Figure 5From: Modification of light absorption in thin CuInS2 films by sprayed Au nanoparticlesSEM images of CIS thin films covered with Au nanoparticles. Au nanoparticles were obtained by spray of 2 mM HAuCl4 aqueous solution at 340°C onto CIS films using solution amounts of (a) 2.5 ml, (b) 10 ml, and (c) 15 ml.Back to article page