Sodium Chloride Protected CdHgTe Quantum Dot Based Solid-State Near-Infrared Luminophore for Light-Emitting Devices and Luminescence Thermometry
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73584540" target="_blank" >RIV/61989592:15310/17:73584540 - isvavai.cz</a>
Result on the web
<a href="http://pubs.acs.org/doi/10.1021/acsphotonics.7b00222" target="_blank" >http://pubs.acs.org/doi/10.1021/acsphotonics.7b00222</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsphotonics.7b00222" target="_blank" >10.1021/acsphotonics.7b00222</a>
Alternative languages
Result language
angličtina
Original language name
Sodium Chloride Protected CdHgTe Quantum Dot Based Solid-State Near-Infrared Luminophore for Light-Emitting Devices and Luminescence Thermometry
Original language description
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 NaCI 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 position and the photoluminescence lifetime of CdHgTe QDs@NaCl are shown to serve as a base for two temperature detection schemes, namely, luminescence spectral and luminescence lifetime thermometry, a versatile optical technique for the noninvasive, noncontact estimation of local temperature.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Photonics
ISSN
2330-4022
e-ISSN
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Volume of the periodical
4
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
1459-1465
UT code for WoS article
000404098200024
EID of the result in the Scopus database
2-s2.0-85021181889