Abstract

Localized surface plasmon resonance (LSPR)-induced hot-carrier transfer is a key mechanism for achieving artificial photosynthesis using the whole solar spectrum, even including the infrared (IR) region. In contrast to the explosive development of photocatalysts based on the plasmon-induced hot electron transfer, the hole transfer system is still quite immature regardless of its importance, because the mechanism of plasmon-induced hole transfer has remained unclear. Herein, we elucidate LSPR-induced hot hole transfer in CdS/CuS heterostructured nanocrystals (HNCs) using time-resolved IR (TR-IR) spectroscopy. TR-IR spectroscopy enables the direct observation of carrier in a LSPR-excited CdS/CuS HNC. The spectroscopic results provide insight into the novel hole transfer mechanism, named plasmon-induced transit carrier transfer (PITCT), with high quantum yields (19%) and long-lived charge separations (9.2 μs). As an ultrafast charge recombination is a major drawback of all plasmonic energy conversion systems, we anticipate that PITCT will break the limit of conventional plasmon-induced energy conversion.

Details

Title
Near infrared light induced plasmonic hot hole transfer at a nano-heterointerface
Author
Lian, Zichao 1   VIAFID ORCID Logo  ; Sakamoto, Masanori 2 ; Matsunaga, Hironori 3 ; Junie Jhon M Vequizo 3 ; Yamakata, Akira 3   VIAFID ORCID Logo  ; Haruta, Mitsutaka 2   VIAFID ORCID Logo  ; Kurata, Hiroki 2 ; Ota, Wataru 4 ; Sato, Tohru 5 ; Teranishi, Toshiharu 2 

1  Department of Chemistry, Graduate School of Science, Kyoto University, Gokasho, Uji, Kyoto, Japan 
2  Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, Japan 
3  Graduate School of Engineering, Toyota Technological Institute, Tempaku, Nagoya, Japan 
4  Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan 
5  Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan; Fukui Institute for Fundamental Chemistry, Kyoto University, Sakyo-ku, Kyoto, Japan; Unit of Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Nishikyo-ku, Kyoto, Japan 
Pages
1-7
Publication year
2018
Publication date
Jun 2018
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-018-04630-w
ProQuest document ID
2054862549
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.