Abstract
Transparent oxyfluoride glass-ceramics (GCs) with embedded β-Na1.5Y1.5F6 crystals doped with Er3+ ions were fabricated by a melt-quenching method with subsequent heat-treatment. The structural characterizations and spectroscopic techniques were performed to verify the precipitation of β-Na1.5Y1.5F6 crystals and partition of the Er3+ dopant into the crystals. Bright green up-conversion (UC) emission was achieved in Er3+-doped glass-ceramic (Er-GC). Furthermore, the temperature-dependent visible UC behavior based on thermally coupled energy levels (TCLs) and non-thermally coupled energy levels (NTCLs) was also examined in the temperature range 298 k to 823 K with maximum relative sensitivity (Sr) of 1.1% K−1 at 298 K for TCLs in Er-G and Er-GC samples.
Highlights
Temperature (T) is a fundamental parameter that must be measured precisely in many scientific and engineering fields [1,2,3]
Traditional temperature measuring devices, such as contact temperature sensors based on electrical changes in materials, have limitations in a variety of situations, such as nano- and micro-scale regimes, fast moving objects, corrosive environments, and inside cells, [4,5,6]
Among the various temperature measurement methods, which include the use of thermocouples, thermistors, and temperature resistance detectors (RTDs), the optical thermometry based on fluorescence intensity ratio (FIR) has received a lot of attention in the last decades because of its quick response, electromagnetic passivity, self-reference, and high sensitivity [4,7,8,9]
Summary
Temperature (T) is a fundamental parameter that must be measured precisely in many scientific and engineering fields [1,2,3]. Among the various temperature measurement methods, which include the use of thermocouples, thermistors, and temperature resistance detectors (RTDs), the optical thermometry based on fluorescence intensity ratio (FIR) has received a lot of attention in the last decades because of its quick response, electromagnetic passivity, self-reference, and high sensitivity [4,7,8,9]. It reduces the impact of the experimental conditions, such as fluorescence loss and fluctuation of the pumping power [10,11]. Kusama et al [12]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
