Interfacial Charge Transport in 1D TiO 2 Based Photoelectrodes for Photoelectrochemical Water Splitting

Small ◽  
2019 ◽  
pp. 1903378 ◽  
Author(s):  
Zhongrui Yu ◽  
Haobo Liu ◽  
Mingyuan Zhu ◽  
Ying Li ◽  
Wenxian Li
Keyword(s):  
Charge Transport ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Interfacial Charge

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...

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 Facile Growth of Porous Hematite Films for Photoelectrochemical Water Splitting

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Shaohua Shen ◽  
Jiangang Jiang ◽  
Penghui Guo ◽  
Liejin Guo
Keyword(s):  
Water Splitting ◽  
High Performance ◽  
Carrier Transport ◽  
Photoelectrochemical Water Splitting ◽  
Photon Absorption ◽  
Photoelectrochemical Activity ◽  
Simple Method ◽  
Facile Fabrication ◽  
Single Precursor ◽  
Interfacial Charge

We introduced a simple fabrication method of porous hematite films with tunable thickness in an aqueous solution containing FeCl3as the single precursor. We demonstrated that the optimized thickness was necessary for high performance photoelectrochemical water splitting, by balancing photon absorption and charge carrier transport. The highest photocurrent ofca. 0.15 mA cm−2at 1.0 V versus Ag/AgCl was achieved on the 300 nm thick porous hematite film as photoanode, with IPCE at 370 nm and 0.65 V versus Ag/AgCl to be 9.0%. This simple method allows the facile fabrication of hematite films with porous nanostructure for enabling high photon harvesting efficiency and maximized interfacial charge transfer. These porous hematite films fabricated by this simple solution-based method could be easily modified by metal doping for further enhanced photoelectrochemical activity for water splitting.

Synergistic effect of Sn doping and hydrogenation on hematite electrodes for photoelectrochemical water oxidation

2021 ◽  
Author(s):  
Tae Hwa Jeon ◽  
Hae-in Cho ◽  
Hyunwoong Park ◽  
Hyoung-il Kim ◽  
Wonyong Choi
Keyword(s):  
Synergistic Effect ◽  
Charge Transport ◽  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Water Splitting ◽  
Sn Doping ◽  
Photoelectrochemical Water Oxidation

A hematite photoanode with dual-modification by Sn doping and H2 treatment exhibits outstanding photoelectrochemical water splitting performance with improved charge transport and separation because of the synchronous presence of Sn4+ and Vo.

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