Paper 13111-11
Paper 13111-11
Effect of adhesive layer on electron injection from plasmonic nanoparticles into titanium oxide under strong coupling condition (Invited Paper)
18 August 2024 • 3:45 PM - 4:10 PM PDT | Conv. Ctr. Room 4
Abstract
We fabricated titanium oxide electrodes with nanocavity functionality and supported gold nanoparticles on them to form a strong coupling between localized surface plasmon resonance (LSPR) mode of the gold nanoparticles and the nanocavity mode. This resulted in successful absorption of a broad range of visible wavelengths. When using the electrodes with modal strong coupling, we observed an increased internal quantum yield of photocurrent generation using water as an electron source compared to plasmonic electrodes without nanocavity. Furthermore, we elucidated that the mechanism behind this enhancement involves quantum coherent interactions of multiple LSPRs via the nanocavity. Here, we report the use of metallic titanium as an adhesion layer between the nanocavity and gold nanoparticles, leading to an increase in electron injection into titanium oxide and provide further insights into the underlying mechanism.
Presenter
Hiroaki Misawa
Okayama Univ. (Japan), Hokkaido Univ. (Japan), National Yang Ming Chiao Tung Univ. (Taiwan)
Hiroaki Misawa has become a special appointment professor at Research Institute for interdisciplinary Science, Okayama University since January 2024. He received his Ph.D. in Chemistry from the University of Tsukuba in 1984. After an assistant professorship at the University of Tsukuba, he joined the Microphotoconversion project (ERATO) of JST. He became an associate professor at the University of Tokushima in 1993 and was promoted to full professor in 1995. He moved to Research Institute for Electronic Science, Hokkaido University as full professor in 2003. He is currently an extraordinary professor there. Since 2015, he has held an additional post as a chair professor at National Chiao Tung University, Taiwan*. His research interest is plasmonic chemistry especially in the plasmon-induced artificial photosynthesis.
*National Chiao Tung University and National Yang Ming University merged into the National Yang Ming Chiao Tung University on February 1, 2021.