Fig. 4From: Improved Efficiency of Silicon Nanoholes/Gold Nanoparticles/Organic Hybrid Solar Cells via Localized Surface Plasmon Resonance a Optical absorption spectra of colloidal AuNPS dispersed in deionized water. b Optical absorption spectra of the PEDOT:PSS/AuNPS/(AgNPS/SiNHS) nanocomposite films in different etching time and the films without AgNPSBack to article page