Publication

Nanocrystalline electronic junctions

Michael Graetzel
1996
Conference Papers

Abstract

Nanocrystalline semiconductor films are constituted by a network of mesoscopic oxide particles, such as TiO2, ZnO, Nb2O5 which are interconnected to allow for electronic conduction to take place. The pores between the particles are filled with a semiconducting or a conducting medium, such as a hole transmitter or an electrolyte, forming a junction of extremely large contact area. The salient features of such mesoporous films are: i) an extremely large internal surface area, the roughness factors being in excess of 1000 for a film thickness of 8 microns; ii) the ease of charge carrier percolation across the nanoparticle network making this huge surface electronically addressable; iii) a very rapid and highly efficient interfacial charge transfer between the oxide and redox active species anchored to the particle surface. and iv) the rapid intercalation and release of Li+ ions into such films.

Official source

https://infoscience.epfl.ch/entities/publication/63101524-30ef-408d-a488-8dda900e3a31

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Michael Graetzel
1996
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/63101524-30ef-408d-a488-8dda900e3a31

About this result

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Nanocrystalline electronic junctions

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