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Title: Near infrared light induced plasmonic hot hole transfer at a nano-heterointerface
Authors: Lian, Zichao
Sakamoto, Masanori  kyouindb  KAKEN_id  orcid (unconfirmed)
Matsunaga, Hironori
Vequizo, Junie Jhon M.
Yamakata, Akira
Haruta, Mitsutaka  kyouindb  KAKEN_id  orcid (unconfirmed)
Kurata, Hiroki  kyouindb  KAKEN_id  orcid (unconfirmed)
Ota, Wataru
Sato, Tohru
Teranishi, Toshiharu  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: 坂本, 雅典
松永, 大典
山方, 啓
治田, 充貴
倉田, 博基
大田, 航
佐藤, 徹
寺⻄, 利治
Keywords: Energy transfer
Light harvesting
Nanophotonics and plasmonics
Issue Date: 13-Jun-2018
Publisher: Springer Nature
Journal title: Nature Communications
Volume: 9
Thesis number: 2314
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.
Description: 新しいプラズモン誘起キャリア移動機構の発見 --赤外光エネルギーの利用に期待--. 京都大学プレスリリース. 2018-06-27.
Rights: © The Author(s) 2018. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit licenses/by/4.0/.
DOI(Published Version): 10.1038/s41467-018-04630-w
PubMed ID: 29899329
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