Zero thermal-quenching photoluminescence in fresnoite glass with assistance of carrier compensating and surface crystal cluster

Combating the thermal-quenching effect and gaining optical parametric amplification are still serious challenges for high-temperature devices, due to the huge energy loss resulted from nonradiative transition. Herein, a negative thermal-quenching photoluminescence emerges on Eu3+-doped fresnoite Ba2TiSi2O8 glass-ceramic surface, and achieves sustained thermal-induced enhancement even heated over 300 °C. Originated from possible trap-level energy compensating, and characterized by capturing and releasing carriers, brighter red-light emissions mainly located at 619 nm (5D0→7F2) are expected to meet the operating demands in an elevated temperature. Indeed, such a good thermal shock resistance shall partially be attributed to surface crystal-cluster defense, which means that low-frequency rigid units corner-connected with each other suppress the perturbation of interlayer Ba/Eu-O bonds in spite of altering the thermal field. This superficial rigid frames-protected energy transition process are considered as a unique feature in glass since a wide range unachievable in other luminescent materials.