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- Title
Effect of TiO nanostructure morphology on the performance of a photoelectrochemical cell of ITO/TiO/electrolyte/platinum.
- Authors
Rahman, M.; Umar, A.; Roza, L.; Salleh, M.
- Abstract
The morphology of photovoltaic material is able to influence of the performance of photoelectrochemical cell. Polyvinylpyrrolidone (PVP), cetyltrimethylammonium bromide (CTAB), and hexamethylenetetramine (HMT) surfactant were used to modify the morphology nanostructure of TiO films by a simple technique, namely, liquid phase deposition during their growth process. It was found that the untreated surfactant TiO film produces the morphology with the mixture nanosphere and nanoflower. The film treated with PVP, CTAB, and HMT produce the nanostructure shape of nanoflower, nanowire, and nanorod, respectively. These TiO samples were utilized as photovoltaic materials in a photoelectrochemical cell of ITO/TiO/electrolyte/platinum. It was found that the photovoltaic parameters such as short-circuit current density ( J), open-circuit voltage ( V) and fill factor are influenced by the morphology in terms of shape and particle size of the TiO nanostructure. The cell utilizing the TiO nanowire treated with PVP possesses the highest J and V of 0.100 mAcm and 0.44 V. The length of the TiO nanowire is 6 ± 2 nm, while the cell with the untreated surfactant TiO sample demonstrates the lowest performance. It was also found that the J and V increase with the decrease in the length of the TiO nanostructures. The smallest length of TiO possesses the best interfacial contact at TiO/electrolyte containing iodide/triiodide redox couple. Thus, the redox reaction is optimized at this interface.
- Subjects
PARTICLE size distribution; PHOTOVOLTAIC cells; PHOTOELECTROCHEMICAL cells; POVIDONE; CETYLTRIMETHYLAMMONIUM bromide; METHENAMINE
- Publication
Journal of Solid State Electrochemistry, 2012, Vol 16, Issue 12, p3947
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-012-1844-y