Temperature sensing from the emission rise times of Eu3+ in SrY2O4

2014 ◽  
Vol 16 (46) ◽  
pp. 25636-25641 ◽  
Author(s):  
V. Lojpur ◽  
Ž. Antić ◽  
M. D. Dramićanin
Keyword(s):  
Rise Time ◽  
Temperature Sensing ◽  
Temperature Range ◽  
Luminescence Thermometry

The emission rise time of Eu3+-doped SrY2O4 was investigated in the temperature range of 20–200 °C for application in luminescence thermometry.

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 From quencher to potent activator – Multimodal luminescence thermometry with Fe3+ in the oxides MAl4O7 (M = Ca, Sr, Ba)

2021 ◽  
Author(s):  
Karolina Kniec ◽  
Wojciech Piotrowski ◽  
Karolina A Ledwa ◽  
Markus Suta ◽  
Luis Antonio Dias Carlos ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Temperature Sensing ◽  
Luminescence Thermometry

Luminescence (nano)thermometry is an emerging and promising field for remote temperature sensing and thermal imaging of both the surface and interior of objects. While the field is dominated by trivalent...

Synthesis, structure and temperature sensing of a lanthanide-organic framework constructed from a pyridine-containing tetracarboxylic acid ligand

CrystEngComm ◽  
2018 ◽  
Vol 20 (45) ◽  
pp. 7395-7400 ◽  
Author(s):  
Dian Zhao ◽  
Huizhen Wang ◽  
Guodong Qian
Keyword(s):  
High Temperature ◽  
Metal Organic Framework ◽  
Temperature Sensing ◽  
Tetracarboxylic Acid ◽  
High Temperature Range ◽  
Temperature Range ◽  
Acid Ligand ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Organic Framework

A high sensitive, thermostable mixed lanthanide metal–organic framework, Eu0.19Tb0.81PDDI, was developed as a self-calibrated thermometer effective in the high temperature range of 313 to 473 K.

scholarly journals Enhancing the Relative Sensitivity of V5+, V4+ and V3+ Based Luminescent Thermometer by the Optimization of the Stoichiometry of Y3Al5−xGaxO12 Nanocrystals

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1375 ◽  
Author(s):  
Kniec ◽  
Ledwa ◽  
Marciniak
Keyword(s):  
Energy Transfer ◽  
Emission Intensity ◽  
Spectral Response ◽  
Luminescent Properties ◽  
Relative Sensitivity ◽  
Temperature Sensing ◽  
Thermal Dependence ◽  
Temperature Range

In this work the influence of the Ga3+ concentration on the luminescent properties and the abilities of the Y3Al5−xGaxO12: V nanocrystals to noncontact temperature sensing were investigated. It was shown that the increase of the Ga3+ amount enables enhancement of V4+ emission intensity in respect to the V3+ and V5+ and thus modify the color of emission. The introduction of Ga3+ ions provides the appearance of the crystallographic sites, suitable for V4+ occupation. Consequently, the increase of V4+ amount facilitates V5+ → V4+ interionic energy transfer throughout the shortening of the distance between interacting ions. The opposite thermal dependence of V4+ and V5+ emission intensities enables to create the bandshape luminescent thermometr of the highest relative sensitivity of V-based luminescent thermometers reported up to date (Smax, 2.64%/°C, for Y3Al2Ga3O12 at 0 °C). An approach of tuning the performance of Y3Al5−xGaxO12: V nanocrystals to luminescent temperature sensing, including the spectral response, maximal relative sensitivity and usable temperature range, by the Ga3+ doping was presented and discussed.

Linear red/green ratiometric thermometry of Ho3+/Cr3+ co-doped red up-conversion tungstate materials

2021 ◽  
Author(s):  
Yan Zhao ◽  
Xusheng Wang ◽  
Rui Hu ◽  
Yanxia Li
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
High Sensitivity ◽  
Temperature Sensing ◽  
High Temperature Range ◽  
Temperature Range ◽  
Co Doped ◽  
Sensing Performance

Existing optical thermometers are faced with the challenges of high sensitivity limited to a very narrow high temperature range, while also lacking low temperature sensing performance. A new linear up-conversion...

Ultranarrow NIR bandwidth and temperature sensing of YOF:Yb3+/Tm3+ phosphor in low temperature range

2019 ◽  
Vol 206 ◽  
pp. 613-617 ◽  
Author(s):  
Hongyu Lu ◽  
Jinshuo Yang ◽  
Decai Huang ◽  
Qilin Zou ◽  
Mingwei Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Sensing ◽  
Temperature Range

scholarly journals The luminescence thermometry based on analysing of 3P0-3H5 emission band of Pr3+ ions in Pr3+:LiYF4 nanoparticles and microparticles

2019 ◽  
Vol 220 ◽  
pp. 02011
Author(s):  
Maksim Pudovkin ◽  
Stella Korableva ◽  
Elena Lukinova ◽  
Darya Koryakovtseva ◽  
Oleg Morozov ◽  
...  
Keyword(s):  
Temperature Sensitivity ◽  
Emission Band ◽  
Absolute Temperature ◽  
Temperature Dependent ◽  
Temperature Range ◽  
Dependent Parameter ◽  
Luminescence Thermometry

The study is devoted to the possibility of using and Pr3+:LiYF4 microparticles and nanoparticles as luminescent thermometers in the temperature range of 80-320 K. The ratio of luminescence peaks corresponding to the transitions from the 3P0 state to two Stark sublevels of the 3H5 state of Pr3+ ions is considered as a temperature-dependent parameter. This system demonstrates an absolute temperature sensitivity of 0.0009 K-1 at a temperature of 185 K.

Lanthanide Coordination Polymers of Mixed Phthalate/Adipate for Ratiometric Temperature Sensing in the Upper-Intermediate Temperature Range

2018 ◽  
Vol 57 (5) ◽  
pp. 2620-2630 ◽  
Author(s):  
Thammanoon Chuasaard ◽  
Athipong Ngamjarurojana ◽  
Sireenart Surinwong ◽  
Takumi Konno ◽  
Sareeya Bureekaew ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Temperature Sensing ◽  
Intermediate Temperature ◽  
Temperature Range ◽  
Lanthanide Coordination Polymers ◽  
Intermediate Temperature Range

Optical Triggering of 12 kV 1 cm2 4H-SiC Thyristors

2013 ◽  
Vol 740-742 ◽  
pp. 990-993 ◽  
Author(s):  
Sergey L. Rumyantsev ◽  
Mikhail E. Levinshtein ◽  
Michael S. Shur ◽  
Tanuj Saxena ◽  
Q.J. Zhang ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Rise Time ◽  
Optical Switch ◽  
Load Resistance ◽  
Weak Point ◽  
Optical Window ◽  
Critical Charge ◽  
Temperature Range ◽  
Large Load ◽  
Optical Triggering

We report on switch-on of 12 kV, 1cm2 optically triggered 4H-SiC thyristor fabricated by CREE Inc., to Imax=270 А with current rise time of ~ 3 s. Temperature dependence of holding current Ih in this thyristor has been experimentally studied in the temperature range from 300 to 425 K. It is shown that measurements of Ih temperature dependence under condition of optical switch-on at small anode bias and large load resistance reveal the existence of a ”weak point” within the optical window. This point is characterized by a much smaller critical charge than that within the remaining part of the window.

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