抄録
In recent years, mesoporous transition metal oxides synthesized through co-assembly of organic/inorganic species have attracted lots of interests towards photoelectric applications. Because many unique electronic properties of metal oxides emerge particularly in the crystalline state, forming crystal phases in the materials without destroying the mesostructure has been one of the major issues. In this study, we synthesize transparent and highly ordered cubic mesoporous titania thin films by carefully controlling the reaction conditions and aging the as-made thin film sample at -20°C for 24 hours. After calcination at 400°C for 4 hours, anatase nanocrystals were observed to exist in the thin film, which retained the highly ordered cubic mesostructure. Characterizations are carried out by SA-XRD and TEM and the photovoltaic properties are also measured.
