Articles written in Journal of Chemical Sciences
Volume 109 Issue 6 December 1997 pp 497-507 Photochemical Conversion And Storage Of Solar Energy
Cds-capped SnO2 (CdS@SnO2) and SiO2 (CdS@SiO2) colloids of 50–80 Å in diameter have been prepared in aqueous medium. Significant quenching of CdS emission is observed in the CdS@SnO2 system as the electrons are injected from the excited CdS shell into the SnO2 core. Photoinduced charge separation in this system also results in transient bleaching in the 450 nm region. Picosecond laser flash photolysis studies of composite semiconductor nanoclusters that highlight the effect of the metal oxide core on the photophysical properties of the outer CdS shell are described.
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