Ghicov, A.A.GhicovMacak, J.M.J.M.MacakTsuchiya, H.H.TsuchiyaKunze, J.J.KunzeHaeublein, V.V.HaeubleinFrey, L.L.FreySchmuki, P.P.Schmuki2022-03-032022-03-032006https://publica.fraunhofer.de/handle/publica/21167710.1021/nl0600979Self-organized anodic titaniananotube 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.en670620530journal article