英文论文
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文献类型
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Journal article (JA)
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题名
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Efficient Sr0.5 Ca0.5 AlSiN3:Eu2+red-emitting ceramics for high-power solid-state lighting
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作者
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Tian, Rundong; Wang, Qihao; Li, Shuxing; Zhou, Tianliang; Xie, Rong-Jun
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作者单位
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[Tian, Rundong; Wang, Qihao; Li, Shuxing; Zhou, Tianliang; Xie, Rong-Jun] Xiamen Univ, Coll Mat, Fujian Prov Key Lab Surface & Interface Engn High, Xiamen 361005, Peoples R China. [Xie, Rong-Jun] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China.
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通讯作者地址
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Xiamen Univ, Coll Mat, Fujian Prov Key Lab Surface & Interface Engn High, Xiamen 361005, Peoples R China.; Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China.
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Email
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lishuxing@xmu.edu.cn; rjxie@xmu.edu.cn
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ResearchID
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ORCID
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期刊名称
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Journal of Materials Science and Technology
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出版社
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JOURNAL MATER SCI TECHNOL
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ISSN
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1005-0302
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出版信息
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2025-03-01, 210 ():179-187.
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JCR
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影响因子
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ISBN
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基金
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National Key Research and Development Program (MOST) [2022YFE0108800]; National Natural Science Foundation of China [52272165, U2005213, 52172157]; Major Science and Technology Projects of Xiamen Science and Technology Bureau [3502Z20231018]
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会议名称
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会议地点
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会议开始日期
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会议结束日期
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关键词
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Additives; Aluminum compounds; Ball milling; Calcium compounds; Conversion efficiency; Excited states; Fabrication; Light emission; Light emitting diodes; Luminance; Particle size; Phosphors; Powders; Spark plasma sintering
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摘要
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Solid-state lighting is now developing toward high-power and super-brightness, but is largely limited by the lack of highly robust and efficient color conversion materials that can be survived from high-power or high-power density excitation, typically the red-emitting ones. In this work, we fabricated highly efficient and pore-free Sr0.5 Ca0.5 AlSiN3 :Eu2 + (SCASN) red-emitting ceramics by spark plasma sintering of fine phosphor powders. These fine phosphor powders were prepared by treating the commercial phosphors with high-energy ball-milling, centrifugation and acid washing, leading to a particle size of 2.55 mu m and an internal quantum efficiency as high as 74.0% under 450 nm excitation. The phosphor powders can be densified into SCASN ceramics without using sintering additives at a temperature as low as 1475 degrees C, and the ceramics show an internal quantum efficiency of 75.3%, which is 50% higher than those ceramics fabricated with untreated commercial powders. When excited by a high-power blue LED at a current density of 4 A/mm2 , the SCASN ceramics have a maximum luminous flux of 660 lm (i.e., 26 Mcd/m2 ). The phosphor ceramics can also withstand a high laser power density of 15.7 W/mm2 , and exhibit an output luminance of 188 Mcd/m2 . This work provides a general method to prepare fine phosphor powders that enable to fabricate high efficiency phosphor ceramics used in high-power solid-state lighting. (c) 2024 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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一级学科
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Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
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WOS入藏号
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WOS:001259256400001
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EI收录号
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20242516284521
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DOI
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10.1016/j.jmst.2024.04.079
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ESI
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收录于
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SCIE, EI
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