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Compositional Dependence of Phase Separation and Photoluminescence in Er‐Doped Alkaline Borosilicate Glasses
Author(s) -
Chiang ChihChun,
Shyu JiinJyh
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03262.x
Subject(s) - borosilicate glass , photoluminescence , materials science , alkali metal , microstructure , doping , analytical chemistry (journal) , phase (matter) , absorption (acoustics) , quenching (fluorescence) , mineralogy , optics , chemistry , fluorescence , metallurgy , composite material , optoelectronics , chromatography , physics , organic chemistry
Er 3+ ‐doped materials have attracted great attention. In this study, the effects of the kind of alkali (Li, Na, and K), Er 2 O 3 concentration (up to 3 mol%), and P 2 O 5 addition (0 and 2 mol%) on the phase separation, optical absorption, and photoluminescence (PL) of the alkali borosilicate glasses were investigated. The relationship between microstructure and optical properties of the glasses is discussed. It was found that the development of the droplet phase enhances both the light‐scattering effect (enhancing the PL intensity) and the concentration‐quenching effect (reducing the PL intensity). As a result, the variation of the PL intensity of the Er 3+ 4 I 13/2 → 4 I 15/2 transition with Er 2 O 3 content is mainly caused by the conflict between the light‐scattering effect and the concentration‐quenching effect. The 1 mol% Er 2 O 3 ‐doped, P 2 O 5 ‐containing, sodium borosilicate glass has the optimum microstructure and thus the highest PL intensity.