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Due to rapid progressive research in the field of nano-technology, nanostructures are attaining tremendous deliberation. Precisely, among these, nano-fibers have accumulated unprecedented attention over the last few years owing to their superior properties such as large surface area to volume ratio. For advance generation solar cells, nano-fibers ofmetal oxides such as TiO2 have beenwidely employed as aworking anode but due to the disadvantages of recombination of electrons, their couplingwith othermetal oxides is necessary to render themuseful. This work reports the successful fabrication of TiO2 , TiO2/SnO2 nano-fibers based film and study of the effect of polymer concentration upon it. The crystal structure of synthesized fibers was investigated using XRD, the morphology and chemical compositionwas analyzed using SEMandEDX, optical properties and chemical properties were studied usingUV-VIS spectrophotometer and FT-IRwhile the electrical properties were studied usingHall Effectmeasurement system. It was revealed that the prepared TiO2-SnO2 nano-fibers exhibit enhanced conductivity, larger band-gapwith enhanced photo voltaic properties thanTiO2 nano-fibers. The prepared TiO2/SnO2 nano-fibers based solar cells provide an improved efficiency of 4.81% as compared to 1.8% efficiency of bare TiO2 nano-fibers.

materials research express

Synthesis and characterization of electro-spun TiO2and TiO2-SnO2composite nano-fibers for application in advance generation solar cells