By a News Reporter-Staff News Editor at Journal of Technology -- Investigators discuss new findings in Materials Science. According to news reporting originating from Changsha, People's Republic of China, by VerticalNews correspondents, research stated, "Effective blockage of recombination electron transfer of a fast electron transfer redox couple (ferrocenium/ferrocene or Fc(+)/Fc) at TiO2 nanowire array electrodes is achieved by silanization of the dye loaded TiO2 nanowire array. FT-IR clearly shows the formation of polysiloxane network at fluorine doped tin electrodes covered with TiO2 nanowire arrays and the dye molecules."
Our news editors obtained a quote from the research from Central South University, "Compared to the commonly used TiO2 nanoparticle film electrodes, the TiO2 nanowire array has a more spatially accessible structure, facilitating the formation of uniform polysiloxane films. Energy-dispersive X-ray spectroscopy (EDS) also reveals the presence of Si over multiple spots at the cross sections of the silanized TiO2 nanowire array electrodes. As a result, a rather high open-cell voltage V-oc (0.69 V) and an enhanced efficiency (0.749 %) for DSSC with the Fc(+)/Fc couple were obtained. Contrary to the passivated TiO2 nanoparticle film electrodes at which a complex, biphasic dependence of electron lifetime on V-oc was observed, we recorded a logarithm linear dependence of the lifetime on V-oc after the silanization treatment."
According to the news editors, the research concluded: "The nanowire arrays with optimal salinization treatments afford a useful surface for the study of electron recombination and photovoltaic generation in DSSCs."
For more information on this research see: Effective Blockage of the Interfacial Recombination Process at TiO2 Nanowire Array Electrodes in Dye-Sensitized Solar Cells. ACS Applied Materials & Interfaces, 2013;5(22):11906-11912. ACS Applied Materials & Interfaces can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; ACS Applied Materials & Interfaces - www.pubs.acs.org/journal/aamick)
The news editors report that additional information may be obtained by contacting D.L. Jiang, Central South University, State Key Lab Powder Met, Changsha 410083, Hunan, People's Republic of China. Additional authors for this research include Y.Q. Hao, R.J. Shen, S. Ghazarian, A. Ramos and F.M. Zhou.
Keywords for this news article include: Asia, Changsha, Materials Science, People's Republic of China
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