scholarly journals Ratiometric temperature measurement using negative thermal quenching of intrinsic BiFeO3 semiconductor nanoparticles

RSC Advances ◽  
2020 ◽  
Vol 10 (29) ◽  
pp. 16982-16986
Author(s):  
Željka Antić ◽  
K. Prashanthi ◽  
Sanja Kuzman ◽  
Jovana Periša ◽  
Zoran Ristić ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Thermal Quenching ◽  
Relative Sensitivity ◽  
Semiconductor Nanoparticles ◽  
Temperature Resolution ◽  
Luminescence Thermometry

Negative thermal quenching of intrinsic BiFeO3 semiconductor nanoparticles for ratiometric luminescence thermometry with 2.5% K−1 relative sensitivity and 0.2 K temperature resolution.

Thermally boosted upconversion and downshifting luminescence in Sc2(MoO4)3:Yb/Er with two-dimensional negative thermal expansion

2021 ◽  
Author(s):  
Jinsheng Liao ◽  
Minghua Wang ◽  
Fulin Lin ◽  
Zhuo Han ◽  
Datao Tu ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Near Infrared ◽  
Negative Thermal Expansion ◽  
Thermal Quenching ◽  
Relative Sensitivity ◽  
Strong Temperature Dependence ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Higher Temperature

Abstract Lanthanide (Ln3+)-doped phosphors generally suffer from thermal quenching, in which their photoluminescence (PL) intensities decrease at the higher temperature. Herein, we report a class of unique two-dimensional negative-thermal-expansion phosphor of Sc2(MoO4)3:Yb/Er. By virtue of the reduced distances between sensitizers and emitters as well as confined energy migration with increasing the temperature, a 45-fold enhancement of green upconversion (UC) luminescence and a 450-fold enhancement of near-infrared downshifting (DS) luminescence of Er3+ are achieved from 25 to 500 ˚C. The thermally boosted UC and DS luminescence mechanism is systematically investigated through in situ temperature-dependent Raman spectroscopy, synchrotron X-ray diffraction and PL dynamics. Moreover, the luminescence lifetime of 4I11/2 of Er3+ in Sc2(MoO4)3:Yb/Er displays a strong temperature dependence, enabling ratiometric thermometry with the highest relative sensitivity of 13.4%/K at 298 K. These findings may gain a vital insight into the design of negative-thermal-expansion Ln3+-doped phosphors for versatile applications.

Time Resolved Temperature Measurement of Single Gold Structures via Luminescence Thermometry

MRS Advances ◽  
2018 ◽  
Vol 3 (14) ◽  
pp. 747-751 ◽  
Author(s):  
Ali Rafiei Miandashti ◽  
Martin Kordesch ◽  
Hugh H. Richardson
Keyword(s):  
Thermal Conductivity ◽  
Temperature Measurement ◽  
Heat Dissipation ◽  
Time Resolved ◽  
Temperature Decay ◽  
Energy Transitions ◽  
The Absolute ◽  
532 Nm ◽  
Luminescence Thermometry

ABSTRACTHere we report the use of luminescence thermometry to measure the temperature decay from single gold structure into the substrate of AlGaN:Er3+ film. We looked at Er3+ ion photoluminescence upon illumination by modulated 532 nm laser and recorded time-resolved luminescence of 2H11/2 → 4I15/2 and the 4S3/2 → 4I15/2 energy transitions. We calculated the heat generated from gold microdisk and observed the rate of heat dissipation to the environment. We directly calculated the absolute thermal conductivity of 1.7 W/mK for AlGaN: Er3+ film which was in agreement with the literature.

scholarly journals Multiple ratiometric nanothermometry using semiconductor BiFeO3 nanowires and quantitative validation of thermal sensitivity

2022 ◽  
Vol 10 (1) ◽  
Author(s):  
K. Prashanthi ◽  
K. Krishna Mohan ◽  
Željka Antić ◽  
Kaveh Ahadi ◽  
Miroslav D. Dramicanin
Keyword(s):  
Analytical Hierarchy Process ◽  
High Performance ◽  
Thermal Sensitivity ◽  
Thermal Quenching ◽  
Relative Sensitivity ◽  
Temperature Sensors ◽  
Contact Ratio ◽  
Close Match ◽  
Quantitative Validation ◽  
Hierarchy Process

AbstractHere, we report a very sensitive, non-contact, ratio-metric, and robust luminescence-based temperature sensing using a combination of conventional photoluminescence (PL) and negative thermal quenching (NTQ) mechanisms of semiconductor BiFeO3 (BFO) nanowires. Using this approach, we have demonstrated the absolute thermal sensitivity of ~ 10 mK−1 over the 300–438 K temperature range and the relative sensitivity of 0.75% K−1 at 300 K. Further, we have validated thermal sensitivity of BFO nanowires quantitatively using linear regression and analytical hierarchy process (AHP) and found close match with the experimental results. These results indicated that BFO nanowires are excellent candidates for developing high‐performance luminescence-based temperature sensors. Graphical abstract

scholarly journals One ion to catch them all: Targeted high-precision Boltzmann thermometry over a wide temperature range with Gd3+

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Dechao Yu ◽  
Huaiyong Li ◽  
Dawei Zhang ◽  
Qinyuan Zhang ◽  
Andries Meijerink ◽  
...  
Keyword(s):  
Wide Temperature Range ◽  
Thermal Sensitivity ◽  
Energy Levels ◽  
Relative Sensitivity ◽  
Black Body ◽  
Temperature Sensing ◽  
Lanthanide Ions ◽  
Visible Range ◽  
Temperature Range ◽  
Luminescence Thermometry

AbstractRatiometric luminescence thermometry with trivalent lanthanide ions and their 4fn energy levels is an emerging technique for non-invasive remote temperature sensing with high spatial and temporal resolution. Conventional ratiometric luminescence thermometry often relies on thermal coupling between two closely lying energy levels governed by Boltzmann’s law. Despite its simplicity, Boltzmann thermometry with two excited levels allows precise temperature sensing, but only within a limited temperature range. While low temperatures slow down the nonradiative transitions required to generate a measurable population in the higher excitation level, temperatures that are too high favour equalized populations of the two excited levels, at the expense of low relative thermal sensitivity. In this work, we extend the concept of Boltzmann thermometry to more than two excited levels and provide quantitative guidelines that link the choice of energy gaps between multiple excited states to the performance in different temperature windows. By this approach, it is possible to retain the high relative sensitivity and precision of the temperature measurement over a wide temperature range within the same system. We demonstrate this concept using YAl3(BO3)4 (YAB):Pr3+, Gd3+ with an excited 6PJ crystal field and spin-orbit split levels of Gd3+ in the UV range to avoid a thermal black body background even at the highest temperatures. This phosphor is easily excitable with inexpensive and powerful blue LEDs at 450 nm. Zero-background luminescence thermometry is realized by using blue-to-UV energy transfer upconversion with the Pr3+−Gd3+ couple upon excitation in the visible range. This method allows us to cover a temperature window between 30 and 800 K.

scholarly journals A single-band ratiometric luminescent thermometer based on tetrafluorides operating entirely in the infrared region

2021 ◽  
Author(s):  
Karolina Trejgis ◽  
Karolina A Ledwa ◽  
Artur Bednarkiewicz ◽  
Lukasz Marciniak
Keyword(s):  
Temperature Measurement ◽  
Measurement Technique ◽  
Spectroscopic Properties ◽  
Infrared Region ◽  
Single Band ◽  
Thermally Induced ◽  
Application Potential ◽  
Induced Changes ◽  
Temperature Measurement Technique ◽  
Luminescence Thermometry

Luminescence thermometry is a remote temperature measurement technique that relies on thermally induced changes in spectroscopic properties. Because of its great application potential, even under very demanding conditions where other...

scholarly journals Implementing Defects for Ratiometric Luminescence Thermometry

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1333 ◽  
Author(s):  
Joanna Drabik ◽  
Karolina Ledwa ◽  
Łukasz Marciniak
Keyword(s):  
Elevated Temperatures ◽  
Relative Sensitivity ◽  
Excitation Wavelength ◽  
Temperature Dependent ◽  
Defect Emission ◽  
Lutetium Oxide ◽  
Temperature Reading ◽  
Important Challenge ◽  
Hand Defect ◽  
Luminescence Thermometry

In luminescence thermometry enabling temperature reading at a distance, an important challenge is to propose new solutions that open measuring and material possibilities. Responding to these needs, in the nanocrystalline phosphors of yttrium oxide Y2O3 and lutetium oxide Lu2O3, temperature-dependent emission of trivalent terbium Tb3+ dopant ions was recorded at the excitation wavelength 266 nm. The signal of intensity decreasing with temperature was monitored in the range corresponding to the 5D4 → 7F6 emission band. On the other hand, defect emission intensity obtained upon 543 nm excitation increases significantly at elevated temperatures. The opposite thermal monotonicity of these two signals in the same spectral range enabled development of the single band ratiometric luminescent thermometer of as high a relative sensitivity as 4.92%/°C and 2%/°C for Y2O3:Tb3+ and Lu2O3:Tb3+ nanocrystals, respectively. This study presents the first report on luminescent thermometry using defect emission in inorganic phosphors.

scholarly journals Multiple Ratiometric Nanothermometry using Semiconductor BiFeO3 Nanowires and Quantitative Validation of Thermal Sensitivity

2021 ◽  
Author(s):  
Prashanthi Kovur ◽  
Krishna M Kovur ◽  
Zeljka Antic ◽  
Kaveh Ahadi ◽  
Miroslav D. Dramicanin
Keyword(s):  
Analytical Hierarchy Process ◽  
High Performance ◽  
Thermal Sensitivity ◽  
Thermal Quenching ◽  
Relative Sensitivity ◽  
Temperature Sensors ◽  
Contact Ratio ◽  
Close Match ◽  
Quantitative Validation ◽  
Hierarchy Process

Here, we report a very sensitive, non-contact, ratio-metric, and robust temperature sensing using a combination of conventional and negative thermal quenching (NTQ) mechanisms of semiconductor BiFeO3 (BFO) nanowires. Using this approach, we have demonstrated the absolute thermal sensitivity of ~10x10^-3 K^-1 over the 300 K - 438 K temperature range and the relative sensitivity of 0.75% K^-1 at 300 K. Further, we have validated thermal sensitivity of BFO nanowires quantitatively using linear regression and analytical hierarchy process (AHP) and found close match with the experimental results. These results indicated that BFO nanowires are excellent candidates for developing high‐performance luminescence based temperature sensors.

scholarly journals Multiple Ratiometric Nanothermometry using Semiconductor BiFeO3 Nanowires and Quantitative Validation of Thermal Sensitivity

2021 ◽  
Author(s):  
Prashanthi Kovur ◽  
Krishna M Kovur ◽  
Zeljka Antic ◽  
Kaveh Ahadi ◽  
Miroslav D. Dramicanin
Keyword(s):  
Analytical Hierarchy Process ◽  
High Performance ◽  
Thermal Sensitivity ◽  
Thermal Quenching ◽  
Relative Sensitivity ◽  
Temperature Sensors ◽  
Contact Ratio ◽  
Close Match ◽  
Quantitative Validation ◽  
Hierarchy Process

Here, we report a very sensitive, non-contact, ratio-metric, and robust temperature sensing using a combination of conventional and negative thermal quenching (NTQ) mechanisms of semiconductor BiFeO3 (BFO) nanowires. Using this approach, we have demonstrated the absolute thermal sensitivity of ~10x10^-3 K^-1 over the 300 K - 438 K temperature range and the relative sensitivity of 0.75% K^-1 at 300 K. Further, we have validated thermal sensitivity of BFO nanowires quantitatively using linear regression and analytical hierarchy process (AHP) and found close match with the experimental results. These results indicated that BFO nanowires are excellent candidates for developing high‐performance luminescence based temperature sensors.

Dual-center co-doped and mixed ratiometric LuVO4:Nd3+/Yb3+ nanothermometers

2022 ◽  
Author(s):  
Ilya Kolesnikov ◽  
Elena V. Afanaseva ◽  
Mikhail Kurochkin ◽  
Elena I. Vaishlia ◽  
Evgenii Kolesnikov ◽  
...  
Keyword(s):  
Relative Sensitivity ◽  
Research Field ◽  
Thermal Sensors ◽  
Proof Of Concept ◽  
Temperature Resolution ◽  
Co Doping ◽  
Existing Problems ◽  
Potential Applications ◽  
Mixed Phosphors ◽  
Co Doped

Abstract During last decade luminescence thermometry has become a widely studied research field due to its potential applications for real time contactless temperature sensing where usual thermometers cannot be used. Special attention is paid to the development of accurate and reliable thermal sensors with simple reading. To address existing problems of ratiometric thermometers based on thermally-coupled levels, LuVO4:Nd3+/Yb3+ thermal sensors were studied as a proof-of-concept of dual-center thermometer obtained by co-doping or mixture. Both approaches to create a dual-center sensor were compared in terms of energy transfer efficiency, relative sensitivity, and temperature resolution. Effect of excitation mechanism and Yb3+ doping concentration on thermometric performances was also investigated. The best characteristics of Sr = 0.34 % K-1@298 K and ΔT = 0.2 K were obtained for mixed phosphors upon host excitation.

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