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A series of Eu2+-doped ternary nitride phosphors, with a formula of(Sr1-xCax)2Si5N8:Eu2+, were synthesized by high-temperature solid-state method.The structure and luminescence properties were characterized, indicating the potential application as a red phosphor in the phosphor-converted white light-emitting diodes.The X-ray diffraction patterns showed that the Sr2Si5N8 and Ca2Si5N8 phases were generated at each end of(Sr1-xCax)2Si5N8:Eu2+ and coexisted in the range of 0.5≤x≤0.75.The emission spectra showed broad emission bands originating from the 4f65d1→4f7 transition of Eu2+ ions.The emission peak changed with the variations in Ca2+ concentration.
A series of Eu2 + -doped ternary nitride phosphors, with a formula of (Sr1-xCax) 2Si5N8: Eu2 +, were synthesized by high-temperature solid-state method. Structure and luminescence properties were, indicating the potential application as a red phosphor in the phosphor-converted white light-emitting diodes. The X-ray diffraction patterns showed that the Sr2Si5N8 and Ca2Si5N8 phases were generated at each end of (Sr1-xCax) 2Si5N8: Eu2 + and coexisted in the range of 0.5≤x≤0.75. The emission spectra showed broad emission bands originating from 4f65d1 → 4f7 transition of Eu2 + ions. The emission peak changed with the variations in Ca2 + concentration.