Fig. 3From: Surfactant-Tuned Phase Structure and Morphologies of Cu2ZnSnS4 Hierarchical Microstructures and Their Visible-Light Photocatalytic ActivitiesRaman spectra of CZTS hierarchical microstructures obtained at 200 °C for 48 h with the different amounts of tartaric acid (TA), such as 1:2, 1:4, and 1:8Back to article page