Influence of Nitrogen Doping on the Defect Formation and Surface Properties of TiO 2 Rutile and Anatase

作者: Matthias Batzill , Erie H. Morales , Ulrike Diebold

DOI: 10.1103/PHYSREVLETT.96.026103

关键词:

摘要: Nitrogen doping-induced changes in the electronic properties, defect formation, and surface structure of TiO 2 rutile (110) and anatase (101) single crystals were investigated. No band gap narrowing is observed, but N doping induces localized N 2 p states within the band gap just above the valence band. N is present in a N (III) valence state, which facilitates the formation of oxygen vacancies and Ti 3 d band gap states at elevated temperatures. The increased O vacancy formation triggers the 1× 2 reconstruction of the rutile (110) surface …

参考文章(19)
Jung-Yup Lee, Jaewon Park, Jun-Hyung Cho, Electronic properties of N- and C-doped TiO2 Applied Physics Letters. ,vol. 87, pp. 011904- ,(2005) , 10.1063/1.1991982
John E. Jaffe, Timothy C. Droubay, Scott A. Chambers, Oxygen vacancies and ferromagnetism in CoxTi1−xO2−x−y Journal of Applied Physics. ,vol. 97, pp. 073908- ,(2005) , 10.1063/1.1868056
Brian O'Regan, Michael Grätzel, A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films Nature. ,vol. 353, pp. 737- 740 ,(1991) , 10.1038/353737A0
Michael A. Henderson, J. Michael White, Hiroshi Uetsuka, Hiroshi Onishi, Photochemical charge transfer and trapping at the interface between an organic adlayer and an oxide semiconductor. Journal of the American Chemical Society. ,vol. 125, pp. 14974- 14975 ,(2003) , 10.1021/JA037764+
Ulrike Diebold, The surface science of titanium dioxide Surface Science Reports. ,vol. 48, pp. 53- 229 ,(2003) , 10.1016/S0167-5729(02)00100-0
F. Esaka, K. Furuya, H. Shimada, M. Imamura, N. Matsubayashi, H. Sato, A. Nishijima, A. Kawana, H. Ichimura, T. Kikuchi, Comparison of surface oxidation of titanium nitride and chromium nitride films studied by x-ray absorption and photoelectron spectroscopy Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. ,vol. 15, pp. 2521- 2528 ,(1997) , 10.1116/1.580764
Jesper Nerlov, Qingfeng Ge, Preben J. Møller, Resonant photoemission from TiO2(110) surfaces: implications on surface bonding and hybridization Surface Science. ,vol. 348, pp. 28- 38 ,(1996) , 10.1016/0039-6028(95)00990-6
Cristiana Di Valentin, Gianfranco Pacchioni, Annabella Selloni, Stefano Livraghi, Elio Giamello, Characterization of paramagnetic species in N-doped TiO2 powders by EPR spectroscopy and DFT calculations. Journal of Physical Chemistry B. ,vol. 109, pp. 11414- 11419 ,(2005) , 10.1021/JP051756T
Cristiana Di Valentin, Gianfranco Pacchioni, Annabella Selloni, Origin of the different photoactivity of N -doped anatase and rutile TiO 2 Physical Review B. ,vol. 70, pp. 085116- ,(2004) , 10.1103/PHYSREVB.70.085116
Yoshitaka Nakano, Takeshi Morikawa, Takeshi Ohwaki, Yasunori Taga, Deep-level optical spectroscopy investigation of N-doped TiO2 films Applied Physics Letters. ,vol. 86, pp. 132104- ,(2005) , 10.1063/1.1896450