Evidence for Slow Electron Transfer During Light-Driven Water Splitting

7 Evidence for Slow Electron Transfer During Light-Driven Water Splitting 

The general solution of Equation (18.16) leads to the following normalised expressions for the on and off photocurrent transients 

(0) is the instantaneous photocurrent observed when the light is switched on. It corresponds to the displacement current qjp.j oo) is the steady-state photocurrent, that is, the plateau following the initial decay, jit/to) is the off transient observed when the light is switched off a t = to- Inspection of these equations reveals that the two unknown parameters 

The author is grateful to Martin Fleischmann and Graham Hills for tempting him to return to Southampton from Heinz Gerischer s group in Berlin in order to commence work on photoelectrochemistry, an area in which he has enjoyed working for the past 35 years. 

Khaselev, O. and Turner, J.A. (1998) A monohthic photovoltaic-photoelectrochemical device for hydrogen production via water splitting. Science, 280, 425 27. 

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