光电研究作为了解激活NIR材料中的非辐射过程的关键
Natalia Majewska1, Mu-Huai Fang2, Sebastian Mahlik1
1Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdansk, Wita Stwosza 57, 80-308 Gdansk, Poland.
Journal of the American Chemical Society
|August 2, 2024
概括
这项研究合成了添加氧化物 (Ga1.98-InO3:0.02Cr3+) 用于光电子应用. 研究人员发现了一种新型的孔型热灭机制, 可用于近红外发射器和UV探测器.
科学领域:
- 材料科学
- 固态物理
- 光电子产品
背景情况:
- 用添加氧化物研究其发光和光电性质.
- 了解发光灭机制对于优化材料性能至关重要.
- 现有的文献通常将火归因于杂材料中的特定电子过渡.
研究的目的:
- 合成Ga1.98- 在O3:0.02Cr3+ 材料的含量不同 (x=0.0-1.0).
- 研究这些材料的近红外宽带辐射和光电特性.
- 阐明发光灭机制并探索它们的潜在应用.
主要方法:
- 一系列Ga1.98-InO3:0.02Cr3+材料的合成
- 包括吸收和发光在内的光学特性.
- 对光流激发光谱和温度依赖的发光灭的分析.
主要成果:
- 光流激发光谱与吸收光谱相关,表明Cr3+离子参与载体促进.
- 发光火与Cr3+离子的热电离有关,特别是对应带中的孔形成,而不是电子转移.
- 在Cr3+注射氧化物中发现了一种新的孔型热火机制.
结论:
- 合成的Ga1.98-InO3:0.02Cr3+材料具有近红外发射器和紫外线探测器的双重功能.
- 发现的孔型热灭机制为化材料的发光控制提供了新的见解.
- 这些材料在NIR和UV光谱区域的光电子设备中具有显著的应用潜力.
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