Transparent nanotube array

Fig. 5.16 The key stages in fabrication of a transparent Ti02 nanotube array film (top) Sputter deposition of a high quality Ti thin film (middle) anodization of resulting film, and (bottom) heat treatment to oxidize remaining metallic islands.

The transmittance spectrum of a titania nanotube-film (transparent) on glass is shown in Fig. 5.33. The optical behavior of the Ti02 nanotube-arrays is quite similar to that reported for mesostructured titanium dioxide [133], The difference in the envelope-magnitude encompassing the interference fringe maxima and minima is relatively small compared to that observed in titania films deposited by rf sputtering, e-beam and sol-gel methods [134],... 

Mor GK, Varghese OK, Paulose M, Grimes CA (2005) Transparent highly-ordered Ti02 nanotube-arrays via anodization of titanium thin films. Adv Funct Mater 15 1291-1296... 

Figure 9 (a) Schematic layout of a DSSC device based on a transparent titanium dioxide nanotube array covered with organic dye... 

Figure 3.33 Appearance of the TiOi nanotube-array film at key stages in the fabrication process (a) as-deposited Ti film (b) film after anodisation and (c) transparent film after heat treatment to crystallise the tubes and oxidise the remaining metallic islands. Reprinted from Mor et al., 2006 . Copyright (2006) American Chemical Society...

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