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PHOTOLUMINESCENCE PROPERTY OF TRANSPARENT SILICA GLASS PREPARED FROM NANOMETER-SIZED SILICA PARTICLES

T. Yamada1, T. Uchino2,*

Affiliation

  1. Department of Chemistry, Graduate School of Science and Technology, Kobe University, Nada-ku, Kobe 657-8501, Japan
  2. Department of Chemistry, Faculty of Science, Kobe University, Nada-ku, Kobe 657-8501, Japan, and SORST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

Abstract

The time-resolved photoluminescence (PL) decays are measured for transparent amorphous silica prepared from solid-phase sintering of nanometer-sized silica particles, which has recently been shown to exhibit a unique white PL emission under ultraviolet excitation [T. Uchino and T. Yamada, Appl. Phys. Lett. 85, 1164 (2004)]. Unlike usual PL processes observed in normal silica glass, it is shown that the present PL results from trapping controlled migration of photoexcited carriers and their radiative recombination..

Keywords

Silico glass, Photoluminescence, Nanometer particles.

Submitted at: July 4, 2004
Accepted at: July 21, 2005

Citation

T. Yamada, T. Uchino, PHOTOLUMINESCENCE PROPERTY OF TRANSPARENT SILICA GLASS PREPARED FROM NANOMETER-SIZED SILICA PARTICLES, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 4, pp. 1935-1940 (2005)