Self-Organized One-DimensionalTiO2Nanotube/Nanowire Array Films for Use in Excitonic Solar Cells: A Review

Abstract

We review the use of self-assembled, vertically oriented one-dimensional (1D) titania nanowire and nanotube geometries in several third-generation excitonic solar cell designs including those based upon bulk heterojunction, ordered heterojunction, Förster resonance energy transfer (FRET), and liquid-junction dye-sensitized solar cells (DSSCs).

Generation of fuel from CO2 saturated liquids using a p-Si nanowire ‖ n-TiO2 nanotube array photoelectrochemical cell

“…Prior efforts have demonstrated the potential benefits of utilizing 1-D architectures for photovoltaics. 37,38 Moreover, the large effective surface areas of the nanowire and nanotube films provide a maximum number of oxidation and reduction sites. Further optimization of catalyst particle size, spacing, density and uniformity may improve the hydrocarbon yield, and enhance our understanding of the product selectivity and underlying reaction mechanisms.…”

An Overview Of Nanonet Based Dye-Sensitized Solar Cell (DSSC) In Solar Cloth

“…12. Depiction of energy level positions and charge transfer processes of the constituent layers of the described hybrid solar cell [51].…”

“…There are several methods allow growth of nanowires nearly vertically from the substrate [45] such synthesis TiO 2 nanowire films arrays can be achieved via a hydrothermal process [51]. According to [51], the synthesis process for the fabrication of highly aligned, vertically oriented, densely packed, and highly crystalline nanowire arrays on FTO-coated glass was performed by treating the FTO glass with 0.2M TiCl 4 aqueous solution for 12 h and subsequently heating in air at 500⁰C for 30 min placed within a sealed Teflon reactor containing 10mL of toluene, 1mL of tetrabutyl titanate, 1mL of 1.0M titanium tetrachloride (in toluene), and 1mLof hydrochloric acid (37wt%). With an increase in temperature, Ti4+ precursors hydrolyze with water at the water/TiO 2 or FTO interface, resulting in the formation of a crystal nucleus on the substrate.…”

“…The conduction band position of TiO2 is just below the LUMO energy level of PCBM, resulting in efficient extraction of electrons from the PCBM. The nanowires architecture enhances the interfacial contact area between TiO 2 and P3HT and/or PCBM of the active blend layer, which implies a higher electron collecting surface area [51].…”

Advanced titanium dioxide fluidizable nanowire photocatalysts

“…One-dimensional nanostructured TiO 2 films have been synthesized via a number of methods, 12,23,24 however, hydrothermal growth has proven to be of the most facile and popular methods. 25–35 Recent studies have investigated the synthetic parameters in hydrothermal growth of nanostructured TiO 2 films in detail.…”