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Title: Temperature-sensitive photoluminescent CdSe-ZnS polymer composite film for lock-in photothermal characterization

Abstract

The temperature dependence of the fluorescence spectrum of CdSe−ZnS core–shell quantum dots embedded in a polystyrene matrix is characterized between 30 °C and 60 °C. The spectrally integrated photoluminescence intensity is found to linearly decrease with −1.3%/ °C. This feature is exploited in a dual coating-substrate-configuration, consisting of a layer of this nanocomposite material, acting as a temperature sensor with optical readout, on top of an optically absorbing and opaque layer, acting as a photothermal excitation source, and covering a substrate material or structure of interest. From the frequency dependence of the optically detected photothermal signal in the frequency range between 5 Hz and 150 Hz, different thermal parameters of the constituent layers are determined. The fitted values of thermal properties of the different layers, determined in different scenarios in terms of the used a priori information about the layers, are found to be internally consistent, and consistent with literature values.

Authors:
; ; ;  [1];  [2];  [3]
  1. Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, Celestijnenlaan 200D, B-3001 Heverlee (Belgium)
  2. Department of Chemistry, Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200 F- box 2404, 3001 Heverlee (Belgium)
  3. Department of Mechanics of Materials and Constructions, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels (Belgium)
Publication Date:
OSTI Identifier:
22596791
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 119; Journal Issue: 22; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CADMIUM SELENIDES; EXCITATION; FILMS; FLUORESCENCE; FLUORESCENCE SPECTROSCOPY; FREQUENCY DEPENDENCE; FREQUENCY RANGE; LAYERS; NANOCOMPOSITES; PHOTOLUMINESCENCE; POLYSTYRENE; QUANTUM DOTS; READOUT SYSTEMS; SENSORS; SIGNALS; SUBSTRATES; TEMPERATURE DEPENDENCE; THERMODYNAMIC PROPERTIES; ZINC SULFIDES

Citation Formats

Liu, Liwang, E-mail: liwang.liu@hotmail.com, Meng, Lei, Wang, Ling, Glorieux, Christ, Zhong, Kuo, and Van Hemelrijck, Danny. Temperature-sensitive photoluminescent CdSe-ZnS polymer composite film for lock-in photothermal characterization. United States: N. p., 2016. Web. doi:10.1063/1.4953591.
Liu, Liwang, E-mail: liwang.liu@hotmail.com, Meng, Lei, Wang, Ling, Glorieux, Christ, Zhong, Kuo, & Van Hemelrijck, Danny. Temperature-sensitive photoluminescent CdSe-ZnS polymer composite film for lock-in photothermal characterization. United States. doi:10.1063/1.4953591.
Liu, Liwang, E-mail: liwang.liu@hotmail.com, Meng, Lei, Wang, Ling, Glorieux, Christ, Zhong, Kuo, and Van Hemelrijck, Danny. Tue . "Temperature-sensitive photoluminescent CdSe-ZnS polymer composite film for lock-in photothermal characterization". United States. doi:10.1063/1.4953591.
@article{osti_22596791,
title = {Temperature-sensitive photoluminescent CdSe-ZnS polymer composite film for lock-in photothermal characterization},
author = {Liu, Liwang, E-mail: liwang.liu@hotmail.com and Meng, Lei and Wang, Ling and Glorieux, Christ and Zhong, Kuo and Van Hemelrijck, Danny},
abstractNote = {The temperature dependence of the fluorescence spectrum of CdSe−ZnS core–shell quantum dots embedded in a polystyrene matrix is characterized between 30 °C and 60 °C. The spectrally integrated photoluminescence intensity is found to linearly decrease with −1.3%/ °C. This feature is exploited in a dual coating-substrate-configuration, consisting of a layer of this nanocomposite material, acting as a temperature sensor with optical readout, on top of an optically absorbing and opaque layer, acting as a photothermal excitation source, and covering a substrate material or structure of interest. From the frequency dependence of the optically detected photothermal signal in the frequency range between 5 Hz and 150 Hz, different thermal parameters of the constituent layers are determined. The fitted values of thermal properties of the different layers, determined in different scenarios in terms of the used a priori information about the layers, are found to be internally consistent, and consistent with literature values.},
doi = {10.1063/1.4953591},
journal = {Journal of Applied Physics},
number = 22,
volume = 119,
place = {United States},
year = {Tue Jun 14 00:00:00 EDT 2016},
month = {Tue Jun 14 00:00:00 EDT 2016}
}