Energy levels and photoluminescence properties of nickel-doped bismuth ferrite

Dillip K. Mishra, Xiaoding Qi

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

Ni-doped BiFeO3 (BFO) films have been prepared using sol-gel method. Photoluminescence and optical absorption measurements were carried out for the grown films and observed four emissions at 451 nm, 468 nm, 513 nm and 689 nm. The band gap of the Ni-doped BFO was calculated from the absorption data to be 2.75 eV. The spectroscopic data were analyzed in conjunction with the results of conductivity vs. temperature measurements, which showed three different kinds of activation energies related to the defect and dopant levels inside the band gap. The observed emissions were attributed to the transitions from the oxygen vacancy, Bi2+ and Ni3+ levels, as well as the intrinsic band-to-band transition.

Original languageEnglish
Pages (from-to)27-31
Number of pages5
JournalJournal of Alloys and Compounds
Volume504
Issue number1
DOIs
Publication statusPublished - 2010 Aug 31

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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