化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (11) : 128-132. DOI: 10.19817/j.cnki.issn1006-3536.2023.11.023

新材料与新技术

白光LED用Eu³⁺掺杂CaSnSiO₅橙红色荧光粉性能研究

^1,2*

作者信息 +

Research on the performance of Eu³⁺-doped CaSnSiO₅ orange-red phosphor for white LEDs

Lu Chendong¹, Xu Yingchao^1,2, Zhou Qiong¹, Lu Yi¹, Wu Panpan¹, Liu Yue¹

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文章历史 +

Received		Published
2022-07-11		2023-11-20
Issue Date	Revised Date
2023-11-29	2022-07-11

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摘要

通过两步固相法制备了一系列的CaSnSiO₅∶xEu³⁺荧光粉,研究了该荧光粉的物相结构及其光学性质。根据荧光光谱,确定了Eu³⁺的最佳掺杂浓度、临界能量传递距离以及平均寿命,并分析出浓度猝灭机制是电偶极之间的相互作用。在LED可能的最大工作温度范围内(393～423K)样品显示出了良好的热稳定性,最后,将样品与商用蓝粉和黄绿粉封装到395nm LED芯片上,在不同的驱动电流下LED样品发出明亮暖白光,且具有显色指数高(CRI>80)、色容差小(SDCM≤7)等优点。综上,所制备的CaSnSiO₅∶xEu³⁺荧光粉在WLED上具有较好的应用前景。

Abstract

A series of CaSnSiO₅∶xEu³⁺ phosphors were prepared by two-step solid-state reaction.The phase structure and optical properties of the phosphors were investigated.Based on the fluorescence spectra,the optimal doping concentration,critical energy transfer distance,and average lifetime of Eu³⁺ were determined,and the concentration quenching mechanism could be ascribed to the interaction between the electric dipoles.In the possible maximum operating temperature range of LEDs (393～423K),the samples showed good thermal stability.Finally,the samples and commercial blue phosphor and yellow-green phosphor were packaged onto 395nm LED chips,and the LED samples emitted bright warm white light under different driving currents,with high color rendering index (CRI>80),small color tolerance (SDCM≤7) and other advantages.In summary,the prepared CaSnSiO₅∶xEu³⁺ phosphor had a good application prospect on WLED.

关键词

荧光粉 / CaSnSiO₅∶xEu³⁺ / 白光LED

Key words

phosphors / CaSnSiO₅∶xEu³⁺ / white LED

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白光LED用Eu³⁺掺杂CaSnSiO₅橙红色荧光粉性能研究[J]. 化工新型材料, 2023, 51(11): 128-132 DOI:10.19817/j.cnki.issn1006-3536.2023.11.023

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