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在化物双洛夫斯基特中近乎完全抑制NIR-II发光灭,以通过面积工程实现表面功能化

Qiudong Duan¹, Yusheng Xu¹, Yu Zha¹

¹Faculty of Material Science and Engineering, Key Lab of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|June 27, 2024

概括

双矿的面积工程通过抑制发光灭,显著提高了近红外II (NIR-II) 排放效率. 这一突破增强了光电子,光疗和生物成像应用的材料.

科学领域:

材料科学材料科学材料科学
固态化学固态化学
发光的光度是非常的低.

背景情况:

在近红外II (NIR-II) 频谱 (1000-1700 nm) 中发射的兰化物基材料对先进的应用具有前景.
由于发光灭的低量子效率阻碍了这些材料的广泛使用.

研究的目的:

设计Cs2NaErCl6双矿具有高度定向的 (222) 面,以抑制NIR-II发光灭.
研究面依赖光发和表面灭效应的潜在机制.

主要方法:

在Cs2NaErCl6双矿的方面工程.
发光性质的表征,包括量子效率和量子产量.
实验和理论研究,包括分子动力学模拟.

主要成果:

实现了高度定向的 (222) 面,使NIR-II发光灭几乎完全抑制.
在紫外线激发下,Cs2Ag0.10Na0.90ErCl6微晶体在1540 nm时表现出90 ± 6%的量子效率.
Cs2NaYb0.40Er0.60Cl6微晶体在980nm激发下,在1540nm时显示出98.6%的量子产量记录.
揭示了面体依赖的发射机制,包括表面不对称性和减少的非辐射过程.

结论:

面积工程是一种可行的策略,可以提高双矿的发光效率.
了解表面火机制,如声子合,对于设计高效的NIR-II发射器至关重要.
这项工作为开发高效的NIR-II材料为各种应用开辟了新的途径.

关键词:

在NIR-II中,发光灭是NIR-II的灭.双倍的佩罗夫斯基特.排放机制的排放机制.面部工程是面部工程.表面功能化的功能化.

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