稀土氟化物上转换纳米晶尺寸调控的研究进展  

Progress in Size-controlled Synthesis of Rare Earth Fluoride Upconversion Nanocrystals

作　　者：武素丽[1] 荀文斐 张淑芬[1] WU Suli;XUN Wenfei;ZHANG Shufen(State Key Laboratory of Fine Chemicals,Frontier Science Center for Smart Materials,Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]大连理工大学智能材料化工前沿科学中心,精细化工国家重点实验室,辽宁大连116024

出　　处：《材料导报》2023年第3期38-45,共8页Materials Reports

基　　金：国家自然科学基金(22178047,21878042);大连市科技创新基金(2020JJ26GX046)。

摘　　要：稀土掺杂的上转换发光材料是一类能够吸收低频率光子、发射高频率光子的反斯托克斯位移发光材料。镧系稀土氟化物NaREF4是上转换效率最高的基质材料之一。该类材料由于具有荧光寿命长、背景干扰弱、组织穿透性强、化学稳定性高等优点,被广泛应用于显示与防伪、生物荧光标记、高性能传感器等领域。近年来,研究者发现通过尺寸控制可以有效改善NaREF4材料的性能。本文详细介绍了可控地合成不同尺寸NaREF4晶体的方法和影响因素,并概述了NaREF4晶体尺寸对其发光性能的影响。Rare earth ions doped upconversion nanocrystals is a kind of material which can absorb low frequency photons and emit high frequency photons.Rare earth fluoride(NaREF4)is considered to be a kind of most efficient matrix for rare earth doped upconversion material.Due to their long luminescence lifetime,low background interference,deep penetration and high stability,upconversion nanocrystals are widely used in the field of display and anticounterfeiting,biomarker,bioimaging and sensors.During recent years,researchers found that the performance of NaREF4based upconversion nanocrystals can be effectively improved by controlling their size.In this paper,the influence of the size of NaREF4crystals on its luminescent properties is summarized,and the size controllable synthesis methods of NaREF4are introduced in detail.

关 键 词：上转换 稀土 纳米晶体 尺寸调控 

分 类 号：O7[理学—晶体学]