Karol Bartosiewicz

A low-threshold mechanoluminescence platform for broadband NIR emission and obstruction-penetrating optical communication

Broadband near-infrared (NIR) luminescent materials are highly sought after for next-generation optoelectronics under dim or invisible conditions, yet simultaneously achieving broadband NIR emission, strong low-threshold mechanoluminescence (ML), and self-recoverable mechano-opti...

Host–Dopant Engineering of Ce 4+ ‐Dominant Y 3 (Al,Ga) 5 O 12 :Ce,Mg Scintillators for High‐Performance X‐Ray Imaging

ABSTRACT Fast scintillators are essential for advanced X‐ray imaging and time‐of‐flight techniques. Although stabilizing Ce 4+ ions in garnet hosts is an effective strategy for suppressing the afterglow and accelerating scintillation, it often introduces quenching pathways that r...

Boosting NIR Emissions and Thermal Resistance in Cr3+-Doped MgGa2O4 Semiconductor Microcrystals by Energy Transfer for Smart Detection

High-radiant-intensity broadband near-infrared (NIR) emitters are highly desirable for nondestructive testing, night-vision imaging, and information encryption. However, the exploration of phosphors that possess both high luminous efficiency and outstanding thermal stability cont...