Low-temperature chemical synthesis of rutile and anatase mixed phase TiO^sub 2^ nanostructures for DSSCs photoanodes

Wet chemical deposition method by using copper salt doping approach is used to synthesize mixed phase (rutile and anatase) titanium dioxide (TiO2) nanostructures. Pristine and Cu-doped TiO2 photoanodes are analyzed for their physical properties. The results showed a significant influence of Cu-salt...

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Bibliographic Details
Published in:Journal of alloys and compounds 2017-05, Vol.704, p.187
Main Authors: Tehare, Kailas K, Bhande, Sambhaji S, Mutkule, Sandesh U, Stadler, Florian J, Ao, Jin-Ping, Mane, Rajaram S, Liu, Xinke
Format: Article
Language:English
Subjects:
Anatase
Chemical synthesis
Chemical vapor deposition
Copper
Doping
Dye-sensitized solar cells
Electrochemical analysis
Energy conversion efficiency
Energy dispersive X ray analysis
Low temperature
Optical properties
Photoanodes
Photovoltaic cells
Physical properties
Porosity
Rutile
Surface energy
Titanium oxides
X ray analysis
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Summary:Wet chemical deposition method by using copper salt doping approach is used to synthesize mixed phase (rutile and anatase) titanium dioxide (TiO2) nanostructures. Pristine and Cu-doped TiO2 photoanodes are analyzed for their physical properties. The results showed a significant influence of Cu-salt concentration in tuning the TiO2 properties in terms of structural, morphological, porosity, optical and electrochemical properties. The Cu-free TiO2 photoanode is rutile in structure whereas when Cu-doping level is increased, beyond 0.003 M, is transformed to mixed rutile-anatase structure. Presence of copper (Cu) in different weight percentages was confirmed from the surface energy dispersive X-ray analysis. Effect of Cu-doping on the power conversion efficiency of TiO2-based dye-sensitized solar cells is investigated. At 0.005 M Cu-doping level, both power conversion and incident-photon-to-current-conversion efficiencies of TiO2 electrode are optimal i.e. 3.32% and 46% respectively; consistent to electron life time measurement where with increase in Cu-doping level from 0.001 to 0.005 M an electron life time of TiO2 photoanode is increased from 0.1893 ms to 0.5967 ms.
ISSN:0925-8388
1873-4669