Deskins, N Aaron
The goal of this study was to create graphene-TiO2 composite materials in order to make solar cell applications more efficient. Graphene provides unparalleled electron mobility which improves both charge transfer and can help resist electron-hole recombination, which is a factor in the low efficiency of solar cells. TiO2 is already a prominent photocatalyst with the capability to absorb a wide spectrum of solar radiation. By producing a stable graphene-TiO2 composite, the photocatalytic properties of TiO2 can be enhanced. The primary design constraint in this study is the band gap of TiO2. I have found that defect graphene sheets anchor TiO2 nanoclusters onto the graphene surface allowing charge transfer within the composite and improve the spectrum of light which can be absorbed.
Worcester Polytechnic Institute
Major Qualifying Project
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