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Citation: Chen Kun-Yao, Lin Zhong-Hua. The Implantation of Light-Induced CoIONS into Ti Anodic Oxide Film[J]. Acta Physico-Chimica Sinica, ;1992, 8(03): 326-331. doi: 10.3866/PKU.WHXB19920309 shu

The Implantation of Light-Induced CoIONS into Ti Anodic Oxide Film

1.
Department of Chemistry, Xiamen University, Xiamen 361005

Received Date: 10 January 1991
Available Online: 15 June 1992

Implantation of light-induced Co ions from Co(NO_3)_2 solution (≥0. 10 mol·cm~(-3)) into Ti anodic oxide film was observed and studied by photocurrent spectroscopy and XPS technique. The results show that implantation could not take place at film/solution interface without illumination. But the Co ions at film/solution interface excited by illuminating can overcome the interface barrier and the TiO_2 lattice energy and into the tetrahedral interstitial sites and/or octahedral interstitial sites in TiO_2 lattice. The implanted Co ions can interact with the O~(2-) ions in the lattice and probably form tetracoordinated compound of Co with typical blue color and hexacoordinated compound of Co with typical pink color. The quantum efficiency for photoelectric conversion of Ti anodic film decreases with very high doping concentration of Co ions.
- Implantation of Co ions; Light-induced; Ti anodic oxide film
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