Functionalization of SnO2 photoanode through Mg-doping and TiO2-coating to synergically boost dye-sensitized solar cell performance

• Main Authors: Pang, Hongchang, Yang, Hongbin, Guo, Chun Xian, Li, Chang Ming
• Other Authors: School of Chemical and Biomedical Engineering
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/96369; http://hdl.handle.net/10220/10256
• Institution: Nanyang Technological University

Mg-doped SnO2 with an ultrathin TiO2 coating layer was successfully synthesized through a facile nanoengineering art. Mg-doping and TiO2-coating constructed functionally multi-interfaced SnO2 photoanode for blocking charge recombination and enhancing charge transfer in dye-sensitized solar cells (DSC). The designed nanostructure might play a synergistic effect on the reducing recombination and prolonging the lifetime in DSC device. Consequently, a maximum power conversion efficiency of 4.15% was obtained for solar cells fabricated with the SnO2-based photoelectrode, exhibiting beyond 5-fold improvement in comparison with pure SnO2 nanomterials photoelectrode DSC (0.85%).