TY - JOUR
T1 - Plasmon-enhanced light-driven water oxidation by a dye-sensitized photoanode
AU - Wang, Degao
AU - Sherman, Benjamin D.
AU - Farnum, Byron H.
AU - Sheridan, Matthew V.
AU - Marquard, Seth L.
AU - Eberhart, Michael S.
AU - Dares, Christopher J.
AU - Meyer, Thomas J.
N1 - Publisher Copyright:
© 2017, National Academy of Sciences. All rights reserved.
PY - 2017/9/12
Y1 - 2017/9/12
N2 - Dye-sensitized photoelectrosynthesis cells (DSPECs) provide a flexible approach for solar water splitting based on the integration of molecular light absorption and catalysis on oxide electrodes. Recent advances in this area, including the use of core/shell oxide interfacial structures and surface stabilization by atomic layer deposition, have led to improved charge-separation lifetimes and the ability to obtain substantially improved photocurrent densities. Here, we investigate the introduction of Ag nanoparticles into the core/shell structure and report that they greatly enhance light-driven water oxidation at a DSPEC photoanode. Under 1-sun illumination, Ag nanoparticle electrodes achieved high photocurrent densities, surpassing 2 mA cm−2 with an incident photon-to-current efficiency of 31.8% under 450-nm illumination.
AB - Dye-sensitized photoelectrosynthesis cells (DSPECs) provide a flexible approach for solar water splitting based on the integration of molecular light absorption and catalysis on oxide electrodes. Recent advances in this area, including the use of core/shell oxide interfacial structures and surface stabilization by atomic layer deposition, have led to improved charge-separation lifetimes and the ability to obtain substantially improved photocurrent densities. Here, we investigate the introduction of Ag nanoparticles into the core/shell structure and report that they greatly enhance light-driven water oxidation at a DSPEC photoanode. Under 1-sun illumination, Ag nanoparticle electrodes achieved high photocurrent densities, surpassing 2 mA cm−2 with an incident photon-to-current efficiency of 31.8% under 450-nm illumination.
KW - Atomic layer deposition
KW - Core/shell
KW - DSPEC
KW - Plasmonic
KW - Water oxidation
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U2 - 10.1073/pnas.1708336114
DO - 10.1073/pnas.1708336114
M3 - Article
C2 - 28847965
AN - SCOPUS:85029455981
SN - 0027-8424
VL - 114
SP - 9809
EP - 9813
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 37
ER -