Oxygen-vacancy rich in melilite to modulate the persistent luminescence for multi-functional applications

Due to the simplicity of vacancy creation, Eu2+-doped melilite is an outstanding persistent luminescence (PersL) material with a continuing glow lifetime of more than several hours. In this paper, we propose a novel technique for activating a long-lasting phosphor (LLP) via oxygen-vacancy-rich Ca2MgSi2O7:Eu2+ (V-O-CMSE), which shows that more V-O defects activate the persistent luminescence of Eu2+. V-O-CMSE has a long duration and high charge storage capacity, allowing it to perform efficiently in a variety of applications. Consequently, the intensity of V-O-CMSE is enhanced, which has been demonstrated to be useful in compensating for the flicker effect of AC-LEDs (alternating current light-emitting diodes). A new approach for generating white light emission during dimming time was presented, and an AC-LED lamp with a flicker percentage drop of 29.9% was manufactured. Dynamic anti-counterfeiting applications were also presented. These discoveries are likely to hasten the development of new LLP materials.

Automated summary

In this paper, a novel technique for activating a long-lasting phosphor (LLP) via oxygen-vacancy-rich Ca2MgSi2O7:Eu2+ (V-O-CMSE) is proposed, which enhances the persistent luminescence of Eu2+. V-O-CMSE exhibits a long duration and high charge storage capacity, making it efficient for various applications. The intensity of V-O-CMSE is enhanced and can compensate for the flicker effect of AC-LEDs. A new approach for generating white light emission during dimming time is presented, and an AC-LED lamp with a flicker percentage drop of 29.9% is manufactured. Dynamic anti-counterfeiting applications are also demonstrated. These discoveries are likely to accelerate the development of new LLP materials.