TY - JOUR
T1 - Plasmonic p-n Junction for Infrared Light to Chemical Energy Conversion
AU - Lian, Zichao
AU - Sakamoto, Masanori
AU - Vequizo, Junie J.M.
AU - Ranasinghe, C. S.Kumara
AU - Yamakata, Akira
AU - Nagai, Takuro
AU - Kimoto, Koji
AU - Kobayashi, Yoichi
AU - Tamai, Naoto
AU - Teranishi, Toshiharu
N1 - Publisher Copyright:
© 2019 American Chemical Society. All rights reserved.
PY - 2019/2/13
Y1 - 2019/2/13
N2 - Infrared (IR) light represents an untapped energy source accounting for almost half of all solar energy. Thus, there is a need to develop systems to convert IR light to fuel and make full use of this plentiful resource. Herein, we report photocatalytic H2evolution driven by near- to shortwave-IR light (up to 2500 nm) irradiation, based on novel CdS/Cu7S4heterostructured nanocrystals. The apparent quantum yield reached 3.8% at 1100 nm, which exceeds the highest efficiencies achieved by IR light energy conversion systems reported to date. Spectroscopic results revealed that plasmon-induced hot-electron injection at p-n heterojunctions realizes exceptionally long-lived charge separation (>273 μs), which results in efficient IR light to hydrogen conversion. These results pave the way for the exploration of undeveloped low-energy light for solar fuel generation.
AB - Infrared (IR) light represents an untapped energy source accounting for almost half of all solar energy. Thus, there is a need to develop systems to convert IR light to fuel and make full use of this plentiful resource. Herein, we report photocatalytic H2evolution driven by near- to shortwave-IR light (up to 2500 nm) irradiation, based on novel CdS/Cu7S4heterostructured nanocrystals. The apparent quantum yield reached 3.8% at 1100 nm, which exceeds the highest efficiencies achieved by IR light energy conversion systems reported to date. Spectroscopic results revealed that plasmon-induced hot-electron injection at p-n heterojunctions realizes exceptionally long-lived charge separation (>273 μs), which results in efficient IR light to hydrogen conversion. These results pave the way for the exploration of undeveloped low-energy light for solar fuel generation.
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U2 - 10.1021/jacs.8b11544
DO - 10.1021/jacs.8b11544
M3 - Article
C2 - 30563330
AN - SCOPUS:85059781750
SN - 0002-7863
VL - 141
SP - 2446
EP - 2450
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 6
ER -