Indonesian Journal of Electrical Engineering and Computer Science
Vol 28, No 2: November 2022

Green-phosphor Ca3Sc2Si3O12:Ce3+ for solid-status illumination: gel-combustion structural and luminous characteristics

Huu Phuc Dang (Ho Chi Minh City)
Bui Van Hie (Van Lang University)
Nguyen Le Thai (Nguyen Tat Thanh University)



Article Info

Publish Date
01 Nov 2022

Abstract

Ca3Sc2Si3O12:Ce3+ phosphors with one stage and tiny dimension were effectively produced utilizing the gel-combustion technique at a lower heat (1100◦C) than the traditional solid-status reaction technique (around 1500◦C). The phosphors' crystal phase and microstructure, as well as their luminescence, were studied. The particle size is around 1m, which is significantly smaller than what the solid-status process produces. When particles are combined of silicon and deposited on a blue light-emitting diode (LED), finer particles can minimize interior diffusing. A significant green radiation is noticed that is caused by typical Ce3+ transition radiations 5d–2F5/2 and 5d–2F7/2. The stimulation spectra reveal a wide and high absorptivity at around 460 nm, indicating that it would be an excellent color conversion in white LEDs. The gel-combustion phosphor has a decay period of 54.65 ns.

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