scholarly journals Efficient suppression of back electron/hole recombination in cobalt phosphate surface-modified undoped bismuth vanadate photoanodes

2015 ◽  
Vol 3 (41) ◽  
pp. 20649-20657 ◽  
Author(s):  
Yimeng Ma ◽  
Florian Le Formal ◽  
Andreas Kafizas ◽  
Stephanie R. Pendlebury ◽  
James R. Durrant
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Bismuth Vanadate ◽  
Transient Absorption Spectroscopy ◽  
Electron Hole ◽  
Onset Potential ◽  
Transient Photocurrent ◽  
Efficient Suppression ◽  
Surface Modified ◽  
Hole Recombination

BiVO4/CoPi photoanodes are studied using transient absorption spectroscopy and transient photocurrent methods. The cathodic shift of photocurrent onset potential is due to efficient suppression of back electron/hole recombination on the timescale of seconds.

scholarly journals Dynamics of photogenerated holes in undoped BiVO4 photoanodes for solar water oxidation

2014 ◽  
Vol 5 (8) ◽  
pp. 2964-2973 ◽  
Author(s):  
Yimeng Ma ◽  
Stephanie R. Pendlebury ◽  
Anna Reynal ◽  
Florian Le Formal ◽  
James R. Durrant
Keyword(s):  
Absorption Spectroscopy ◽  
Water Oxidation ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Electron Hole ◽  
Solar Water ◽  
Solar Water Oxidation ◽  
Oxidation Efficiency ◽  
Hole Recombination

We use transient absorption spectroscopy and photoelectrochemical methods to study the dynamics of photogenerated holes in BiVO4 for solar water oxidation. The back electron/hole recombination is found to be slow and therefore competes with water oxidation, limiting water oxidation efficiency.

Core-level transient absorption spectroscopy as a probe of electron hole relaxation in photoionized H+(H2O)n

2014 ◽  
Vol 171 ◽  
pp. 457-470 ◽  
Author(s):  
Zheng Li ◽  
Mohamed El-Amine Madjet ◽  
Oriol Vendrell ◽  
Robin Santra
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Core Level ◽  
Transient Absorption Spectroscopy ◽  
Electron Hole

Analysis of the relaxation process of electron–hole pairs in α-Al2O3 using transient absorption spectroscopy

2017 ◽  
Vol 28 (10) ◽  
pp. 7091-7094
Author(s):  
Masanori Koshimizu ◽  
Yusa Muroya ◽  
Shinichi Yamashita ◽  
Hiroki Yamamoto ◽  
Yutaka Fujimoto ◽  
...  
Keyword(s):  
Relaxation Process ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Electron Hole ◽  
Α Al2o3

Delayed electron–hole pair recombination in iron(iii)-oxo metal–organic frameworks

2014 ◽  
Vol 16 (11) ◽  
pp. 5044-5047 ◽  
Author(s):  
Katrien G. M. Laurier ◽  
Eduard Fron ◽  
Pedro Atienzar ◽  
Koen Kennes ◽  
Hermenegildo Garcia ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Electron Acceptor ◽  
Redox Reactions ◽  
Methyl Viologen ◽  
Transient Absorption ◽  
Metal Organic Frameworks ◽  
Transient Absorption Spectroscopy ◽  
Electron Hole ◽  
Electron Hole Pair ◽  
Metal Organic

The photodynamic properties of a series of Fe(iii)-MOFs have been examined via redox reactions with N,N,N′,N′-tetramethyl-p-phenylenediamine as an electron donor and methyl viologen as an electron acceptor. Furthermore, photogeneration of long-lived species in MIL-88B(Fe) has been proven via transient absorption spectroscopy.

Charge-Transfer Dynamics at Ag/Ni-MOF/Cu2O heterostructure in Photoelectrochemical NH3 production

2021 ◽  
Author(s):  
Ying Liu ◽  
Jianmin Lu ◽  
Qianxiao Zhang ◽  
Yajie Bai ◽  
Xuliang Pang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Yield Rate ◽  
Ultrafast Transient Absorption ◽  
Charge Transfer Dynamics ◽  
Ultrafast Transient Absorption Spectroscopy

Decoration of Ag-ultrathin Ni-MOF onside Cu2O was firstly fabricated. The charge-transfer dynamics at heterostructure was in-depth revealed by ultrafast transient absorption spectroscopy. NH3 yield rate (4.63 μg h-1 cm-2) with...

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