FENG Huajie, SUN Zhenfan, CHEN Liuping, et al. Study of the Iron Concentration Influence on Fe-Doped TiO2 by First-Principles Calculation Theory[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2013,52(2):74-78.
FENG Huajie, SUN Zhenfan, CHEN Liuping, et al. Study of the Iron Concentration Influence on Fe-Doped TiO2 by First-Principles Calculation Theory[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2013,52(2):74-78.DOI:
density of states and optical absorption spectra of Fe-Doped TiO
2
with different concentrations were studied by first-principles calculation theory. The results showed that the increase of Fe-doped concentration leaded to an increase in impurity level. The peak of density of states appeared near fermi level and the peak value increased with increasing concentration of Fe
resulting in increasing the probability of electronic transition from impurity level to conduction band
and improving the rate of absorption of visible light. Furthermore
there was an optimal concentration corresponding to the high value of response of visible light in their absorption spectra.
关键词
二氧化钛电子结构不同浓度掺杂第一性原理杂质能级
Keywords
titanium dioxideelectronic structuredoped with different concentrationsfirst-principlesimpurity level