Characterization of photoluminescence of β-FeSi2 thin film fabricated on Si and SIMOX substrate by IBSD method

Kenichiro Shimura, Kenji Yamaguchi, Masato Sasase, Hiroyuki Yamamoto, Shin ichi Shamoto, Kiichi Hojou

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Fe is deposited on a single crystal bulk Si (1 0 0) and separated by implanted oxygen (SIMOX) substrate by the use of ion beam sputter deposition (IBSD) method to form β-FeSi2 film. Photoluminescence (PL) is measured for these films, after the films on Si substrate are thermally annealed at 1153 K for 24 h. The PL intensity at around 0.83 eV dramatically increased. Such feature has not been seen on SIMOX substrate. To understand how the structural and compositional properties of the film and the substrate affect the PL characteristics, cross-sectional transmission electron microscopy (XTEM) has been applied. The results revealed that these films have quite different structures after thermal annealing due to aggregation of the film. In the bulk Si case, β-FeSi2 has a particle size of about 200 nm, whereas on SIMOX, it has particle sizes of about 20-30 nm on insulator. Moreover, β-FeSi2/Si interface remains in the former but not in the latter case. It is revealed that these structural properties are important for enhancement of PL intensity.

Original languageEnglish
Pages (from-to)719-722
Number of pages4
Issue number7 SPEC. ISS.
Publication statusPublished - 2006 May 31

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films


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