Green-emitting YBO3:Ce3+,Tb3+ phosphor photoluminescence characteristics for close UV stimulation

Ho Minh Trung, My Hanh Nguyen Thi, Nguyen Le Thai


Through a solid state process, YBO3:Ce3+,Tb3+ was created via rare earth oxides along with boric acid. The phosphor absorbs close-ultraviolet illumination through the transitions 4f-5d of Ce3+, then emits a wide spectrum of light through the transitions 5d-4f of Ce3+ and a sharp spectrum of light through the transitions 4f-4f of Tb3+. Nonradioactive power transmission between Ce3+ and Tb3+ has been seen in samples with varying amounts of Ce3+ and Tb3+ using spectroscopic analysis. The quantities of Ce3+ as well as Tb3+ decides the hue for the YBO3:Ce3+,Tb3+ emission, ranging between blue and green. The Y0.82Ce0.03Tb0.15BO3 phosphor, which emits green light when optimized, has an exterior quantum effectiveness of 76.7% and an emission color of (0.309, 0.547). This phosphor's luminescence strength maintains 87% of its strength at ambient temperature, demonstrating enough heat stability for white illumination emitting diode implementations.


Color homogeneity; Double-layer phosphor; Luminous flux; Monte carlo theory; WLEDs

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The Indonesian Journal of Electrical Engineering and Computer Science (IJEECS)
p-ISSN: 2502-4752, e-ISSN: 2502-4760
This journal is published by the Institute of Advanced Engineering and Science (IAES) in collaboration with Intelektual Pustaka Media Utama (IPMU).

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