The thermal dependence of the luminescent properties of Eu3+ doped Y2MoO6 phosphor and its potential application in temperature sensing

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.

Download Full-text

Natural polysaccharide-based smart (temperature sensing) and active (antibacterial, antioxidant and photoprotective) nanoparticles with potential application in biocompatible food coatings

International Journal of Biological Macromolecules ◽

10.1016/j.ijbiomac.2019.04.194 ◽

2019 ◽

Vol 134 ◽

pp. 480-486 ◽

Cited By ~ 19

Author(s):

Andreii S. Kritchenkov ◽

Anton R. Egorov ◽

Natallia V. Dubashynskaya ◽

Olga V. Volkova ◽

Ludmila A. Zabodalova ◽

...

Keyword(s):

Potential Application ◽

Temperature Sensing ◽

Natural Polysaccharide

Download Full-text

Incorporating Ce3+ into a high efficiency phosphor Ca2PO4Cl:Eu2+ and its luminescent properties

RSC Advances ◽

10.1039/c4ra03087g ◽

2014 ◽

Vol 4 (53) ◽

pp. 27708-27713 ◽

Cited By ~ 13

Author(s):

Panlai Li ◽

Zhijun Wang ◽

Zhiping Yang ◽

Qinglin Guo

Keyword(s):

Thermal Stability ◽

Potential Application ◽

High Efficiency ◽

Blue Emission ◽

Luminescent Properties ◽

Excellent Thermal Stability ◽

Uv Excitation

Ca2PO4Cl:Ce3+, Eu2+ can produce the intense blue emission under the n-UV excitation, and have the excellent thermal stability. Based on the results, we are currently evaluating the potential application of Ca2PO4Cl:Ce3+, Eu2+ as a blue-emitting n-UV convertible phosphor.

Download Full-text

Key Issues in Microscale Temperature Sensing with Thermocouple Array

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.422.29 ◽

2011 ◽

Vol 422 ◽

pp. 29-34 ◽

Cited By ~ 5

Author(s):

Wei Qiang Sun ◽

Hai Xiao Liu ◽

Sheng Yong Xu

Keyword(s):

Integrated Circuits ◽

Failure Analysis ◽

Temperature Measurement ◽

Potential Application ◽

Temperature Sensing ◽

Local Temperature ◽

Calibration Measurement ◽

Key Issues ◽

Material Fabrication ◽

Critical Regions

Precise local temperature measurement is important for research on failure analysis of integrated circuits, micro/nano-fluidics, chemistry reactions in confined geometry, biological and biochemical reactions, etc. Thermocouple arrays are believed powerful for local temperature sensing at the microscale with high spatial, temporal, and temperature resolutions. And, as a passive device, a thermocouple array can often be embedded in a complicated solid device, providing real-time temperature information of critical regions of the device. In this work, we will discuss in detail some key issues of temperature sensing at the microscale by using thermocouple arrays, in terms of material, fabrication, calibration, measurement, time-resolvable mapping, and potential application.

Download Full-text