An energy self-compensating phosphosilicate material applied to temperature sensors

摘要: For years, researchers have been exploring effective methods of sustaining the emission intensity phosphors with increasing temperature by suppressing loss. In this work, we developed a multi-cationic site and lattice-distorted phosphosilicate phosphor, Ca8Al2P6SiO28:Ce, Eu. To obtain luminous-self-healing properties, attempted to change energy depths density distributions traps achieve self-suppression loss compensation from or transfer between Ce3+ Eu2+/Eu3+. The temperature-dependent spectra indicate that luminescence presents similar trends in both single co-doped samples. Meanwhile, Eu2+/Eu3+ intensities show obvious differences. Combined thermoluminescence curves, decay times, fluorescence characteristics cathodoluminescence spectra, speculate play an important role due smaller difference excited states conduction band. abnormal mainly results phenomenon, high thermal sensitive ratio is obtained broad range, which implies material can be applied sensors.