Photoluminescence decay dynamics of transparent silica glass prepared from nanometer-sized silica particles
Tomoko YamadaKobe University Department of Chemistry, Graduate School of Science and Technology, , Nada-ku, Kobe 657-8501, JapanTakashi UchinoKobe University Department of Chemistry, Faculty of Science, , Nada-ku, Kobe 657-8501, Japan and , Kawaguchi, Saitama 332-0012, Japan
2005en
ABI
Annotatsiya
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.
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