Dye sensitized solar cells using freestanding TiO2 nanotube arrays on FTO substrate as photoanode

Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye

“…One approach to enhance its photocatalytic performance is nanostructuring of TiO 2 , which provides high specific surface areas and an increased number of photoactive sites [7,8] . The widely used anodization technique for obtaining highly ordered TiO 2 nanotubes (NTs) [9] is superior to other methods, since it provides self-organization of the NTs that are perpendicular to the substrate which makes the exploitation of the material's high specific surface enhanced [10]. Other explored methods for synthesis of TiO 2 NTs, such as hydrothermal or solvothermal [11], result in a random orientation on the substrate.…”

Deposition of transparent TiO2 nanotubes-films via electrophoretic technique for photovoltaic applications

“…Therefore, TiO 2 nanotube-film electrodes have been widely utilized in various applications including lithium ion battery [5], photocatalysts [6], solar cells [7], hydrogen sorption [8] and biomedical materials [9]. Recently, TiO 2 nanotubes have been widely applied in dye-sensitized solar cells (DSSCs) to overcome the drawback of carrier recombination by providing short and direct pathways for electron transport and collection [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. For instance, Varghese et al [10] used long vertically aligned TiO 2 nanotube arrays to greatly improve the efficiency of DSSCs; Zhong et al [11] observed TiO 2 nanotube photoanode owned a longer electron diffusion length and a larger electron lifetime than the nanoparticle one in DSSCs.…”

Effect of Sn doping on the structural, optical and electrical properties of TiO2 films prepared by spray pyrolysis

“…Among these materials, at present TiO 2 based applications such as sensors, solar cells, LEDs have been widely used because of their inert surface properties and high sensing abilities, long-time stability [2][3][4][5]. An introduction of small amount of impurities into TiO 2 induces a change in its structural, electrical and optical properties.…”