Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University
The efficiency of dye-sensitized solar cells (DSSCs) is generally limited by the mismatch between the absorption spectrum of the photosensitizer and the solar irradiation spectrum. This work describes the use of a mixture that containing proper proportions of SiO2 coated Au nanospheres (AuNSs@SiO2) and Au nanorods (AuNRs@SiO2) (the mixture was denoted as AuNCs@SiO2) to enhance the sunlight utility in DSSCs. The incorporation of AuNCs@SiO2 into the TiO2 photoanode induced broadband light-harvesting at both low- and long- wavelengths and thus enhanced the photocurrent compared to that of plasmonic solar cells based on either AuNSs@SiO2 or AuNRs@SiO2. Upon the doping of AuNCs@SiO2, the overall power conversion efficiency (PCE) increased from 7.39 to 9.12 % for DSSCs based on organic liquid electrolytes.
链接://onlinelibrary.wiley.com/doi/10.1002/cssc.201600110/full