Effects of host composition, Al3+ as a sensitizer and SiO2 surface coating on luminescence intensity, color purity of MVO4: Al3+, Eu3+ @ SiO2 (M = Gd, Y and Gd/Y) red phosphors

The formation mechanism for red phosphors K2TiF6:Mn4+synthesized at room temperature has been discussed. The luminescence intensity has been improved by optimizing the synthetic process. Encapsulation of the red phosphor K2TiF6:Mn4+with YAG:Ce on a GaN layer produces “warm” white LEDs with color rendering 86 at 3251 K.

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A novel inequivalent double-site substituted red phosphor Li4AlSbO6:Mn4+ with high color purity: Structure, photoluminescence properties, and application in warm white LEDs

Journal of Materials Chemistry C ◽

10.1039/d1tc02541d ◽

2021 ◽

Author(s):

Zhiyuan Li ◽

Xuhui Zhang ◽

Ji Wu ◽

Rui Guo ◽

Lan Luo ◽

...

Keyword(s):

Rare Earth ◽

Spectral Properties ◽

Light Emitting Diode ◽

Color Purity ◽

Photoluminescence Properties ◽

Red Phosphor ◽

Light Emitting ◽

White Leds ◽

Red Phosphors ◽

High Color Purity

Non-rare-earth Mn4+-doped oxide red phosphors received increasing attention in the white light-emitting diode (LED) field for their admirable chemical stability and spectral properties. Here, a new inequivalent double-site substituted Mn4+-doped...

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Enhancement of luminescence intensity and color purity of MgxZn1–xMoO4:Eu3+,Bi3+ phosphors

Journal of Rare Earths ◽

10.1016/s1002-0721(14)60527-5 ◽

2015 ◽

Vol 33 (10) ◽

pp. 1064-1071 ◽

Cited By ~ 13

Author(s):

Fuwang MO ◽

Peican CHEN ◽

Anxiang GUAN ◽

Wei ZHANG ◽

Liya ZHOU

Keyword(s):

Luminescence Intensity ◽

Color Purity

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Synthesis and photoluminescence properties of MZr2(PO4)3:Eu3+; Bi3+ (M=Na; K) phosphors

Open Physics ◽

10.2478/s11534-012-0014-2 ◽

2012 ◽

Vol 10 (2) ◽

Author(s):

Xipu He ◽

Junli Huang ◽

Liya Zhou ◽

Qi Pang ◽

Fuzhong Gong

Keyword(s):

Luminescence Intensity ◽

Emission Spectra ◽

Concentration Quenching ◽

Excitation Band ◽

Photoluminescence Spectra ◽

Photoluminescence Properties ◽

Red Emission ◽

Reaction Method ◽

Red Phosphors ◽

Pl Intensity

AbstractA series of new red phosphors, MZr2(PO4)3:Eu3+; Bi3+ (M=Na; K), were synthesized using the solidstate reaction method, and their photoluminescence spectra were measured. The MZr2(PO4)3:Eu3+; Bi3+ (M=Na; K) phosphors were efficiently excited by an ultraviolet (UV; 395 nm) source, and showed intense orange-red emission at 595 nm. Further investigation of the concentration-dependent emission spectra indicated that the MZr2(PO4)3:Eu3+; Bi3+ (M=Na; K) phosphors exhibit the strongest luminescence intensity when y = 0.01 in NaZr2(0:95−y)(PO4)3:Eu0.103+, Bi2y 3+ and y = 0.09 in NaZr2(0.95−y)(PO4)3:Eu0.103+, Bi2y 3+, whereas the relative PL intensity decreases with increasing Bi3+ concentration due to concentration quenching. The addition of Bi3+ widens the excitation band of NaZr2(0.95−y)(PO4)3:Eu0.103+, Bi2y 3+ around 320 nm, which provides the useful idea of broadening the excitation band around 300–350 nm to fit the ultraviolet chip.

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