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학술지 Compositional Dependence of Se2- Color Center Formation in Silicate Glasses
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저자
최전, 박봉제, 최용규, 허종, 정운진
발행일
201310
출처
Journal of Non-Crystalline Solids, v.377, pp.70-73
ISSN
0022-3093
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.jnoncrysol.2012.12.016
협약과제
12VF1300, 야간투시카메라용 적외선광학렌즈 칼코지나이드유리 소재 개발, 박봉제
초록
We experimentally verified, within silicate glasses, the formation of Se2- color centers that are responsible for a broad visible emission under optical excitation at UV wavelengths. In addition to Raman spectra, all the spectroscopic analyses on absorption, photoluminescence, and photoluminescence excitation unanimously confirm the formation of Se 2- color centers. However, the visible absorption due to Se2- color centers disppeared upon increasing concentration of Na2O, which implies that their formation would depend on the compositions of silicate glasses. The role of Na2O in the formation mechanism in relation to glass structure is then discussed in terms of various analyses on X-ray diffraction patterns, X-ray photoelectron spectroscopy, and Raman spectroscopy. © 2012 Elsevier B.V. All rights reserved.
키워드
Color centers, Glasses, Luminescence, Se, Silicate
KSP 제안 키워드
Compositional dependence, Formation Mechanism, Glass structure, Photoluminescence excitation, Raman spectra, Raman spectroscopy, Silicate glasses, Spectroscopic analyses, UV wavelengths, Visible absorption, X-ray Photoelectron Spectroscopy