Be2+-Induced Red Emission Enhancement in CaAl12O19:Mn4+ for Wide Color Gamut Display: Suppressing Self-Reduction of Mn4+ to Mn2+

doi:10.1002/adom.202301480

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	Be2+-Induced Red Emission Enhancement in CaAl12O19:Mn4+ for Wide Color Gamut Display: Suppressing Self-Reduction of Mn4+ to Mn2+
	L. W. Zheng, L. L. Zhang, L. M. Fang, H. Wu, H. J. Wu, G. H. Pan, Y. X. Yang, Y. S. Luo, Z. D. Hao and J. H. Zhang
	2023
发表期刊	Advanced Optical Materials
ISSN	2195-1071
页码	8
摘要	Mn4+-activated CaAl12O19 (CAO: Mn4+) is recognized as a promising candidate for red phosphor used in wide color gamut displays. However, the spontaneous self-reduction of Mn4+ to Mn2+ occurs for charge compensation through Mn2+-Mn4+ substitution for Al3+-Al3+, lowering the quantum efficiency of Mn4+. To suppress the self-reduction, some divalent metal ions, including Ba2+, Sr2(+), Cd2(+), Zn2+, and Mg2+, are added for charge compensation instead of Mn2+, but only small luminescence enhancement is observed. In this paper, remarkable luminescence enhancement in CAO: Mn4+ via co-doping Be2+ is reported. The photoluminescence properties are studied as a function of Be2+ doping concentration, and the optimal Be2+ concentration of 0.01 is found. The internal quantum efficiency of 74.9% and external quantum efficiency of 56.3% are achieved under UV excitation, higher than those via co-doping other divalent metal ions. This study indicates that the addition of Be2+ dominates the charge compensation because Be2+ is closer to Al3+ in size than Mn2+ and other divalent metal ions. The backlight light-emitting diodes using CAO: Mn4+, Be2+ are fabricated, exhibiting a 110.1% Nation Television Standards Committee (NTSC) color gamut, wider than both the current commercial backlight using K2SiF6: Mn4+ (KSF) red phosphor and the conventional one using YAG yellow phosphor.
DOI	10.1002/adom.202301480
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收录类别	sci
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/68541
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	L. W. Zheng, L. L. Zhang, L. M. Fang, H. Wu, H. J. Wu, G. H. Pan, Y. X. Yang, Y. S. Luo, Z. D. Hao and J. H. Zhang. Be2+-Induced Red Emission Enhancement in CaAl12O19:Mn4+ for Wide Color Gamut Display: Suppressing Self-Reduction of Mn4+ to Mn2+[J]. Advanced Optical Materials,2023:8.
APA	L. W. Zheng, L. L. Zhang, L. M. Fang, H. Wu, H. J. Wu, G. H. Pan, Y. X. Yang, Y. S. Luo, Z. D. Hao and J. H. Zhang.(2023).Be2+-Induced Red Emission Enhancement in CaAl12O19:Mn4+ for Wide Color Gamut Display: Suppressing Self-Reduction of Mn4+ to Mn2+.Advanced Optical Materials,8.
MLA	L. W. Zheng, L. L. Zhang, L. M. Fang, H. Wu, H. J. Wu, G. H. Pan, Y. X. Yang, Y. S. Luo, Z. D. Hao and J. H. Zhang."Be2+-Induced Red Emission Enhancement in CaAl12O19:Mn4+ for Wide Color Gamut Display: Suppressing Self-Reduction of Mn4+ to Mn2+".Advanced Optical Materials (2023):8.

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