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Ln_(2)O_(3)(Ln=Er^(3+),Sm^(3+))稀土氧化物的高效上转换宽带发光性能研究

THE EFFICIENT UPCONVERSION BROADBAND LUMINESCENCE PERFORMANCE STUDY OF Ln_(2)O_(3)(LN=Er^(3+),Sm^(3+))RARE EARTH OXIDES
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摘要 通过简单的共沉淀法成功制备了Ln_(2)O_(3)(Ln=Er^(3+),Sm^(3+))纳米发光材料,通过光子雪崩过程实现了Ln_(2)O_(3)(Ln=Er^(3+),Sm^(3+))纳米发光材料的高效上转换宽带发光。通过光谱测试发现在1.47 W功率密度的980 nm光源激发下,所制备的上转换发光材料Er_(2)O_(3) 和Sm_(2)O_(3)的发光强度分别是商用NaYF_(4):Yb^(3+),Er^(3+)荧光粉的4.13倍和2.45倍,经过认真分析材料的上转换发光机制,发现材料的宽带发光主要来源于Ln_(2)O_(3)(Ln=Er^(3+),Sm^(3+))基质中的氧缺陷。 Ln_(2)O_(3)(Ln=Er^(3+),Sm^(3+))nanoparticles(NPs)were successfully prepared through a simple co-precipitation method.The highly efficient upconversion(UC)broad band emission in Ln_(2)O_(3)(Ln=Er^(3+),Sm^(3+))NPs is realized through the photon avalanche process.The emission intensity of Er_(2)O_(3) and Sm_(2)O_(3) is~4.13 folds and~2.45 folds than commercial NaYF_(4):Yb^(3+),Er^(3+)phosphor at 1.47 W power density of 980 nm excitation light source,respectively.The broad band emissions are mainly originated from the oxygen defect in Ln_(2)O_(3)(Ln=Er^(3+),Sm^(3+))host by carefully discussing the detail UCL mechanism.
作者 崔少博 秦佳琼 王运锋 CUI Shao-bo;QIN Jia-qiong;WANG Yun-feng(School of Information Engineering,Nanyang Institute of Technology,Nanyang 473000,China)
出处 《南阳理工学院学报》 2022年第2期110-114,共5页 Journal of Nanyang Institute of Technology
基金 国家自然科学基金重点项目(11704202) 河南省科技攻关项目(202102210018) 河南省高等学校重点科研项目(18A140025) 河南省高等学校青年骨干教师培养计划项目(2021GGJS152)。
关键词 稀土发光 光子雪崩 上转换宽带 氧缺陷 rare earth luminescence photon avalanches upconversion broadband oxygen vacancy

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