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Improved electron transportation of dye-sensitized solar cells using uniform mixed CNTs-TiO2 photoanode prepared by a new polymeric gel process
, Article Journal of Nanoparticle Research ; Volume 15, Issue 9 , 2013 ; 13880764 (ISSN) ; Mohammadi, M. R ; Masihi, N ; Akhlaghi, M. H ; Sharif University of Technology
2013
Abstract
A new facile strategy for fabrication of high surface area electrode in the form of mixtures of coated carbon nanotubes (CNTs) and TiO2 nanoparticles with various weight ratios is reported. The so-called polymeric gel process was used to deposit thick film containing uniform distribution of TiO2 nanoparticles and coated CNTs with high porosity by dip coating for dye-sensitized solar cells (DSSCs) applications. Based on simultaneous differential thermal analysis, the minimum annealing temperature to obtain inorganic- and organic-free films was determined at 500°C. X-ray diffraction analysis revealed that deposited films were composed of primary nanoparticles with crystallite size in the range...
Development of nanostructured porous TiO2 thick film with uniform spherical particles by a new polymeric gel process for dye-sensitized solar cell applications
, Article Electrochimica Acta ; Volume 89 , February , 2013 , Pages 90-97 ; 00134686 (ISSN) ; Mohammadi, M. R ; Sharif University of Technology
2013
Abstract
A novel simple synthetic procedure for fabrication of high surface area nanostructured TiO2 electrode with uniform particles for photovoltaic application is reported. Modifying the TiO2 particulate sol by pH adjustment together with employment of a polymeric agent, so-called polymeric gel process, was developed. The polymeric gel process was used to deposit nanostructured thick electrode by dip coating incorporated in dye-sensitized solar cells (DSSCs). X-ray diffraction (XRD) analysis revealed that deposited film was composed of primary nanoparticles with average crystallite size in the range 21-39 nm. Field emission scanning electron microscope (FE-SEM) images showed that deposited film...