Fig. 2From: Boosting Power Conversion Efficiency of Quantum Dot-Sensitized Solar Cells by Integrating Concentrating Photovoltaic Concept with Double PhotoanodesSEM images of the mesh-structured Cu2S counter electrode: a top view; b, c enlarged view of surface morphology; d cross-sectional view and enlarged view of the Cu2S layer. e EDS of Cu2S. f, g XPS survey spectrums of Cu2S samplesBack to article page