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| Synthesis of Blue Phosphor Sr2-x-yB5O9Cl:xEu2+, yTb3+ and Luminescence Properties Under Ultraviolet Excitation |
| DOU Xihua, ZHAO Weiren, SONG Enhai, ZHOU Guoxiong, YI Chunyu, ZHOU Minkang |
| School of Physics & Optoelectronic Engineering, Guangdong University of Technology, Guangdong 510006 |
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Cite this article:
DOU Xihua ZHAO Weiren SONG Enhai ZHOU Guoxiong YI Chunyu ZHOU Minkang. Synthesis of Blue Phosphor Sr2-x-yB5O9Cl:xEu2+, yTb3+ and Luminescence Properties Under Ultraviolet Excitation. Chin J Mater Res, 2012, 26(1): 96-100.
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Abstract Sr2-x-yB5O9Cl:xEu2+, yTb3+ blue phosphors were synthesized by solid-state reaction method. The crystal structure was analyzed, and the factors affected the PL intensity of Sr2B5O9Cl phosphors were investigated. The optimal conditions to obtain the blue emitting phosphor are 8% (molar fraction) Eu2+ concentration, 8% Tb3+ concentration, 30% excess of flux H3BO3 and 900℃ reaction temperature; For single-doped Eu2+, the concentration quenching mechanism is electric dipole-electric dipole interaction mechanism and the concentration quenching critical distance is about RC=1.71 nm; Furthermost, there is a strong absorption in the region of 230–410 nm.
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Received: 04 July 2011
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| Fund: Supported by the Copperation Project in Industry, Education and Research of Guangdong Province and Ministry of Eduction of China No.2010B090400021. |
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