Laser induced photocurrent transients and capacitance measurements on nanocrystalline TiO2 electrodes

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作者：
Dep of Physical Chemistry, Uppsala, Sweden [1 ]
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来源：
Sol Energ Mater Sol Cells | / 1-4卷 / 339-341期
关键词：
Absorption spectroscopy - Capacitance measurement - Charge carriers - Charge transfer - Electric currents - Electron energy levels - Laser beam effects - Laser pulses - Nanostructured materials - Titanium dioxide;
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摘要：
A qualitative description of charge carrier separation and charge transport in nanocrystalline, porous, TiO2 is presented. These processes are studied under steady-state conditions by means of action spectra in the UV-region. The transparent nature of these electron allows motoring of the transient absorbance as well as the photocurrent following a ns laser pulses, band gap excitation. The photo-electrochemical behavior of the semiconductor electrodes is further studied by capacitance measurements.
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