TY - JOUR
T1 - Near infrared light induced plasmonic hot hole transfer at a nano-heterointerface
AU - Lian, Zichao
AU - Sakamoto, Masanori
AU - Matsunaga, Hironori
AU - Vequizo, Junie Jhon M.
AU - Yamakata, Akira
AU - Haruta, Mitsutaka
AU - Kurata, Hiroki
AU - Ota, Wataru
AU - Sato, Tohru
AU - Teranishi, Toshiharu
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Numbers JP16H06520 (Coordination Asymmetry) (T.T.), JP17H05257 (Photosynergetics) (M.S.) and JP17H05491 (Mixed Anion) (A.Y.), and a JSPS Research Fellowship (17J09073) (Z.L.). The authors wish to thank Dr. D. Eguchi for synthesizing the TPA derivative molecules. We also thank T. Nakagawa for the ns-transient absorption measurement.
Publisher Copyright:
© 2018 The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - 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.
AB - 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.
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U2 - 10.1038/s41467-018-04630-w
DO - 10.1038/s41467-018-04630-w
M3 - Article
C2 - 29899329
AN - SCOPUS:85048594859
SN - 2041-1723
VL - 9
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 2314
ER -