ACS Photonics, volume 4, issue 6, pages 1459-1465
Sodium Chloride Protected CdHgTe Quantum Dot Based Solid-State Near-Infrared Luminophore for Light-Emitting Devices and Luminescence Thermometry
1
Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký University in Olomouc, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
|
Publication type: Journal Article
Publication date: 2017-05-25
Electronic, Optical and Magnetic Materials
Biotechnology
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering
Abstract
Solid-state luminophores operating in the near-infrared (NIR) region may have applications in sensing, communication, and medicine. We report environmentally protected solid-state NIR-emitting luminophores fabricated by embedding CdHgTe colloidal quantum dots (QDs) into a NaCl matrix, with remarkable photo- and thermal stability and a photoluminescence quantum yield of 31% in the solid state, which is among the highest reported for solid-state NIR luminophores so far. We employed this luminophore as a down-conversion layer in a NIR-light-emitting device with a stable emission at 940 nm. Carrier recombination dynamics of the CdHgTe QDs@NaCl powders are examined as a function of temperature using steady-state and transient photoluminescence spectroscopy, and characteristic parameters such as the band gap, the temperature coefficient, the Debye temperature, the activation energy of thermal quenching, and radiative and nonradiative recombination rates are derived. Temperature-dependent changes of the spectral...
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Kalytchuk S. M. et al. Sodium Chloride Protected CdHgTe Quantum Dot Based Solid-State Near-Infrared Luminophore for Light-Emitting Devices and Luminescence Thermometry // ACS Photonics. 2017. Vol. 4. No. 6. pp. 1459-1465.
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Kalytchuk S. M., Marcus A., TOMANEC O., Zbořil R., Gaponik N., Rogach A. L. Sodium Chloride Protected CdHgTe Quantum Dot Based Solid-State Near-Infrared Luminophore for Light-Emitting Devices and Luminescence Thermometry // ACS Photonics. 2017. Vol. 4. No. 6. pp. 1459-1465.
Cite this
RIS
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TY - JOUR
DO - 10.1021/acsphotonics.7b00222
UR - https://doi.org/10.1021/acsphotonics.7b00222
TI - Sodium Chloride Protected CdHgTe Quantum Dot Based Solid-State Near-Infrared Luminophore for Light-Emitting Devices and Luminescence Thermometry
T2 - ACS Photonics
AU - Kalytchuk, S. M.
AU - Marcus, Adam
AU - TOMANEC, ONDŘEJ
AU - Zbořil, Radek
AU - Gaponik, Nikolai
AU - Rogach, Andrey L.
PY - 2017
DA - 2017/05/25
PB - American Chemical Society (ACS)
SP - 1459-1465
IS - 6
VL - 4
SN - 2330-4022
ER -
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@article{2017_Kalytchuk,
author = {S. M. Kalytchuk and Adam Marcus and ONDŘEJ TOMANEC and Radek Zbořil and Nikolai Gaponik and Andrey L. Rogach},
title = {Sodium Chloride Protected CdHgTe Quantum Dot Based Solid-State Near-Infrared Luminophore for Light-Emitting Devices and Luminescence Thermometry},
journal = {ACS Photonics},
year = {2017},
volume = {4},
publisher = {American Chemical Society (ACS)},
month = {may},
url = {https://doi.org/10.1021/acsphotonics.7b00222},
number = {6},
pages = {1459--1465},
doi = {10.1021/acsphotonics.7b00222}
}
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Kalytchuk, S. M., et al. “Sodium Chloride Protected CdHgTe Quantum Dot Based Solid-State Near-Infrared Luminophore for Light-Emitting Devices and Luminescence Thermometry.” ACS Photonics, vol. 4, no. 6, May. 2017, pp. 1459-1465. https://doi.org/10.1021/acsphotonics.7b00222.