A novel n‐UV convertible colour‐tunable emitting oxynitride phosphor: Realization based on Ce³⁺‐Tb³⁺ energy transfer

In the present work, a novel n‐UV convertible colour‐tunable emitting phosphor was obtained based on the efficient Ce 3+ ‐Tb 3+ energy transfer in the Y 10 Al 2 Si 3 O 18 N 4 host. By properly controlling the ratio of Ce 3+ /Tb 3+ , the colour hue of the obtained powder covered the blue and green regions, under excitation of 365 nm. The steady‐state and dynamic‐state luminescence measurement was performed to shed light on the related mechanism, which was justified by the electronic dipole–quadrupole dominating the related energy transfer process. Preliminary studies showed that Y 10 Al 2 Si 3 O 18 N 4 :Ce 3+ ,Tb 3+ can be promising as an inorganic phosphor for white LED applications.