IRREVERSIBLE PHOTOCHEMICAL SPECTRAL HOLE-BURNING IN QUANTUM-SIZED CDS NANOCRYSTALS EMBEDDED IN A POLYMERIC FILM

被引:8
作者
ARTEMYEV, MV [1 ]
GAPONENKO, SV [1 ]
GERMANENKO, IN [1 ]
KAPITONOV, AM [1 ]
机构
[1] BI STEPANOV PHYS INST, MINSK 220072, BELARUS
关键词
D O I
10.1016/0009-2614(95)00866-3
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The effect of permanent hole burning is studied in the absorption spectra of quantum-sized CdS nanocrystals embedded in a polymeric film. The prolonged UV irradiation of CdS particles with mean diameter of about 3 nm and wide size distribution results in the formation of well-resolved dips with full-width of about 100-120 meV at room temperature. The selected photoexcitation of appropriate QS CdS nanocrystals is followed by their ionization and further irreversible oxidation of CdS phase by holes h(+).
引用
收藏
页码:450 / 455
页数:6
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