Novel La3GaGe5O16 : Mn4+based deep red phosphor: a potential color converter for warm white light

RSC Advances ◽  
2015 ◽  
Vol 5 (110) ◽  
pp. 90499-90507 ◽  
Author(s):  
Shaoan Zhang ◽  
Yihua Hu ◽  
He Duan ◽  
Li Chen ◽  
Yinrong Fu ◽  
...  
Keyword(s):  
Activation Energy ◽  
White Light ◽  
Thermal Quenching ◽  
Temperature Dependent ◽  
Quenching Temperature ◽  
Red Phosphor ◽  
Warm White Light ◽  
Relative Emission Intensity ◽  
Insight Into ◽  
Color Converter

We gained insight into the temperature-dependent relative emission intensity of La3GaGe5O16: Mn4+phosphor, and the luminescence quenching temperature and the activation energy for thermal quenching (ΔE) were obtained.

Temperature dependent optical properties of red emitting Na3GaF6:Mn4+ as a color converter for warm white LEDs

2018 ◽  
Vol 233 (7) ◽  
pp. 489-499 ◽  
Author(s):  
David Böhnisch ◽  
Thomas Jansen ◽  
Rainer Pöttgen ◽  
Thomas Jüstel
Keyword(s):  
Optical Properties ◽  
Calculated Data ◽  
Thermal Quenching ◽  
High Quantum Yield ◽  
Temperature Dependent ◽  
Red Phosphor ◽  
White Leds ◽  
Racah Parameters ◽  
Color Converter ◽  
Red Emitting Phosphor

Abstract This work presents and disentangles the temperature dependent optical properties of the red-emitting phosphor Na3GaF6:Mn4+. Moreover, crystal field and Racah parameters were investigated. It was proven that the material is suitable for the application in warm white LEDs due to its high quantum yield of about 83%, little thermal quenching of the photoluminescence up to 410 K, high lumen equivalent of about 220 lm/W, and strong absorption at 450 nm. In addition, different DFT approaches were used to investigate its band structure. The calculated data were compared to those obtained experimentally. Red phosphor spectra were calculated to evaluate the suitability of red line-emitting phosphors for the application in warm white emitting pcLEDs. Finally, warm white emitting LEDs comprising Na3GaF6:Mn4+ were constructed in order to show the potential of Na3GaF6:Mn4+ serving as a red component in phosphor blends for future warm white pcLEDs.

A green synthetic route to the highly efficient K2SiF6:Mn4+narrow-band red phosphor for warm white light-emitting diodes

2018 ◽  
Vol 6 (11) ◽  
pp. 2741-2746 ◽  
Author(s):  
Ziyang Hou ◽  
Xueyuan Tang ◽  
Xuefang Luo ◽  
Tianliang Zhou ◽  
Lin Zhang ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Narrow Band ◽  
Synthetic Route ◽  
Red Phosphor ◽  
Light Emitting ◽  
Highly Efficient ◽  
Warm White Light ◽  
White Light Emitting Diodes

A green synthetic route to the highly efficient K2SiF6:Mn4+narrow-band red phosphor for warm white light-emitting diodes.

Novel Mn4+-activated layered oxide-fluoride perovskite-type KNaMoO2F4 red phosphor for wide gamut warm white light-emitting diodes backlight

2021 ◽  
Author(s):  
Jiao Wu ◽  
Bo Wang ◽  
Zhiyuan Liu ◽  
Kang Zhang ◽  
Xiaoshuang Li ◽  
...  
Keyword(s):  
Solid State ◽  
White Light ◽  
Light Emitting Diodes ◽  
Solid State Lighting ◽  
Red Phosphor ◽  
Red Emission ◽  
Light Emitting ◽  
Warm White Light ◽  
White Light Emitting Diodes ◽  
Perovskite Type

Mn4+-activated oxidefluoride phosphors are attractive for application in wide solid-state lighting devices because of its distinct red emission at about 630 nm and the abundant storage of Mn4+ ion. However,...

Significantly conquering moisture-induced luminescence quenching of red line-emitting phosphor Rb2SnF6:Mn4+ through H2C2O4 triggered particle surface reduction for blue converted warm white light-emitting diodes

2019 ◽  
Vol 7 (2) ◽  
pp. 247-255 ◽  
Author(s):  
Chunyan Jiang ◽  
Mikhail G. Brik ◽  
Alok M. Srivastava ◽  
Lihua Li ◽  
Mingying Peng
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Particle Surface ◽  
Luminescence Quenching ◽  
Red Phosphor ◽  
Light Emitting ◽  
Reduction Treatment ◽  
Surface Reduction ◽  
Warm White Light ◽  
White Light Emitting Diodes

A highly stable red phosphor Rb2SnF6:Mn4+ is achieved by appropriate reduction treatment using a low concentration of H2C2O4.

Novel polygonal structure Mn4+ activated In3+-based Elpasolite-type hexafluorides red phosphor for warm white light-emitting diodes (WLEDs)

2019 ◽  
Vol 48 (4) ◽  
pp. 1376-1385 ◽  
Author(s):  
Feng Hong ◽  
Haiming Cheng ◽  
Chao Song ◽  
Guixia Liu ◽  
Wensheng Yu ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Synthetic Methods ◽  
Red Phosphor ◽  
Light Emitting ◽  
White Leds ◽  
Red Phosphors ◽  
Polygonal Structure ◽  
Warm White Light ◽  
White Light Emitting Diodes

Red phosphors (NH4)2NaInF6:Mn4+ with controllable morphology were synthesized via different synthetic methods, which can be fabricated for warm white LEDs.

ChemInform Abstract: Highly Efficient Red Phosphor Cs2GeF6:Mn4+for Warm White Light-Eemitting Diodes.

ChemInform ◽  
2015 ◽  
Vol 46 (50) ◽  
pp. no-no
Author(s):  
Zhengliang Wang ◽  
Yayun Zhou ◽  
Yong Liu ◽  
Qiang Zhou ◽  
Lijun Luo ◽  
...  
Keyword(s):  
White Light ◽  
Red Phosphor ◽  
Highly Efficient ◽  
Warm White Light
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