Abstract
The characteristics of the transport of photogenerated electrons through electrodes consisting of nanometer-size Ti${\mathrm{O}}_{2}$ particles were investigated by intensity modulated photocurrent spectroscopy. Electronic transport is controlled by trapping and detrapping of photogenerated electrons in interfacial bandgap states, distributed in energy. The localization time of a trapped electron is controlled by the steady-state light intensity and interfacial kinetics.
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