“…Polymer capped semiconductor layers had enhanced and tunable optical, and electrical properties for their potential applications in various fields such as solar cells, field effect transistors, optical switching, light emitting diodes and photodetectors [32][33][34][35] . Many materials such as polyvinyl alcohol, polyacrylic acid, polyacrylonitrile, polyethylene glycol, polymethyl methacrylate and polyvinylpyrrolidone have been used as capping agents [36,37] . Among all these polymers, there is currently a great interest in polyvinyl alcohol (PVA) for researchers due to its superior properties such as good film forming ability, bio-degradability, non-toxicity, hydrophilicity, low cost, chemical resistance and transparency over the whole visible spectrum [38][39][40] .…”