Abstract
SiO2nanoparticles (NPs) are synthesized in ethanol solution and mixed with polyvinyl carbazole (PVK). The sizes of SiO2NPs are 40nm and 60nm. PVK/SiO2NPs compound systems with different sizes and with different ratios of mass fraction are obtained. Photoluminescence spectra are employed to research the optical properties of PVK molecules and PVK/SiO2NPs compound system. In compound system, the process of interface energy transfer between PVK and SiO2NPs are observed. The mainly energy transfer form is nonradiative resonance transfer.
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