The electronic structure and optical properties of rutile TiO2 co-doped with nickel and cerium

R. Amraoui, M. Doghmane, S. Chettibi, Debra Laefer

Research output: Contribution to journalArticle

Abstract

This paper used the first-principle calculations based on the density functional theory (DFT) to determine the electronic structure and optical absorption of rutile TiO2 co-doped with nickel (Ni) as a transition metal and cerium (Ce) as a rare earth metal. The calculated results demonstrated that the nickel and cerium TiO2 co-doping induced impurity energy levels above the valence band maximum (VBM) which reduced the required electron transition energy and limit the recombination rate of charge carriers, as well as prolonging their life span. Likewise, the optical spectra of TiO2 co-doped with nickel and cerium revealed a larger photo-response for visible light than that of nickel or cerium, single doped TiO2.

Original languageEnglish (US)
Pages (from-to)2393-2399
Number of pages7
JournalChinese Journal of Physics
Volume55
Issue number6
DOIs
StatePublished - Dec 1 2017

Fingerprint

cerium
rutile
nickel
electronic structure
optical properties
life span
electron transitions
optical spectrum
charge carriers
optical absorption
rare earth elements
energy levels
transition metals
density functional theory
valence
impurities
metals
energy

Keywords

  • DFT
  • Ni-Ce co-doping
  • Rutile TiO

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

The electronic structure and optical properties of rutile TiO2 co-doped with nickel and cerium. / Amraoui, R.; Doghmane, M.; Chettibi, S.; Laefer, Debra.

In: Chinese Journal of Physics, Vol. 55, No. 6, 01.12.2017, p. 2393-2399.

Research output: Contribution to journalArticle

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