Zhou N.,Chinese Academy of Sciences |
Zhou N.,Beijing Key Laboratory for New Energy Materials and Devices |
Zhou N.,Beijing National Laboratory for Condense Matter Physics |
Zhou N.,CAS Institute of Physics |
And 24 more authors.
Electrochemistry Communications | Year: 2012
A new TiO 2 photoanode with hierarchical pore distribution was first employed to fabricate PbS/CdS co-sensitized quantum dot-sensitized solar cell (QDSC). Under AM 1.5 illumination of 100 mW·cm - 2, up to 3.82% of light-to-electricity conversion efficiency has been achieved, higher than the reported results of PbS/CdS QDSCs so far. The effects of PbS SILAR cycles, CdS deposition time and film thickness on cell performance were investigated. Furthermore, comparison between this photoanode with large spherical voids and conventional photoanode with large size TiO 2 scattering layer was carried out. This kind of photoanode can provide good scattering ability and large surface area, which is suitable for QDs efficient deposition and electrolyte penetration, exhibiting potential application in highly efficient QDSCs especially with high photocurrent. © 2012 Elsevier B.V. All rights reserved.