Dependence of the luminescence properties of submicron silica particles on manufacturing conditions

Akira Harao, Seiichiro Inai, Hiroaki Sato, Hiroyuki Nishikawa

Research output: Contribution to conferencePaper

Abstract

We investigated luminescence properties of submicron-sized silica particles prepared by Stöber method under different conditions. After annealing in a non-oxidizing atmosphere, the submicron-sized silica particles show a broad photoluminescence (PL) band at 500 nm ranging from visible to ultraviolet wavelength by excitation at 250 nm, and the one at 600 nm by excitation at 488 nm. The particle diameters were controlled by the ethanol contents or temperatures during synthesis. With decreasing particle diameters, the PL band appears by shorter annealing time. The PL was enhanced by the removal of impurities and subsequent formation of luminescent structures by the thermal annealing.

Original languageEnglish
Pages672-675
Number of pages4
Publication statusPublished - 2005 Oct 7
Event2005 International Symposium on Electrical Insulating Materials, ISEIM 2005 - Kitakyushu, Japan
Duration: 2005 Jun 52005 Jun 9

Conference

Conference2005 International Symposium on Electrical Insulating Materials, ISEIM 2005
CountryJapan
CityKitakyushu
Period05/6/505/6/9

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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  • Cite this

    Harao, A., Inai, S., Sato, H., & Nishikawa, H. (2005). Dependence of the luminescence properties of submicron silica particles on manufacturing conditions. 672-675. Paper presented at 2005 International Symposium on Electrical Insulating Materials, ISEIM 2005, Kitakyushu, Japan.