Journal of the Chinese Ceramic Society, Volume. 50, Issue 12, 3126(2022)
Sulfur Element Doped Ultra-Narrow Band Zero-Thermal-Quenching Blue Emission Phosphors: RbNa3(Li12Si4O16-ySy):Eu2+
Sulfur element doped RbNa3(Li12Si4O16-ySy):Eu2+ narrow-band blue emitting UCr4C4 phosphors were synthesized by a conventional high-temperature solid-state method. The zero-thermal-quenching performance for the UCr4C4 structure was obtained, i.e., the integrated emission intensity at 250 ℃ increases to 107% rather than that at room temperature. The sites occupation of Eu2+ ions and defect analysis reveal the corresponding luminescence adjustment and zero-thermal-quenching mechanism. Also, the cationic substitution strategy of Ti4+ for Si4+ is designed eliminate the shoulder band peak located at 525 nm for RbNa3(Li12Si4O16-ySy):Eu2+phosphors, and the color purityofblue eto mission is improved from 61.1% to 83.7%. It is indicated that the as-prepared RbNa3(Li12Si3TiO16-ySy):Eu2+ phosphors could be used as a blue-emitting candidate material for liquid crystal display backlighting. This work can provide a guidance for the design of UCr4C4 phosphors to achieve the zero-thermal-quenching performance and high color purity.
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YANG Hang, WEI Yi, HUANG Qinwen, XU Wanqing, TAN Xiu, ZHANG Xinyang, WANG Zhennan, LI Guogang. Sulfur Element Doped Ultra-Narrow Band Zero-Thermal-Quenching Blue Emission Phosphors: RbNa3(Li12Si4O16-ySy):Eu2+[J]. Journal of the Chinese Ceramic Society, 2022, 50(12): 3126
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Received: Apr. 28, 2022
Accepted: --
Published Online: Jan. 20, 2023
The Author Email: Hang YANG (yanghang@cug.edu.cn)