科研之友
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摘要
PbS quantum dots were prepared in the aqueous medium from readily available precursors. The shape of the particles is approximately spherical, and the average particle size was observed from HR-TEM image to be 7-8 nm. We employed PbS quantum dots and PMMA polymer to fabricate PbS quantum dots-PMMA composites, and investigate photoluminescence PbS quantum dots in PMMA matrix with different mass ratio. PbS quantum dots in PMMA matrix have broad emission between 900 nm and 1500 nm and photoluminescence peak at 1179 nm; additionally photoluminescence intensity increases with increasing dopant concentration. PbS quantum dots-PMMA polymer composites can be employed for polymer optical fiber and electroluminescence (EL) for optical communication potentially.
