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Journal Article

Dynamics of ultrafast photoinduced heterogeneous electron transfer, implications for recent solar energy conversion scenarios

MPS-Authors

Burfeindt,  Bernd
Fritz Haber Institute, Max Planck Society;

Mahrt,  Jürgen
Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons22242

Willig,  Frank
Fritz Haber Institute, Max Planck Society;

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Citation

Gundlach, L., Burfeindt, B., Mahrt, J., & Willig, F. (2012). Dynamics of ultrafast photoinduced heterogeneous electron transfer, implications for recent solar energy conversion scenarios. Chemical Physics Letters, 545, 35-39. doi:http://dx.doi.org/10.1016/j.cplett.2012.07.011.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-76D5-2
Abstract
The general case of a heterogeneous electron transfer reaction is realized by ultrafast electron transfer from a photo-excited molecule to a wide continuum of electronic acceptor states. Two different theoretical model calculations addressing the injection dynamics have recently been presented. The first scenario predicts a wide energy distribution for the injected electron via excitations of high-energy vibrational modes in the ionized molecule, whereas the second scenario ascribes the width to thermal fluctuations. We present experimental data at different temperatures and identify the valid injection scenario for perylene/TiO2 systems. The results are discussed in view of recent solar energy conversion scenarios.