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We used time-resolved spectroscopies in terahertz and visible ranges complemented with Monte-Carlo simulations to assess the connection between ultrafast charge injection and formation and transport of mobile charge carriers in dye-sensitized nano-structured semiconductors.
We report a ZnO-nanostructure-based quartz crystal microbalance (nano-QCM) device for biosensing applications. ZnO nanotips are directly grown on the sensing area of a conventional QCM by metalorganic chemical vapor deposition (MOCVD). Scanning electron microscopy (SEM) shows that the ZnO nanotips are dense and uniformly aligned along the normal to the substrate surface. By using superhydrophilic...
Transient far-infrared conductivity of as-grown and dye-sensitized ZnO nanotips is measured using time-resolved terahertz spectroscopy. We reveal that the sensitization procedure dramatically affects the transport properties of ZnO nanotips.
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