Fig. 5From: 3D Hierarchical Bi2S3 Nanostructures by Polyvinylpyrrolidone (PVP) and Chloride Ion-Assisted Synthesis and Their Photodetecting PropertiesFE-SEM images of the samples synthesized with different quantity of KCl: a 0.01 g, b 0.03 g, c 0.05 g, and d 0.1 gBack to article page