Abstract
The combination of composite insulating oxide layers alternating with semiconducting layers and metals can provide various types of novel applications and eventually provide unique and advanced levels of nanoscale photovoltaic devices. Semiconducting TiO2 nanotubes have potential applications in photovoltaic devices and have been incorporated into organic-inorganic solar cells using highly arrayed nanostructures that promise new levels of performance and efficiency. The 3-dimensional parameters such as thickness, spacing, and height of the nanostructures are controlled non-lithographically by Atomic Layer Deposition (ALD) technology. The crucial process for sacrificial spacer layers to be filled with organic blends for photo-absorption is discussed. The semiconducting ZnO has been used as electrode to connect electrically isolated TiO2 nanotubes.
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