Capped semiconductor colloids: Synthesis and photochemistry of CdS capped SnO2 nanocrystallites
摘要：
Cds-capped SnO 2 (CdS@SnO 2 ) and SiO 2 (CdS@SiO 2 ) colloids of 50–80 in diameter have been prepared in aqueous medium. Significant quenching of CdS emission is observed in the CdS@SnO 2 system as the electrons are injected from the excited CdS shell into the SnO 2 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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DOI：
10.1007/BF02869209
被引量：
年份：
1997
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