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Synthesize and evaluate Eu2+-doped and Eu2+/Mn2+-codoped Ba1.3Ca0.7SiO4 phosphors to investigate their energy transfer kinetics and suitability for near-ultraviolet white LEDs.

September 26, 2014Inorganic Chemistry

Ba1.3Ca0.7SiO4:Eu2+,Mn2+: A Promising Single-Phase, Color-Tunable Phosphor for Near-Ultraviolet White-Light-Emitting Diodes

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Synthesize and evaluate Eu2+-doped and Eu2+/Mn2+-codoped Ba1.3Ca0.7SiO4 phosphors to investigate their energy transfer kinetics and suitability for near-ultraviolet white LEDs.
Synthesized single-phase phosphors via a conventional high-temperature solid-state reaction method.
Verified crystal structure and phase purity using powder X-ray diffraction and Rietveld refinement analysis.
Characterized photoluminescence properties and energy transfer behavior under 390 nm near-ultraviolet excitation across varying Mn2+ concentrations.
Eu2+ doping yielded a broad emission band centered at 500 nm, whereas adding Mn2+ introduced a complementary emission band at 600 nm via dipole-quadrupole resonant energy transfer.
Phosphor emission colors transitioned smoothly from blue to red as Mn2+ content increased, accompanied by a substantial red shift of the Mn2+ peak from 593 to 620 nm due to crystal field modulation and Mn2+ pairing.

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Implication

Experimental study demonstrates tunable emission via Eu2+ to Mn2+ energy transfer in Ba1.3Ca0.7SiO4 phosphors, highlighting their utility for near-ultraviolet white LEDs.

Cite This Study

Lv et al. (2014) studied this question.

synapsesocial.com/papers/6a974f2f70178b60dd7fd341 https://doi.org/10.1021/ic501423p

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Implication

Experimental study demonstrates tunable emission via Eu2+ to Mn2+ energy transfer in Ba1.3Ca0.7SiO4 phosphors, highlighting their utility for near-ultraviolet white LEDs.

Ba1.3Ca0.7SiO4:Eu2+,Mn2+: A Promising Single-Phase, Color-Tunable Phosphor for Near-Ultraviolet White-Light-Emitting Diodes

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Discussion

Implication

Cite This Study

Ba1.3Ca0.7SiO4:Eu2+,Mn2+: A Promising Single-Phase, Color-Tunable Phosphor for Near-Ultraviolet White-Light-Emitting Diodes

Key Points

Discussion

Implication

Cite This Study

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