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Posted: Feb 22, 2012
Single-particle spectroscopy reveals role of surface defects
(Nanowerk News) Photoinduced interfacial electron transfer (ET) from covalently bound molecules or particles to a semiconductor oxide plays a critical role in solar cells, photocatalysis, and molecular electronics. Titania surfaces are a key factor influencing photoinduced charge injection processes from covalently bound chromophores. However, the dependence of ET on TiO2 structure, defects, and facets remains poorly understood because of the multitude of binding sites.