the nanostructured surface of the electrode.

Paper Details

Date Published: 25 September 2013
PDF: 8 pages
J. Nanophoton. 7(1) 073796 doi: 10.1117/1.JNP.7.073796
Published in: Journal of Nanophotonics Volume 7, Issue 1
Show Author Affiliations
Takashi Yatsui, The Univ. of Tokyo (Japan)
Kazaunori Iijima, The Univ. of Tokyo (Japan)
Tsubasa Imoto, The Univ. of Tokyo (Japan)
Kokoro Kitamura, Shimane Univ. (Japan)
Tadashi Kawazoe, The Univ. of Tokyo (Japan)


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