Metal-sulfide-decorated ZnO/Si nano-heterostructure arrays with enhanced photoelectrochemical performance

• Main Authors: Yadian, Boluo, Rao, Yuhan, Zhu, Bowen, Liu, Zhifeng, Liu, Qing, Gan, Chee Lip, Chen, Xiaodong, Huang, Yizhong
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2017
• Subjects: Metal Sulfide; ZnO/Si Heterostructure
• Online Access: https://hdl.handle.net/10356/85840; http://hdl.handle.net/10220/43856
• Institution: Nanyang Technological University

The present work reports an effective approach to fabricate highly ordered arrays of ZnO/Si heterostructures decorated with metal sulfides (i.e. ZnS and Ag2S). These metal-sulfide-coated ZnO/Si heterostructure arrays are then used as a photoanode in the photoelectrochemical water splitting system. The significant enhancement of ZnO/Si heterostructure arrays in photo-current density and on/off ratio is demonstrated after they are coated with metal sulfides. These metal-sulfide-coated ZnO/Si heterostructure arrays are a promising building block for the fabrication of optoelectronic devices such as photoelectrochemical cells.