Advanced Materials, Vol.27, No.5, 892-896, 2015
An Organic Surface Modifier to Produce a High Work Function Transparent Electrode for High Performance Polymer Solar Cells
Modification of an ITO electrode with small-molecule organic surface modifier, 4-chlorobenzoic acid (CBA), via a simple spin-coating method produces a highwork- function electrode with high transparency and a hydrophobic surface. As an alternative to PEDOT: PSS, CBA modification achieves efficiency enhancement up to 8.5%, which is attributed to enhanced light absorption within the active layer and smooth hole transport from the active layer to the anode.