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Abstract
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This work reports synthesis of PbS quantum dots (QDs) embedded in the poly-vinyl alcohol
(PVA) in the presence of graphene quantum dots (GQDs) by the low cost and simple method of chemical
bath deposition. The as-synthesized products were characterized by X-ray diffraction, transmission electron
microscope and optical studies; absorption and photoluminescence measurements. Results showed that in
comparison with GQDs and PbS/PVA, photoluminescence intensity of PbS/PVA/GQDs was improved and
this could be attributed to rigidity of the local environment, PVA passivation and energy transformation
between GQDs and PbS QDs. These analyses determined good distribution of PbS QDs on GQDs planes
which is promising for practical applications in nanotechnology.
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