Imperial College London
Alternate

Professor Jason Riley

Faculty of Engineering, Department of Materials

Vice-Dean (Education) for the Faculty of Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6751jason.riley

 
 
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Location

 

B3.37Bessemer BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Jiang:2020:10.1063/5.0013060,
author = {Jiang, Q and xiangyu, X and Riley, DJ and Xie, F},
doi = {10.1063/5.0013060},
journal = {Journal of Chemical Physics},
pages = {011102--1--011102--6},
title = {Harvesting the lost photon by plasmonic enhanced hematite-upconversion nanocomposite for water splitting},
url = {http://dx.doi.org/10.1063/5.0013060},
volume = {153},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Converting solar energy to chemical energy in the form of hydrogen via water splitting is one of the promising strategies to solve the global energy crisis. Hematite, a traditional semiconducting oxide photoelectrode, can only absorb UV and visible parts of the solar spectrum, losing 40% infrared energy. In this paper, we report a novel plasmonic enhanced water splitting photoanode based on hematite-lanthanide upconversion nanocomposites to harvest lost photons below the bandgap of hematite. NaYF4:Er, Yb upconversion nanoparticles can upconvert photons from 980 nm to 510 nm–570 nm within the bandgap of hematite. More importantly, a gold nanodisk array with a plasmonic peak centered ∼1000 nm can further boost the photocurrent by 93-fold. It is demonstrated that the excitation process of lanthanide upconversion nanoparticles can be significantly enhanced by plasmonic nanostructures and can thus improve the water oxidation activity via plasmonic enhanced upconversion and hot electron injection, respectively. This new promising strategy will pave the way for plasmonic enhanced lost photon harvesting for applications in solar energy conversion.
AU  - Jiang,Q
AU  - xiangyu,X
AU  - Riley,DJ
AU  - Xie,F
DO  - 10.1063/5.0013060
EP  - 1
PY  - 2020///
SN  - 0021-9606
SP  - 011102
TI  - Harvesting the lost photon by plasmonic enhanced hematite-upconversion nanocomposite for water splitting
T2  - Journal of Chemical Physics
UR  - http://dx.doi.org/10.1063/5.0013060
UR  - https://aip.scitation.org/doi/10.1063/5.0013060
UR  - http://hdl.handle.net/10044/1/80892
VL  - 153
ER  -
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