| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Solid-state Optical Materials and Luminescence Properties
|
| Presentation Title |
Development of Sc2Mo3O12:Eu3+ as a Red Phosphor with Superior Thermally Enhanced Emission |
| Author(s) |
Forough Jahanbazi, Yuanbing Mao |
| On-Site Speaker (Planned) |
Forough Jahanbazi |
| Abstract Scope |
Photoluminescence thermal quenching is one of the major challenges for practical lighting applications. Here, we have explored a novel strategy to dramatically enhance the luminescence at elevated temperature based on Sc2Mo3O12:Eu3+. Upon heating, an energy transfer intensified from the Sc2Mo3O12 host material to Eu3+ dopant resulting in an efficient red emission. The thermally induced contraction and distortion of the host lattice, owing to its negative thermal expansion property, is shown to be the cause for the enhanced energy transfer and consequently the intensified emission from the activator ion Eu3+. Finally, the mechanism of this thermally enhanced emission is discussed according to the negative thermal expansion of the host structure and its possible effect on the energy transfer intensity. Findings presented here provide inspiration for employing negative thermal expansion property to remedy the thermal quenching problem of phosphors existing in their lighting applications. |