Improved luminescence properties of a novel red dodec-fluoride phosphor Ba3Sc2F12:Mn4+ with extraordinary thermal stability for WLED application

2020 ◽  
Vol 8 (18) ◽  
pp. 6299-6305
Author(s):  
Xinlong Dong ◽  
Yuexiao Pan ◽  
Yajun Jia ◽  
Rongjing Liu ◽  
Hongzhou Lian ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Luminescence Intensity ◽  
Room Temperature ◽  
Luminescence Properties ◽  
Red Phosphor ◽  
White Leds

A red phosphor, Ba3Sc2F12:Mn4+, with extraordinary thermal stability and for application in “warm” white LEDs for backlighting, was obtained at room temperature and its luminescence intensity has been improved by optimizing its synthetic parameters.

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.

A novel double-perovskite Gd2ZnTiO6:Mn4+red phosphor for UV-based w-LEDs: structure and luminescence properties

2016 ◽  
Vol 4 (12) ◽  
pp. 2374-2381 ◽  
Author(s):  
Hui Chen ◽  
Hang Lin ◽  
Qingming Huang ◽  
Feng Huang ◽  
Ju Xu ◽  
...  
Keyword(s):  
Double Perovskite ◽  
Luminescence Properties ◽  
Red Phosphor ◽  
White Leds

This work highlights a novel double-perovskite red phosphor Gd2ZnTiO6:Mn4+for UV-based warm white LEDs.

Room-temperature synthesis and warm-white LED applications of Mn4+ ion doped fluoroaluminate red phosphor Na3AlF6:Mn4+

2016 ◽  
Vol 4 (13) ◽  
pp. 2480-2487 ◽  
Author(s):  
E. H. Song ◽  
J. Q. Wang ◽  
S. Ye ◽  
X. F. Jiang ◽  
M. Y. Peng ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Room Temperature ◽  
White Led ◽  
Color Purity ◽  
Step Method ◽  
Temperature Synthesis ◽  
Red Phosphor ◽  
Room Temperature Synthesis ◽  
Good Thermal Stability ◽  
High Color Purity

An intense red fluoroaluminate phosphor, cryolite Na3AlF6:Mn4+, with high color purity and good thermal stability has been designed and synthesized via a facile two-step method at room temperature.

Synthesis and improved photoluminescence of hexagonal crystals of Li2ZrF6:Mn4+ for warm WLED application

2018 ◽  
Vol 47 (46) ◽  
pp. 16516-16523 ◽  
Author(s):  
Lei Zhang ◽  
Luqing Xi ◽  
Yuexiao Pan ◽  
Yajun Jia ◽  
Mingmei Wu ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Luminescence Intensity ◽  
Room Temperature ◽  
Exchange Method ◽  
Red Phosphor ◽  
Ion Exchange Method ◽  
First Time ◽  
Hexagonal Crystals

A novel red phosphor Li2ZrF6:Mn4+ being promising for application in WLEDs has been synthesized for the first time by the ion-exchange method at room temperature, and its luminescence intensity has been optimized.

scholarly journals Luminescence properties, energy transfer and thermal stability of white emitting phosphor Sr3(PO4)2:Ce3+/Tb3+/Mn2+ for white LEDs

RSC Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 420-428
Author(s):  
Yingshan Ma ◽  
Suyue Fu ◽  
Yichang Zhao ◽  
Chunjiao Liu ◽  
Leipeng Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Energy Transfer ◽  
Luminescence Properties ◽  
White Leds ◽  
Thermal Stability Of ◽  
Tunable Emission

The tunable emission phosphor was realized by the energy transfer.

Abnormal site occupancy and high performance in warm WLEDs of a novel red phosphor, NaHF2:Mn4+, synthesized at room temperature

2017 ◽  
Vol 46 (40) ◽  
pp. 13835-13844 ◽  
Author(s):  
Luqing Xi ◽  
Yuexiao Pan ◽  
Mengmeng Zhu ◽  
Hongzhou Lian ◽  
Jun Lin
Keyword(s):  
Alkali Metal ◽  
Metal Ions ◽  
High Performance ◽  
Room Temperature ◽  
Site Occupancy ◽  
Luminescence Properties ◽  
Alkali Metal Ions ◽  
Red Phosphor ◽  
Red Phosphors ◽  
Novel Strategy

A novel red phosphor, NaHF2:Mn4+, was obtainedviasubstituting Na+located at the center of the octahedron with Mn4+. This work provides a novel strategy to develop novel Mn4+doped red phosphors with controlled luminescence properties by substituting for alkali metal ions.

Combustion synthesis and luminescence properties of Ca4Y6(SiO4)6O:Eu3+ red phosphor for white LEDs

2013 ◽  
Vol 31 (10) ◽  
pp. 957-961 ◽  
Author(s):  
Zhihua SUN ◽  
Minqiang WANG ◽  
Xiaohui SONG ◽  
Ziqiang JIANG
Keyword(s):  
Combustion Synthesis ◽  
Luminescence Properties ◽  
Red Phosphor ◽  
White Leds

Luminescence Properties of Rare-Earth Doped α-SiAlONs

2006 ◽  
Vol 317-318 ◽  
pp. 797-802
Author(s):  
Rong Jun Xie ◽  
Mamoru Mitomo ◽  
Naoto Hirosaki
Keyword(s):  
Rare Earth ◽  
Rare Earths ◽  
Room Temperature ◽  
Luminescence Properties ◽  
Activator Concentration ◽  
Photoluminescence Properties ◽  
Host Crystal ◽  
Emission Properties ◽  
White Leds ◽  
Rare Earth Doped

Rare-earth doped Ca-α-SiAlON phosphors, with the compositions of (Ca1-3/2xREx)m/2Si12-m-nAlm+nOnN16-n (RE = Ce, Sm, Eu, Tb, Yb and Dy, 0.5 ≤ m = 2n ≤ 3.0), were prepared by reaction at 1700oC for 2h under 10 atm N2. The concentration of rare earths varied from 3 to 30 at% with respect to Ca. The photoluminescence properties of the powders were investigated at room temperature. The results show that (i) strong visible emissions are observed in rare-earth doped Ca-α-SiAlONs; (ii) the emission properties can be optimized by tailoring the activator concentration and the composition of the α-SiAlON host crystal; and (iii) the yellow Eu2+-doped Ca-α-SiAlON phosphors can be used in warm white LEDs.

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