Tunneling and Thermally Activated Electron Transfer in Dye-Sensitized SnO2|TiO2 Core|Shell Nanostructures

2020 ◽  
Vol 124 (45) ◽  
pp. 25148-25159
Author(s):  
Rachel E. Bangle ◽  
Michael J. Mortelliti ◽  
Ludovic Troian-Gautier ◽  
Jillian L. Dempsey ◽  
Gerald J. Meyer
Keyword(s):  
Electron Transfer ◽  
Core Shell ◽  
Thermally Activated ◽  
Dye Sensitized ◽  
Shell Nanostructures

Electron transfer kinetics in water splitting dye-sensitized solar cells based on core–shell oxide electrodes

2012 ◽  
Vol 155 ◽  
pp. 165-176 ◽  
Author(s):  
Seung-Hyun Anna Lee ◽  
Yixin Zhao ◽  
Emil A. Hernandez-Pagan ◽  
Landy Blasdel ◽  
W. Justin Youngblood ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Solar Cells ◽  
Water Splitting ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Electron Transfer Kinetics ◽  
Dye Sensitized ◽  
Oxide Electrodes ◽  
Sensitized Solar Cells

UV photocatalytic activity of Au@ZnO core–shell nanostructure with enhanced UV emission

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 65595-65599 ◽  
Author(s):  
Tingting Jiang ◽  
Xueying Qin ◽  
Ye Sun ◽  
Miao Yu
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Photocatalytic Properties ◽  
Core Shell ◽  
Shell Nanostructures ◽  
Uv Emission

Au@ZnO core–shell nanostructures with increased ultraviolet photoluminescence emissions present remarkably enhanced ultraviolet photocatalytic properties, based on bidirectional electron transfer between Au and ZnO.

scholarly journals Dye-sensitized Pt@TiO2 core–shell nanostructures for the efficient photocatalytic generation of hydrogen

2014 ◽  
Vol 5 ◽  
pp. 360-364 ◽  
Author(s):  
Jun Fang ◽  
Lisha Yin ◽  
Shaowen Cao ◽  
Yusen Liao ◽  
Can Xue
Keyword(s):  
Photocatalytic Activity ◽  
High Photocatalytic Activity ◽  
Shell Structures ◽  
Core Shell ◽  
Synergic Effect ◽  
Proton Reduction ◽  
Dye Sensitization ◽  
Dye Sensitized ◽  
Shell Nanostructures ◽  
Photogenerated Electrons

Pt@TiO2 core–shell nanostructures were prepared through a hydrothermal method. The dye-sensitization of these Pt@TiO2 core–shell structures allows for a high photocatalytic activity for the generation of hydrogen from proton reduction under visible-light irradiation. When the dyes and TiO2 were co-excited through the combination of two irradiation beams with different wavelengths, a synergic effect was observed, which led to a greatly enhanced H2 generation yield. This is attributed to the rational spatial distribution of the three components (dye, TiO2, Pt), and the vectored transport of photogenerated electrons from the dye to the Pt particles via the TiO2 particle bridge.

scholarly journals TiO2 Coated ZnO Nanorods by Mist Chemical Vapor Deposition for Application as Photoanodes for Dye-Sensitized Solar Cells

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1339 ◽  
Author(s):  
Qiang Zhang ◽  
Chaoyang Li
Keyword(s):  
Titanium Dioxide ◽  
Vapor Deposition ◽  
Dye Sensitized Solar Cells ◽  
Chemical Vapor ◽  
Shell Structures ◽  
Core Shell ◽  
Dye Sensitized ◽  
Shell Nanostructures ◽  
Coating Time ◽  
Sensitized Solar Cells

In this study, a mist chemical vapor deposition method was applied to create a coating of titanium dioxide particles in order to fabricate ZnO/TiO2 core–shell nanostructures. The thin layers of titanium dioxide on the zinc oxide nanorods were uniform and confirmed as pure anatase phase. The morphological, structural, optical and photoluminescence properties of the ZnO/TiO2 core–shell structures were influenced by coating time. For instance, the crystallinity of the titanium dioxide increased in accordance with an increase in the duration of the coating time. Additionally, the thickness of the titanium dioxide layer gradually increased with the coating time, resulting in an increased surface area. The transmittance of the arrayed ZnO/TiO2 core–shell structures was 65% after 15 min of coating. The obtained ZnO/TiO2 core–shell nanostructures demonstrated high potentiality to serve as photoanodes for application in dye-sensitized solar cells.

Plasmonic Enhancement of Dye-Sensitized Solar Cells Using Core–Shell–Shell Nanostructures

2013 ◽  
Vol 117 (2) ◽  
pp. 927-934 ◽  
Author(s):  
Stafford W. Sheehan ◽  
Heeso Noh ◽  
Gary W. Brudvig ◽  
Hui Cao ◽  
Charles A. Schmuttenmaer
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Plasmonic Enhancement ◽  
Dye Sensitized ◽  
Shell Nanostructures ◽  
Sensitized Solar Cells

Efficient ZnO Nanowire Solid-State Dye-Sensitized Solar Cells Using Organic Dyes and Core−shell Nanostructures

2009 ◽  
Vol 113 (43) ◽  
pp. 18515-18522 ◽  
Author(s):  
Natalie O. V. Plank ◽  
Ian Howard ◽  
Akshay Rao ◽  
Mark W. B. Wilson ◽  
Caterina Ducati ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Organic Dyes ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Zno Nanowire ◽  
Dye Sensitized ◽  
Shell Nanostructures ◽  
Sensitized Solar Cells

scholarly journals Tin-Doped Indium Oxide-Titania Core-Shell Nanostructures for Dye-Sensitized Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Luping Li ◽  
Cheng Xu ◽  
Yang Zhao ◽  
Kirk J. Ziegler
Keyword(s):  
Solar Cells ◽  
Indium Oxide ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Electron Recombination ◽  
Dye Sensitized ◽  
Annealing Temperatures ◽  
The Core ◽  
Shell Nanostructures ◽  
Sensitized Solar Cells

Dye-sensitized solar cells (DSSCs) hold great promise in the pursuit of reliable and cheap renewable energy. In this work, tin-doped indium oxide (ITO)-TiO2core-shell nanostructures are used as the photoanode for DSSCs. High-density, vertically aligned ITO nanowires are grown via a thermal evaporation method and TiO2is coated on nanowire surfaces via TiCl4treatment. It is found that high TiO2annealing temperatures increase the crystallinity of TiO2shell and suppress electron recombination in the core-shell nanostructures. High annealing temperatures also decrease dye loading. The highest efficiency of 3.39% is achieved at a TiO2annealing temperature of 500°C. When HfO2blocking layers are inserted between the core and shell of the nanowire, device efficiency is further increased to 5.83%, which is attributed to further suppression of electron recombination from ITO to the electrolyte. Open-circuit voltage decay (OCVD) measurements show that the electron lifetime increases by more than an order of magnitude upon HfO2insertion. ITO-TiO2core-shell nanostructures with HfO2blocking layers are promising photoanodes for DSSCs.

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