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| Paper IPM / Physic / 15076 |
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Lead sulfide quantum dots (PbS QDs) were decorated onto a graphene surface in a semi-coreâshell structure using supercritical ethanol. The temperature of ethanol played significant role in controlling size and agglomeration of QDs as well as the extent of reduction of graphene. Average size of the QDs was estimated by transmission electron microscopy to be around 3.96 nm and by quantum models to be about 4.34 nm. PbS QDs prepared at 330 °C were of high purity, and the yield was 99
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