Effect of Partial Ca2+ Substitution with Ln3+ (Ln = Y, La) on Luminescence Enhancement of Ca18.62Zn2(PO4)14:0.38Dy3+ White-Emitting Phosphor for White Light-Emitting Diodes
Abstract:A sequence of white-emitting Ca18.62–x
Ln
x
Zn2(PO4)14:0.38Dy3+ (Ln = Y, La) phosphors
were synthesized by a high-temperature solid-phase method. The luminescence
enhancement of Ca18.62–x
Ln
x
Zn2(PO4)14:0.38Dy3+ phosphors via Ln3+ partial
substitution was investigated. Since Ln3+ and Ca2+ ions have similar ionic radii, XRD results showed that Ln3+ could enter into the lattice without changing the host structure
and the luminescence performance was further enhanced by affecting
the lattice environment arou… Show more
“…Always, the luminescence performance of phosphors, especially intensity, should be further modified to meet the aim of practical applications. 34 Furthermore, the incorporation of alkali metal ions as charge compensators could eliminate the crystal defects caused by the unbalanced substitution of trivalent Sm 3+ for divalent Ca 2+ . [35][36][37] Hence, it is significant to investigate the luminescence properties of the C 5 PSO:Sm 3+ ,A + orange phosphor for w-LEDs.…”
The orange-emitting Ca5-x(PO4)2SiO4:xSm3+ (C5PSO:Sm3+) phosphor was prepared via a simple solid-state method, and the charge compensators A+ (A = Li, Na and K) was codoped into C5PSO:Sm3+ for improving the...
“…Always, the luminescence performance of phosphors, especially intensity, should be further modified to meet the aim of practical applications. 34 Furthermore, the incorporation of alkali metal ions as charge compensators could eliminate the crystal defects caused by the unbalanced substitution of trivalent Sm 3+ for divalent Ca 2+ . [35][36][37] Hence, it is significant to investigate the luminescence properties of the C 5 PSO:Sm 3+ ,A + orange phosphor for w-LEDs.…”
The orange-emitting Ca5-x(PO4)2SiO4:xSm3+ (C5PSO:Sm3+) phosphor was prepared via a simple solid-state method, and the charge compensators A+ (A = Li, Na and K) was codoped into C5PSO:Sm3+ for improving the...
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