Ion Implantation and Annealing for an Efficient N-Doping of TiO2 Nanotubes
Nano Letters2006Vol. 6(5), pp. 1080–1082
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Andrei Ghicov, Jan M. Macák, Hiroaki Tsuchiya, Julia Kunze‐Liebhäuser, Volker Haeublein, L. Frey, Patrik Schmuki
Abstract
Self-organized anodic titania nanotube layers were doped with nitrogen successfully using ion implantation. Photoelectrochemical measurements combined with XRD measurements show that the damage created by ion bombardment (that leads to a drastic decrease of the photoconversion efficiency) can be “annealed out” by an adequate heat treatment. This results in a N-doped crystalline anatase nanotube structure with strongly enhanced photocurrent response in both the UV and the visible range.
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