A blue luminescence glass-ceramics of Eu2+ ions activated Li2O-BaO-B2O3
来源期刊：JOURNAL OF RARE EARTHS2008年第2期
论文作者：HUANG Yanlin Ho Sueb Lee JIANG Chuanfang Kiwan Jang Eunjin Cho WANG Xigang QIN Dake
Key words：glass-ceramics; europium; optical materials; luminescence; rare earths;
Abstract: New blue luminescence glass-ceramic samples were prepared in air by annealing of the Eu3+-doped Li2O-BaO-B2O3 glass. The as-made glass samples only showed the sharp emission peaks assigned to the transitions of 5D0-7FJ (J=0, 1, 2, 3, 4) of Eu3+ ions. The glass-ceramic samples gave a strong and broad emission band peaking at about 382 nm ascribed to the 5d-4f transition of Eu2+ ions. The optical properties such as excitation and emission spectra, and the decay time of the Eu2+ ions were investigated in the glasses or the glass-ceramics samples. The X-ray diffraction pattern showed that LiBaB9O15 might be demonstrated to be the crystallites in the glass-ceramic, which contributed to the blue luminescence. SEM micrograph was investigated on the glass-ceramic samples obtained by crystallization of the glass matrix resulting in a mixture of poly-crystals.
HUANG Yanlin1，Ho Sueb Lee2，JIANG Chuanfang1，Kiwan Jang2，Eunjin Cho2，WANG Xigang1，QIN Dake1
(1.School of Material Engineering, Soochow University, Suzhou 215021, China;
2.Department of Physics, Changwon National University, Changwon, 641-773, Republic of Korea)
Abstract:New blue luminescence glass-ceramic samples were prepared in air by annealing of the Eu3+-doped Li2O-BaO-B2O3 glass. The as-made glass samples only showed the sharp emission peaks assigned to the transitions of 5D0-7FJ (J=0, 1, 2, 3, 4) of Eu3+ ions. The glass-ceramic samples gave a strong and broad emission band peaking at about 382 nm ascribed to the 5d-4f transition of Eu2+ ions. The optical properties such as excitation and emission spectra, and the decay time of the Eu2+ ions were investigated in the glasses or the glass-ceramics samples. The X-ray diffraction pattern showed that LiBaB9O15 might be demonstrated to be the crystallites in the glass-ceramic, which contributed to the blue luminescence. SEM micrograph was investigated on the glass-ceramic samples obtained by crystallization of the glass matrix resulting in a mixture of poly-crystals.
Key words:glass-ceramics; europium; optical materials; luminescence; rare earths;
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