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Updated: Jul 24, 2025

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超宽近红外发射LiInF:Cr3+与极弱的水晶场
Liping Song1,2,3,4, Sisi Liang3,4, Wendong Nie3,4
1School of Rare Earths, University of Science and Technology of China, Hefei, Anhui 230026, China.
Inorganic chemistry
|July 3, 2023
概括
一种新的添加的印四化物 (LiInF4:Cr3+) ,当被蓝光激发时,可以有效地发射近红外 (NIR) 光. 这种宽带NIR发射对非破坏性检查和生物医学成像应用具有前景.
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:
- 宽带近红外 (NIR) 光对实时非破坏性检查至关重要.
- 有效的光器需要广泛的发射光谱才能达到最佳性能.
研究的目的:
- 为了合成和描述一种新的蓝光激发LiInF4:Cr3+和宽带NIR发射的新型蓝光.
- 评估这种在NIR光转换发光二极管 (pc-LED) 中的潜力,用于实际应用.
主要方法:
- 合成LiInF4:Cr3+. 这种的合成.
- 结构和晶体场属性的表征.
- 一个NIR pc-LED装置的制造和测试.
- 在识别手部血管分布时的应用演示.
主要成果:
- 成功合成了LiInF4:Cr3+,在700-1400纳米范围内呈现NIR辐射.
- 实现的宽带发射在980nm的峰值,在470nm激发下,在210nm的半极最大的全宽度.
- 演示了一种NIR pc-LED,其辐射流量为5.54mW,其辐射流量为150mA,能够可视化血管.
结论:
- LiInF4:Cr3+ 具有较弱的晶体场强度和强大的电子声波合,有助于其宽带NIR发射.
- 开发的NIR pc-LED显示了生物医学成像和非破坏性测试的巨大潜力.
- 这项研究突显了LiInF4:Cr3+的前景,用于先进的光学应用.
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