Abstract
In the present work, we report the synthesis of colloidal CdS nanoparticles with different sizes and the band gaps of these samples exhibit a systematic dependence on the size of particles. We also study the photophysical properties of CdS nanoparticles and the energy transfer from CdS nanoparticles to Rhodamine 6G dyes by steady state and time resolved photoluminescence spectroscopy. The experimental results show that the relaxation of the excited state of CdS nanoparticles is composed of three different components. The calculated energy transfer efficiency from CdS nanoparticles to dye is 43% for 3.0 nm CdS nanoparticles.
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