Carbon dot grafted SrAl2O4:Eu,Dy dual-emitting phosphor for ratiometric temperature sensing

被引：15

作者：

Lei, Bingfu ^{[1
]}

Li, Wei ^{[1
]}

Zhang, Haoran ^{[1
]}

Wang, Jin ^{[1
]}

Liu, Yingliang ^{[1
]}

Zhuang, Jianle ^{[1
]}

Chen, Shi ^{[1
]}

机构：

[1] South China Agr Univ, Coll Mat & Energy, Guangdong Prov Engn Technol Res Ctr Opt Agr, Guangzhou 510642, Guangdong, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 108期

关键词：

PHOTOLUMINESCENCE;

D O I：

10.1039/c5ra15463d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple and effective strategy has been carried out to design a ratiometric temperature sensor in this work. Carbon dots (CDs), which benefit from surface methoxysilyl groups after using an organosilane as a coordinating solvent, are highly reactive intermediates responsible for bonding with silanols and hydroxyl groups from the silica-coated SrAl2O4:Eu,Dy phosphor (SAO). Hence, a CD-grafted SrAl2O4: Eu,Dy phosphor (CD-SAO) could be realized using a facile one-step sol-gel method. The as-prepared CD-SAO shows the characteristic fluorescence emissions of CDs (blue) and SAO (green) at a single excitation wavelength. The temperature dependence of the fluorescence intensity ratios for the two emission bands was studied, and it turned out that the composite has a wide linear temperature sensing range, which matches well with physiologically relevant temperatures. This rather simple approach for creating dual emission enables a completely new strategy for the application of these composites in temperature sensing.

引用

页码：89238 / 89243

页数：6

共 42 条

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