Erbium-silicon-oxide nano-crystallite waveguide formation based on nano-porous silicon

T. Kimura, K. Ueda, R. Saito, K. Masaki, H. Isshiki

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A new method is shown of the formation of a waveguide structure composed of erbium-silicon-oxide (Er-Si-O) nano-crystallites based on nano-porous silicon. A porous silicon (PS) double layered (core and clad) waveguide structure with a cross-section of semicircular shape was first formed by spatially selective anodic etching of an n-Si wafer in the dark. The core and clad PS layers consist is of different nanometer pore sizes. Next, Er ions were incorporated into pores by immersing the PS layers in an erbium-chloride/ethanol solution for 24 h. After drying, a two-step annealing was carried out to convert the Er-incorporated PS layers into Er-Si-O crystallites. The resulting samples showed a finely structured photoluminescence spectrum due to the 4f-4f inner shell transition of Er3+ ions at room temperature which was characteristic of Er-Si-O crystallites.

Original languageEnglish
Pages (from-to)880-883
Number of pages4
JournalOptical Materials
Issue number5
Publication statusPublished - 2005 Feb
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering


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