Kunst, M. ; Goubard, F. ; Colbeau-Justin, C. ; Wünsch, F.: Electronic transport in semiconductor nanoparticles for photocatalytic and photovoltaic applications. Materials Science and Engineering C 27 (2007), p. 1061-1064
Abstract:
It is shown by contactless transient photoconductance measurements that electron transport in TiO2 is highly dispersive and is strongly influienced by surface treatments. A fast recombination process is observed after band to band excitation. Oxalic acid absorbed at the surface slows the decay appreciably, as does alcohol.