High-temperature scintillators are critical components for X-ray imaging technique used in extreme environments such as oil well-logging, nuclear reactors and industrial inspections. There are a large number of lead-free metal halides such as Cu and Mn-based perovskites have high brightness, but these metal halides suffer from severe thermal quenching.
Here, we find rare-earth metal halide perovskites are promising high-temperature scintillators due to their remarkable thermal stability, displaying only slight or even anti-thermal quenching properties. This thermally stable emission up to 423 K results from their high Debye temperature (>200 K) and thermally-stable energy transfer efficiency.
The findings provide insights into bolstering the structural rigidity of Lu-halide perovskites in achieving thermally-stable luminescence for high-temperature scintillators.
The work titled “ Leveraging Structural Rigidity for Thermal Robust Scintillation in Rare-Earth Halide Perovskites ”, was published on Advanced Powder Materials (published on Nov. 7, 2025).
Advanced Powder Materials
Experimental study
Not applicable
Leveraging Structural Rigidity for Thermal Robust Scintillation in Rare-Earth Halide Perovskites
7-Nov-2025