About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Solid-state Optical Materials and Luminescence Properties
|
Presentation Title |
Application of La2Zr2O7:Pr3+ Nanoparticles for Luminescence Thermometry |
Author(s) |
Forough Jahanbazi, Yuanbing Mao |
On-Site Speaker (Planned) |
Forough Jahanbazi |
Abstract Scope |
Luminescence thermometry has become fascinating owing to its applicability in chemically and electromagnetically harsh environments. A wide temperature sensing range is required for luminescent thermometric materials. Herein, we have demonstrated that pyrochlore La2Zr2O7:Pr3+ nanoparticles can serve as a promising optical temperature sensing material over a wide temperature range. Specifically, we have taken advantage of the intervalence charge transfer state of Pr3+ doping ion for luminescence temperature sensing and confirmed excellent optical thermometric performance from these nanoparticles in a temperature sensing range of 85-705 K. The thermal sensing was measured by exploiting one thermometric parameter, i.e. the fluorescence intensity ratio. A maximum relative sensitivity of > 0.4%·K−1 from 165 to 205 K and a low temperature uncertainty of 1.21 K at 185 K is obtained. This work provides a useful inspiration for exploring appropriate host materials with slow thermal-quenching channels to develop optical thermometric materials over a wide temperature sensing range. |