Ceiling temperature and photothermalsensitivity of aqueous MSA-CdTe quantum dots thermometers

被引：8

作者：

Jiang, Xinbing ^{[1
]}

Shao, Jinyou ^{[1
]}

Li, Ben Q. ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

[2] Univ Michigan, Dept Mech Engn, Dearborn, MI 48128 USA

来源：

APPLIED SURFACE SCIENCE | 2017年 / 394卷

关键词：

Hydrothermal process; Ceiling temperature; MSA-CdTe; Temperature sensor; Sensitivity; Size effect; CRITICAL GROWTH TEMPERATURE; NANOCRYSTALS; NANOTHERMOMETERS; CDSE; SENSITIVITY;

D O I：

10.1016/j.apsusc.2016.10.149

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ceiling temperature, photothermal sensitivity and size effects of aqueous mercaptosuccinic acid modified CdTe quantum dots (MSA-CdTe QDs) are determined from experimental measurements for temperature sensing applications. Measured data show that the ceiling temperature of MSA-CdTe prepared by the hydrothermal process is 60 degrees C, better than that of CdTe QDs modified by thioglycolic acid (TGA). Aqueous MSA-CdTe QDs exhibit a reversible PL spectral peak wavelength shift within the temperature range from room temperature up to the ceiling temperature 60 degrees C. With the size of the QDs increasing from 1.9 nm to 3.1 nm, the photothermal sensitivity remains unchanged and a stable linear correlation with a slope of 0.16 nm/degrees C exists between the PL spectral peak wavelength position and the temperature. The morphology of QDs was examined under transmission electron microscopy (TEM). The measured emission photoluminescence data by QDs further show that the thermal sensitivity is independent of the size of the QDs for the size range studied. Theoretical analysis is presented to substantiate the experiment results. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：554 / 561

页数：8

共 24 条

[1] Semiconductor nanocrystals as fluorescent biological labels [J].

Bruchez, M ;

Moronne, M ;

Gin, P ;

Weiss, S ;

Alivisatos, AP .

SCIENCE, 1998, 281 (5385) :2013-2016

[2] Temperature dependence of band gap in CdSe nanocrystals [J].

Dai, Quanqin ;

Song, Yanli ;

Li, Dongmei ;

Chen, Haiyong ;

Kan, Shihai ;

Zou, Bo ;

Wang, Yingnan ;

Deng, Yongqiang ;

Hou, Yuanyuan ;

Yu, Shidan ;

Chen, Lixue ;

Liu, Bingbing ;

Zou, Guangtian .

CHEMICAL PHYSICS LETTERS, 2007, 439 (1-3) :65-68

[3] Size-Dependent Temperature Effects on PbSe Nanocrystals [J].

Dai, Quanqin ;

Zhang, Yu ;

Wang, Yingnan ;

Hu, Michael Z. ;

Zou, Bo ;

Wang, Yiding ;

Yu, William W. .

LANGMUIR, 2010, 26 (13) :11435-11440

[4] Thiol-capped CdTe nanocrystals: progress and perspectives of the related research fields [J].

Gaponik, Nikolai ;

Rogach, Andrey L. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2010, 12 (31) :8685-8693

[5] High-Sensitivity Fluorescence Lifetime Thermal Sensing Based on CdTe Quantum Dots [J].

Haro-Gonzalez, P. ;

Martinez-Maestro, L. ;

Martin, I. R. ;

Garcia-Sole, J. ;

Jaque, D. .

SMALL, 2012, 8 (17) :2652-2658

[6]

Huynh WU, 1999, ADV MATER, V11, P923, DOI 10.1002/(SICI)1521-4095(199908)11:11<923::AID-ADMA923>3.0.CO

[7]

2-T

[8] QUANTUM-SIZE EFFECTS OF INTERACTING ELECTRONS AND HOLES IN SEMICONDUCTOR MICROCRYSTALS WITH SPHERICAL SHAPE [J].

KAYANUMA, Y .

PHYSICAL REVIEW B, 1988, 38 (14) :9797-9805

[9]

Kazes M, 2002, ADV MATER, V14, P317, DOI 10.1002/1521-4095(20020219)14:4<317::AID-ADMA317>3.3.CO

[10]

2-L

← 1 2 3 →