Phosphorescence of CdS nanoparticles in polymer matrix as an indication of host-guest interaction
Materials Chemistry and Physics(2016)
摘要
We report on the observation of the long-lasting low-temperature photoluminescence decay in the hybrid system nano-CdS/polyvinyl alcohol with a characteristic time of about 1.7 s. The origin of the phosphorescence is ascribed to the accumulation of photo-excited excitons in the traps within the polymeric matrix with subsequent transfer of the excitation to the embedded CdS nanoparticles.
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关键词
Composite materials,Nanostructures,Photoluminescence spectroscopy,Semiconductors
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