Enhancing luminescence intensity and improving thermostability of red phosphors Li3Ba2La3(WO4)8:Eu3+ by co-doping with Sm3+ ions

2022 ◽  
Vol 891 ◽  
pp. 161973
Author(s):  
Shao-Jie Dai ◽  
Dan Zhao ◽  
Rui-Juan Zhang ◽  
Lei Jia ◽  
Qing-Xia Yao
Keyword(s):  
Luminescence Intensity ◽  
Co Doping ◽  
Red Phosphors

Synthesis and luminescence enhancement of CaY0.6(MoO4)1.9:Eu3+ red phosphors by Sm3+ co-doping

2020 ◽  
Author(s):  
Sangang Lou ◽  
Peicong Zhang ◽  
Yu Chen ◽  
Qiang Xiong ◽  
Kehui Qiu
Keyword(s):  
Luminescence Enhancement ◽  
Co Doping ◽  
Red Phosphors

Synthesis and photoluminescence enhancement of Ca3Sr3(VO4)4:Eu3+ red phosphors by co-doping with La3+

2018 ◽  
Vol 44 (6) ◽  
pp. 6192-6200 ◽  
Author(s):  
Qinxue Tang ◽  
Yangting Wu ◽  
Kehui Qiu ◽  
Wentao Zhang ◽  
Junlan Wang
Keyword(s):  
Co Doping ◽  
Red Phosphors ◽  
Photoluminescence Enhancement

Optimized photoluminescence of red phosphor K2TiF6:Mn4+synthesized at room temperature and its formation mechanism

2015 ◽  
Vol 3 (9) ◽  
pp. 1935-1941 ◽  
Author(s):  
Lifen Lv ◽  
Zhen Chen ◽  
Guokui Liu ◽  
Shaoming Huang ◽  
Yuexiao Pan
Keyword(s):  
Formation Mechanism ◽  
Luminescence Intensity ◽  
Room Temperature ◽  
Synthetic Process ◽  
Red Phosphor ◽  
White Leds ◽  
Red Phosphors ◽  
Color Rendering

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.

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

Open Physics ◽  
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.

Effects of charge compensator Li+ co-doping on the structure and luminescence properties of Cd2V2O7:Eu3+ red phosphors

2018 ◽  
Vol 44 (8) ◽  
pp. 9534-9539 ◽  
Author(s):  
Wentao Zhang ◽  
Guilin Yan ◽  
Siyi Dai ◽  
Peicong Zhang ◽  
Qingdong Zhao ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Co Doping ◽  
Red Phosphors ◽  
Charge Compensator

Color Locating of Ce3+ and Eu2+ Doped Calcium Magnesium Chlorosilicate UV-LED Phosphors

2011 ◽  
Vol 216 ◽  
pp. 16-20 ◽  
Author(s):  
Quan Shen ◽  
Man Man Lu ◽  
Hai Lin ◽  
Chang Min Li
Keyword(s):  
Green Emission ◽  
Mixed Effect ◽  
Co Doping ◽  
Red Phosphors ◽  
Uv Led ◽  
Bluish Green ◽  
Calcium Magnesium ◽  
Co Doped ◽  
Luminescence Color ◽  
The Ideal

Color coordinates (0.1573, 0.0528) and (0.1542, 0.4663) have been identified in Ce3+and Eu2+singly doped calcium magnesium chlorosilicate (CMSC) phosphors, which present the purplish-blue and green lights under ultraviolet (UV) radiation, respectively. In Ce3+/Eu2+co-doped CMSC phosphors, with sensitizing the green emission of Eu2+, Ce3+co-doping changed the luminescence color from green to bluish-green, presenting a preferable mixed effect from two primary colors. Potential mixture of red phosphors will provide the possibility in achieving the ideal white fluorescence under UV-LED excitation.

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