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两地占用用于构建双矿BaLaMgNbO6:Cr3+ 超宽带NIR
Yining Wang1, Yixin Sun1, Zheng Xu1
1Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education) School of Material Science and Engineering, Shandong University, Jinan 250061, PR China.
Inorganic chemistry
|May 2, 2024
概括
研究人员使用Cr3+化BaLaMgNbO6开发了一种新的超宽带近红外 (NIR) . 这种新型材料为光谱学,有机物分析和食品新鲜度检测的应用提供了增强的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 频谱学是一种光谱学.
- 发光的光度是非常的低.
背景情况:
- 近红外 (NIR) 光谱在各种行业和农业中变得越来越重要.
- 对于先进的智能NIR光源的需求越来越大.
- 现有的NIR光源可能在光谱覆盖或效率方面存在局限性.
研究的目的:
- 为下一代智能光源开发一种新型的超宽带NIR光.
- 研究Cr3+化BaLaMgNbO6 (BLMN) 的发光特性和潜在应用.
- 通过材料工程和加工优化的性能.
主要方法:
- 合成Cr3+配合的BaLaMgNbO6 (BLMN) .
- 使用光发光 (PL) 光谱 (77-250 K),时间解析的PL和电子偏磁共振 (EPR) 光谱学进行表征.
- 评估发光强度,热稳定性,内部量子效率 (IQE) 和外部量子效率 (EQE).
主要成果:
- 开发了一种超宽带NIR (650-1300 nm) 的发射峰值为830 nm (FWHM 210 nm).
- 确认的超宽带发射源自Cr3+T2转换和现场占用.
- 实现了51%的IQE,33%的EQE,并在100°C时保持了60%的发光强度,并通过流动策略进行增强.
结论:
- 3+化BLMN是一种有前途的超宽带NIR光体.
- 该材料表现出极好的热稳定性和高量子效率.
- 在有机物质定性分析和食品新鲜度检测中成功应用.
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