Structural changes and charge transport in heterogenous and molecular cobalt catalysts for water splitting reactions

2020 ◽  
Author(s):  
David Tiede ◽  
Lin Chen ◽  
Emily Sprague-Klein
Keyword(s):  
Charge Transport ◽  
Water Splitting ◽  
Structural Changes ◽  
Cobalt Catalysts

Charge-Transport in Partially-Ordered Regioregular Poly(3-Hexylthiophene) Studied as a Function of the Charge-carrier Density

2000 ◽  
Vol 660 ◽  
Author(s):  
D.B.A. Rep ◽  
B.-H. Huisman ◽  
E.J. Meijer ◽  
P. Prins ◽  
T.M. Klapwijk
Keyword(s):  
Charge Carrier ◽  
Charge Transport ◽  
Conjugated Polymer ◽  
Carrier Density ◽  
Structural Changes ◽  
Charge Carriers ◽  
Charge Carrier Density ◽  
Partially Ordered ◽  
Regioregular Poly

ABSTRACTWe demonstrate that charge-transport in partially-ordered thin films of poly(3- hexylthiophene) is strongly dependent on the charge-carrier density in the film, which we relate to the localized nature of the charge carriers. We base our conclusions on measurements in which the charge-carrier density is varied by electrostatic means (in a transistor geometry) and by in- situ thermal removal of oxygen dopants. For the doping levels investigated, we argue that the removal of oxygen does not induce structural changes in the conjugated polymer, and that it only shifts the Fermi-level of the film.

Effects of yttrium, ytterbium with tungsten co-doping on the light absorption and charge transport properties of bismuth vanadate photoanodes to achieve superior photoelectrochemical water splitting

2020 ◽  
Vol 4 (3) ◽  
pp. 1496-1506 ◽  
Author(s):  
Umesh Prasad ◽  
Jyoti Prakash ◽  
Arunachala M. Kannan
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Water Splitting ◽  
Light Absorption ◽  
Bismuth Vanadate ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Cell ◽  
Co Doping ◽  
Effective Water

Effective water splitting by a photoelectrochemical cell using a BiVO4 photoanode is limited by the light absorption and charge transport properties.

Orientation modulated charge transport in hematite for photoelectrochemical water splitting

2016 ◽  
Vol 09 (03) ◽  
pp. 1650047 ◽  
Author(s):  
Jiajia Cai ◽  
Yinglei Liu ◽  
Song Li ◽  
Meiqi Gao ◽  
Dunwei Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Crystal ◽  
Charge Transport ◽  
Water Splitting ◽  
High Magnetic Field ◽  
Current Method ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Performance

Hematite is currently considered one of the most promising photoanode materials for light-driven water splitting. The photoelectrochemical performance of hematite is limited by its low conductivity. In this work, we demonstrate that the conductivity of hematite films can be tuned by controlling the orientation of hematite crystals. By applying a high magnetic field (up to 10 T) during the drop-casting preparation, hematite films composed of single crystal particles show featured texture by promoting those particles alignment with (001) normal to the substrate. By enhancing the photocurrent densities with tuned hematite orientation, the current method provides an effective way for increasing the number of carriers that can reach the surface.

scholarly journals Understanding charge transport in non-doped pristine and surface passivated hematite (Fe2O3) nanorods under front and backside illumination in the context of light induced water splitting

2016 ◽  
Vol 18 (44) ◽  
pp. 30370-30378 ◽  
Author(s):  
Prince Saurabh Bassi ◽  
Li Xianglin ◽  
Yanan Fang ◽  
Joachim Say Chye Loo ◽  
James Barber ◽  
...  
Keyword(s):  
Charge Transport ◽  
Water Splitting ◽  
Annealing Temperature ◽  
Depth Study ◽  
Hematite Fe2o3

This work reports an in-depth study of the performance of hematite nanorods under back and front illumination while varying the crucial annealing temperature.

Charge Transport Dynamics and Redox Induced Structural Changes within Solid Deposits of a Ruthenium Dimer

Langmuir ◽  
2002 ◽  
Vol 18 (25) ◽  
pp. 9874-9881 ◽  
Author(s):  
Graeme A. Snook ◽  
Yvonne Cooney ◽  
Tia E. Keyes ◽  
Robert J. Forster
Keyword(s):  
Charge Transport ◽  
Structural Changes ◽  
Transport Dynamics

Enhancing interfacial charge transfer in WO3/BiVO4 photoanode heterojunction through gallium and tungsten co-doping and sulfur modified Bi2O3 interfacial layer

2021 ◽  
Author(s):  
Umesh Prasad ◽  
James Luke Young ◽  
Justin C. Johnson ◽  
Deborah McGott ◽  
Hengfei Gu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Transport ◽  
Water Splitting ◽  
Interfacial Layer ◽  
Photoelectrochemical Water Splitting ◽  
Interfacial Charge Transfer ◽  
Co Doping ◽  
Interfacial Charge ◽  
And Tungsten

Photoanodes containing a WO3/BiVO4 heterojunction have demonstrated promising photoelectrochemical water splitting performance, but the ability to effectively passivate the WO3/BiVO4 interface has limited charge transport and collection. Here, the WO3/BiVO4...

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