Photoluminescence properties of β-FeSi 2 on Cu- or Au-coated Si

Kensuke Akiyama, Satoru Kaneko, Takeshi Ozawa, Kazuya Yokomizo, Masaru Itakura

Research output: Contribution to journalArticlepeer-review


The photoluminescence (PL) at 1.55 μm from semiconducting β-FeSi 2 has attracted a noticeable interest for silicon-based optoelectronic applications. Moreover, its high optical absorption coefficient (higher than 10 5cm -1 above 1.0 eV) allows this semiconducting material to be used as photovoltanics devices. A clear PL spectrum for β-FeSi 2 was observed by Cu or Au coating on Si(001). High-crystal-quality β-FeSi 2 with a low-level nonradiative center was formed on a Cu- or Au- reated Si layer. This method of deposition can be applied to other materials requiring high crystal quality.

Original languageEnglish
Pages (from-to)382-384
Number of pages3
JournalWorld Academy of Science, Engineering and Technology
Publication statusPublished - Feb 2011

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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