Be2+-Induced Red Emission Enhancement in CaAl12O19:Mn4+ for Wide Color Gamut Display: Suppressing Self-Reduction of Mn4+ to Mn2+
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | Advanced Optical Materials
 |
| 出版日期 | 2023 |
| 页码 | 8 |
| ISSN号 | 2195-1071 |
| DOI | 10.1002/adom.202301480 |
| 英文摘要 | 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. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [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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