Discovery of blue-emitting Eu2+-activated sodium aluminate phosphor with high thermal stability via phase segregation
文献类型：期刊论文
| 作者 | Zhang, Xujian; Zhang, Jilin; Wu, Xiangli; Yu, Liping; Liu, Yongfu; Xu, Xuhui; Lian, Shixun |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2020 |
| 卷号 | 388 |
| 关键词 | RED PHOSPHORS LUMINESCENCE PROPERTIES QUANTUM EFFICIENCY CRYSTAL-STRUCTURE PLANT-GROWTH EMISSION PHOTOLUMINESCENCE MN2+ CE3+ DESIGN |
| DOI | 10.1016/j.cej.2020.124289 |
| 英文摘要 | Thermally stable phosphors are crucial for the application in phosphor-converted white light-emitting diodes. This paper reports the evolution of phase compositions in nominal Na2-xAl2B2O7:xEu (x = 0.02-2.0) upon replacing Na atoms by Eu atoms. Eu2+-activated blue-emitting phosphor was discovered through phase segregation combined with related analyses. The structure, phase composition and related luminescent properties were investigated by X-ray powder diffraction, backscattered electron image combined with elemental mapping, cathodoluminescence-combined scanning electron microscope, and temperature-dependent emission spectra, etc. Analyses results suggest that EuBO3 phase segregates upon the gradual replacement of Na by Eu atoms, which is accompanied by phase transformation from Na2Al2B2O7:Eu2+ to NaAl11O17:Eu2+ and dramatic enhancement of blue emission. The broad emission band is peaking at around 470 nm under UV irradiation. The internal quantum efficiencies of nominal Na0.4Al2B2O7:1.6Eu and Na0.2Al(2)B(2)O(7):1.8Eu are 58.6% and 60.2%, respectively, which contain both NaAl11O17 and EuBO3 phase. The emission intensity for these two samples at 150 degrees C remains 96% (x = 1.6) and 83% (x = 1.8) of the room-temperature values, respectively. |
| 学科主题 | Engineering |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19607]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Zhang, JL (corresponding author), Hunan Normal Univ, Minist Educ China, Key Lab Sustainable Resources Proc, Key Lab Chem Biol & Tradit Chinese Med Res, Changsha 410081, Peoples R China. 2.Zhang, JL (corresponding author), Hunan Normal Univ, Adv Mat Hunan Prov Coll, Changsha 410081, Peoples R China. 3.Liu, YF (corresponding author), Chinese Acad Sci, NIMTE, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhang, Xujian,Zhang, Jilin,Wu, Xiangli,et al. Discovery of blue-emitting Eu2+-activated sodium aluminate phosphor with high thermal stability via phase segregation[J]. CHEMICAL ENGINEERING JOURNAL,2020,388. |
| APA | Zhang, Xujian.,Zhang, Jilin.,Wu, Xiangli.,Yu, Liping.,Liu, Yongfu.,...&Lian, Shixun.(2020).Discovery of blue-emitting Eu2+-activated sodium aluminate phosphor with high thermal stability via phase segregation.CHEMICAL ENGINEERING JOURNAL,388. |
| MLA | Zhang, Xujian,et al."Discovery of blue-emitting Eu2+-activated sodium aluminate phosphor with high thermal stability via phase segregation".CHEMICAL ENGINEERING JOURNAL 388(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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