Characterization of PbS/PVA/GQDs nanocomposite prepared by chemical bath deposition method Tavakkol Tohidi, Kazem Jamshidi-Ghaleh and Rahim Mohammad-Rezaei Eur. Phys. J. Appl. Phys., 68 1 (2014) 10403 Published online: 10 October 2014 DOI: 10.1051/epjap/2014140157