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SUMMARY:Controllable Synthesis of Nanostructural Materials for High Perfor
 mance DSSCs - Prof. Dan Wang\, Chinese Academy of Sciences\, Beijing\, Chi
 na
DTSTART:20130719T103000Z
DTEND:20130719T113000Z
UID:TALK46388@talks.cam.ac.uk
CONTACT:Dr. Girish Lakhwani
DESCRIPTION:Dye-sensitized solar cells (DSSCs) have received much attentio
 n as the promising candidates for low-cost and large-area photovoltaic app
 lications. Hollow structures of ZnO and SnO2 with micron sized features ar
 e particularly attractive as the photoanodes for dye-sensitized solar cell
 s due to their high surface area to adsorb dye molecules\, relatively larg
 e size for scattering incident light. In this work\, we report a sacrifici
 al template method to fabricate multiple-shelled SnO2 and ZnO hollow micro
 spheres with close double shells in the exterior by using the carbonaceous
  microspheres as the templates. We successfully realize accurate control o
 ver the structure of the final products\, which is characteristic of multi
 -shelled hollow microspheres with the close double shells in the exterior.
  The quintuple-shelled SnO2 and quadruple-shelled ZnO hollow microspheres 
 ased DSSCs exhibit a high energy conversion efficiency of 7.18% (with TiCl
 4 treatment) and 5.6% respectively. This work may open up new opportunitie
 s for fabricating high performance DSSCs based on structural design and ma
 nipulation of the hollow microspheres.\n\nKeywords: SnO2\, ZnO\, multi-she
 lled hollow microspheres\, dye-sensitized solar cells\n\nREFERENCES [1] J.
  Wang\, N. Yang\, H. Tang\, Z. Dong\, Q. Jin\, M. Yang\, D. Kisailus\, H. 
 Zhao\, Z. Tang\, D. Wang\, Angew. Chem. Int. Ed. 2013\, 52\, 6417 [2]Z. Do
 ng\, X. Lai\, J. E. Halpert\, N. Yang\, L. Yi\, J. Zhai\, D. Wang\, Z. Tan
 g\, L. Jiang\, Adv. Mater. 2012\, 24\, 1046. [3] X. Lai\, J. Halpert\, D. 
 Wang\, Energy Environ. Sci. 2012\, 5\, 5604. [4] X. Lai\, J. Li\, B. Korge
 l\, Z. Dong\, Z. Li\, F. Su and D. Wang\, Angew. Chem. Int. Ed. 2011\, 50\
 , 2738
LOCATION:Kapitza Building Seminar Room\, Cavendish Laboratory\, Department
  of Physics
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