Mercaptosuccinic acid capped cadmium telluride quantum dots as luminescent thermometer over a wide temperature range of-100 to 60°C

被引：2

作者：

Jiang, Xinbing ^{[1
]}

Yang, Huan ^{[2
]}

Fei, Yuxi ^{[1
]}

Wang, Jiuhong ^{[3
]}

Ding, Shujiang ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Engn Res Ctr Energy Storage Mat & Devices, Sch Chem, Minist Educ, Xian 710049, Shaanxi, Peoples R China

[2] Xidian Univ, Sch Phys, Xian 710071, Shaanxi, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Shaanxi, Peoples R China

来源：

MATERIALS LETTERS | 2023年 / 352卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Quantum dots; Fluorescence; Sensors; Thermometry; Cryogenic; NANOPARTICLES;

D O I：

10.1016/j.matlet.2023.135228

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermal-sensitive photoluminescence (PL) properties of cadmium telluride quantum dots capped with mercaptosuccinic acid (MSA-CdTe QDs) were investigated by collecting QDs' PL steady-state spectra and decay curves from a cryogenic temperature of -100 degrees C to 60 degrees C. These QDs display peak wavelength redshift and shorten fluorescence lifetime with the increase of temperature. In situ XRD patterns showed that the QDs' grain size increases due to thermal expansion induced by the increasement of temperature, which further leads to the redshift of luminescence peak wavelength position. The results prove MSA-CdTe QDs are excellent candidates for luminescence thermometry over a broad temperature range of -100 to 60 degrees C.

引用

页数：4

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