Manufacture Of Dye Sensitized Solar Cell Based On Titania Nanomaterials

With the advancement of world economy and technology, more and more energy is being consumed by mankind. Of all the available technologies producing renewable energy, photovoltaic techniques are a hot topic of research. The solar energy, an inexhaustible green energy, is one of the optimal ways to resolve energy crisis.Currently, dye-sensitized nano-crystalline solar cell (DSSC) is one of popular research realm in the fields of nanotechnology and photoelectric conversion material, and it has broad prospects due to its low cost and high efficiency.In recent years, electrospinning technology has been proved to be one of the effective methods to prepare inorganic oxides low-dimensional nonmaterial owing to its high efficiency, simple operation and so on. Nano-TiO2 particles, a prospective photocatalytic material, have expensive applications in areas such as environmental protection, solar energy conversion and industrial catalysts.In this dissertation, sol-gel method was applied to prepare the precursor solution with certain viscosity, and electrospinning technique was used to fabricate PVP/[Ti(SO4)2+ (NH2)2CO] composite nanofibers, nanobelts and nanotubes, PVP/[Ti(SO4)2+AgNO3] composite nanofibers, nanobelts and nanotubes, PVP/[Ti(SO4)2+(NH2)2CO+AgNO3] composite nanofibers, nanobelts and nanotubes, PVP/Ti(OC4H9)4 nanofibers.The prepared TiO2 nanofibers were employed as the thin film materials in assembling solar cells, N3 was used as sensitizers to sensitize the film and I3-/I- solution was used as electrolyte.The samples were systematically characterized by XRD, FTIR, SEM, et al. The average of diameter:N doped TiO2 nanofibers were 150～165 nm, nanotubes were 900-1200 nm. Widths of nanobelts were 5000-8000 nm and the thickness was 600 nm. Ag doped TiO2 nanofibers were 97～112 nm, nanotubes were 1700～2000 nm. Widths of nanobelts were 5000-7000 nm and the thickness was 600 nm. N, Ag doped TiO2 nanofibers were 110～150 nm. nanotubes were 1130～1270 nm. Widths of nanobelts were 6000～7200 nm and the thickness was 600 nm.