Transparent Conducting Films of Antimony-Doped Tin Oxide with Uniform Mesostructure Assembled from Preformed Nanocrystals

摘要

The recent rapid progress in nanoscience and nanotechnology has led to the development of completely new nanoscale materials. Novel morphologies in already known materials have substantially extended their application potential.[1] Transparent conducting oxides are known as thin, dense films, being indispensable for touch-panel displays, organic lightemitting diodes (OLEDs), or nonsilicon solar cells.[2,3] However, other types of optoelectronic devices, especially those involving immobilized species or functional layers, such as biochemical sensors,[4] supramolecular energy-conversion junctions,[5] or redox-protein-based arrays,[6–8] require threedimensional (3D) conducting networks rather than flat electrode interfaces. Such 3D electrode architectures with very high interface areas are suitable as conducting hosts accommodating functional guest species, which allows a substantially more efficient electron transfer and consequently increases the efficiency of the devices.