稳定且高效的近红外发射在脊柱块中实现
Xibao Zhang1,2, Liang Zhou1,2, Hongpeng You1,2,3
1State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|February 4, 2025
概括
这项研究开发了高效的近红外发射器,在新型矩阵中使用 (Cr3+) 对,克服度火. 由此产生的材料显示出高的外部量子效率,对先进的光电子设备和夜视有希望.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光电学是指光电子产品.
背景情况:
- 开发高效和稳定的近红外 (NIR) 发射器对于光电子非常重要.
- 度灭和不清晰的发光机制阻碍了基于Cr3+对的NIR发射器的开发.
研究的目的:
- 设计和合成新型Cr3+兴奋剂材料,以减轻度火.
- 阐明Cr3+对的发光机制和能量水平结构.
- 为了评估这些材料在光电子设备中的性能.
主要方法:
- 将Cr3+离子纳入ZnAl2O4旋转矩阵,具有特定的层间距.
- 计算分析以确定Cr3+离子和Cr3+对分布.
- 光发光谱学用于研究辐射特性和能量水平.
- 流量辅助合成以优化材料性能.
- 用转换发光二极管 (pc-LED) 的制造和测试.
主要成果:
- 成功合成Cr3+兴奋剂的ZnAl2O4,能量的转移受到限制,火率降低.
- 识别Cr3+和Cr3+对格子位置和空间分布.
- 观察了Cr3+度依赖的辐射扩大和Cr3+对辐射频段在750 nm.
- 澄清了Cr3+-对的能量水平结构.
- 在制造的pc-LED中实现了高的外部量子效率 (58.3%) 和最小的效率滚动.
- 在pc-LED中证明了高输出功率 (650 mA时183 mW).
结论:
- 开发的Cr3+兴奋剂ZnAl2O4矩阵有效地抑制了度火.
- 这项研究提供了对Cr3+-pair发光机制的基本见解.
- 高性能pc-LED显示了NIR光源和夜视应用的巨大潜力.
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