Simultaneous Measurement of the Emission Quantum Yield and Local Temperature: The Illustrative Example of SrF2:Yb3+/Er3+ Single Crystals

Invited for the cover of this issue is the Phantom-g group headed by Luis D. Carlos from CICECO - Aveiro Institute of Materials, University of Aveiro, Portugal. The cover image symbolizes the simultaneous measurement of the emission quantum yield and the absolute temperature with a primary luminescent thermometer.