Potential-Dependent Recombination Kinetics of Photogenerated Electrons in n- and p-Type GaN Photoelectrodes Studied by Time-Resolved IR Absorption Spectroscopy

2011 ◽  
Vol 133 (29) ◽  
pp. 11351-11357 ◽  
Author(s):  
Akira Yamakata ◽  
Masaaki Yoshida ◽  
Jun Kubota ◽  
Masatoshi Osawa ◽  
Kazunari Domen
2003 ◽  
Vol 5 (1) ◽  
pp. 7-9 ◽  
Author(s):  
Akira Yamakata ◽  
Taka-aki Ishibashi ◽  
Hiroshi Onishi

The decay kinetics of photogenerated electrons in the water splitting reaction on a Pt/TiO2photocatalyst was studied by time-resolved IR absorption spectroscopy. The decay of the photogenerated electrons within 2μs was decelerated when the catalyst was exposed to water vapor. The holes were consumed by the reaction with water instead of by the recombination with the electrons. On the other hand, the decay at 10–900μs was accelerated by the exposure. The electrons were consumed by the reaction with water. The rate of the hole-consuming reaction was independent of the pressure of water vapor, whereas that of the electron-consuming reaction increased with the pressure from 1 to 10 Torr. The different pressure dependences indicate different reactants involved in the oxidative and reductive reactants.


2000 ◽  
Vol 104 (17) ◽  
pp. 3964-3973 ◽  
Author(s):  
Sergey A. Nizkorodov ◽  
Warren W. Harper ◽  
Bradley W. Blackmon ◽  
David J. Nesbitt

1991 ◽  
Vol 45 (3) ◽  
pp. 390-397 ◽  
Author(s):  
Wolfgang Uhmann ◽  
Andreas Becker ◽  
Christoph Taran ◽  
Friedrich Siebert

Vacuum ◽  
2002 ◽  
Vol 64 (3-4) ◽  
pp. 457-465 ◽  
Author(s):  
I. Tanarro ◽  
T. de los Arcos ◽  
C. Domingo ◽  
V.J. Herrero ◽  
M.M. Sanz

2013 ◽  
Vol 105 (12) ◽  
pp. 2706-2713 ◽  
Author(s):  
Andreas Schwaighofer ◽  
Christoph Steininger ◽  
David M. Hildenbrandt ◽  
Johannes Srajer ◽  
Christoph Nowak ◽  
...  

2018 ◽  
Vol 20 (38) ◽  
pp. 24940-24954 ◽  
Author(s):  
Daniel Stone ◽  
Kendrew Au ◽  
Samantha Sime ◽  
Diogo J. Medeiros ◽  
Mark Blitz ◽  
...  

Decomposition kinetics of stabilised CH2OO and CD2OO Criegee intermediates have been investigated as a function of temperature (450–650 K) and pressure (2–350 Torr) using flash photolysis coupled with time-resolved cavity-enhanced broadband UV absorption spectroscopy.


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