Luminescence Properties of Ba3Si6O12 N2:Eu2+ Green Phosphor
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To fabricate white LED having a high color rendering index value, red color phosphor mixed with the green color phosphor together in the blue chip, namely the blue chips with RG phosphors packaging is most favorable for high power white LEDs. In our previous papers, we reported on successful syntheses of Sr2- Si5N8:Eu2+ and CaAlSiN3 phosphors for red phosphor. In this work, for high power green phosphor, greenemitting ternary nitride Ba3Si6O12N2:Eu2+ phosphor was synthesized in a high frequency induction furnace under N2 gas atmosphere at temperatures up to 1400oC using EuF3 as a raw material for Eu2+dopant. The effects of molar ratio of component and experimental conditions on luminescence property of prepared phosphors have been investigated. The structure and luminescence properties of prepared Ba3Si6O12N2:Eu2+ phosphors were investigated by XRD and photoluminescence spectroscopy. The excitation spectra of Ba3Si6O12N2:Eu2+ phosphors indicated broad excitation wavelength range of 250 - 500 nm, namely from UV to blue region with distinct enhanced emission spectrum peaking at ≈ 530 nm.
Abstract
To fabricate white LED having a high color rendering index value, red color phosphor mixed with the green color phosphor together in the blue chip, namely the blue chips with RG phosphors packaging is most favorable for high power white LEDs. In our previous papers, we reported on successful syntheses of Sr2- Si5N8:Eu2+ and CaAlSiN3 phosphors for red phosphor. In this work, for high power green phosphor, greenemitting ternary nitride Ba3Si6O12N2:Eu2+ phosphor was synthesized in a high frequency induction furnace under N2 gas atmosphere at temperatures up to 1400oC using EuF3 as a raw material for Eu2+dopant. The effects of molar ratio of component and experimental conditions on luminescence property of prepared phosphors have been investigated. The structure and luminescence properties of prepared Ba3Si6O12N2:Eu2+ phosphors were investigated by XRD and photoluminescence spectroscopy. The excitation spectra of Ba3Si6O12N2:Eu2+ phosphors indicated broad excitation wavelength range of 250 - 500 nm, namely from UV to blue region with distinct enhanced emission spectrum peaking at ≈ 530 nm.
참고문헌 (13)
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