scholarly journals The electronic and optical properties of a narrow-band red-emitting nanophosphor K2NaGaF6:Mn4+for warm white light-emitting diodes

2018 ◽  
Vol 6 (12) ◽  
pp. 3016-3025 ◽  
Author(s):  
Chunyan Jiang ◽  
Mikhail G. Brik ◽  
Lihua Li ◽  
Liyi Li ◽  
Jie Peng ◽  
...  
Keyword(s):  
Optical Properties ◽  
White Light ◽  
Light Emitting Diodes ◽  
Narrow Band ◽  
High Quality ◽  
Light Emitting ◽  
Electronic And Optical Properties ◽  
White Leds ◽  
Warm White Light ◽  
White Light Emitting Diodes

Here, we report a narrow band but efficient red nanophosphor K2NaGaF6:Mn4+for high quality warm white LEDs.

Synthesis of narrow-band red-emitting K2SiF6:Mn4+ phosphors for a deep red monochromatic LED and ultrahigh color quality warm-white LEDs

2015 ◽  
Vol 3 (3) ◽  
pp. 607-615 ◽  
Author(s):  
Ji Hye Oh ◽  
Heejoon Kang ◽  
Yun Jae Eo ◽  
Hoo Keun Park ◽  
Young Rag Do
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Narrow Band ◽  
Light Emitting ◽  
White Leds ◽  
Color Quality ◽  
Warm White Light ◽  
White Light Emitting Diodes

In this study, we synthesized and characterized narrow-band red-emitting K2SiF6:Mn4+ phosphors in order to improve the color qualities of warm white light-emitting diodes (LEDs).

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.

Three-dimensional GaN dodecagonal ring structures for highly efficient phosphor-free warm white light-emitting diodes

Nanoscale ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 4686-4695 ◽  
Author(s):  
Young Chul Sim ◽  
Seung-Hyuk Lim ◽  
Yang-Seok Yoo ◽  
Min-Ho Jang ◽  
Sunghan Choi ◽  
...  
Keyword(s):  
White Light ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Three Dimensional ◽  
Light Emitting ◽  
White Leds ◽  
Highly Efficient ◽  
Warm White Light ◽  
Ring Structures ◽  
White Light Emitting Diodes

Multifaceted dodecagonal ring structures emit light of various colours with high efficiency and are demonstrated to be phosphor-free white LEDs.

Bandgap trimming and optical properties of Si3N4:Al microbelt phosphors for warm white light-emitting diodes

CrystEngComm ◽  
2019 ◽  
Vol 21 (43) ◽  
pp. 6566-6573
Author(s):  
Dongyi Shen ◽  
Yiran Shao ◽  
Yingchun Zhu
Keyword(s):  
Optical Properties ◽  
Solid State ◽  
White Light ◽  
Light Emitting Diodes ◽  
Bandgap Energy ◽  
Light Emitting ◽  
Warm White Light ◽  
Yellow Orange ◽  
White Light Emitting Diodes ◽  
Blue Chip

The bandgap energy of Si3N4:Al is precisely and gradually tailored from 2.58 to 2.85 eV by increasing the Al concentration. Si3N4:Al:Eu phosphors exhibiting a yellow-orange emission are promising for solid-state warm white lighting under blue chip excitation.

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.

Eu2+-activated full color orthophosphate phosphors for warm white light-emitting diodes

RSC Advances ◽  
2014 ◽  
Vol 4 (62) ◽  
pp. 33114-33119 ◽  
Author(s):  
Chenglong Zhao ◽  
Zhiguo Xia ◽  
Molin Li
Keyword(s):  
White Light ◽  
Potential Application ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
White Leds ◽  
Full Color ◽  
Warm White Light ◽  
White Light Emitting Diodes

Eu2+-activated full-color versatile orthophosphate phosphors can find potential application in warm white LEDs.

scholarly journals A broadband cyan-emitting Ca2LuZr2(AlO4)3:Ce3+ garnet phosphor for near-ultraviolet-pumped warm-white light-emitting diodes with an improved color rendering index

2020 ◽  
Vol 8 (3) ◽  
pp. 1095-1103 ◽  
Author(s):  
Liangling Sun ◽  
Balaji Devakumar ◽  
Jia Liang ◽  
Shaoying Wang ◽  
Qi Sun ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Emission Spectra ◽  
Light Emitting ◽  
White Leds ◽  
Near Ultraviolet ◽  
Warm White Light ◽  
Color Rendering Index ◽  
White Light Emitting Diodes ◽  
Color Rendering

Broadband cyan-emitting Ca2LuZr2(AlO4)3:Ce3+ garnet phosphors enabled to fill the cyan gap in the emission spectra of near-ultraviolet-pumped warm-white LEDs, thus resulting in improved color rendering index.

scholarly journals Implementation of High-Quality Warm-White Light-Emitting Diodes by a Model-Experimental Feedback Approach Using Quantum Dot–Salt Mixed Crystals

2015 ◽  
Vol 7 (41) ◽  
pp. 23364-23371 ◽  
Author(s):  
Marcus Adam ◽  
Talha Erdem ◽  
Gordon M. Stachowski ◽  
Zeliha Soran-Erdem ◽  
Josephine F. L. Lox ◽  
...  
Keyword(s):  
Quantum Dot ◽  
White Light ◽  
Light Emitting Diodes ◽  
Mixed Crystals ◽  
High Quality ◽  
Light Emitting ◽  
Warm White Light ◽  
White Light Emitting Diodes

Electronic and optical properties of a novel fluoroaluminate red phosphor Cs2NaAl3F12:Mn4+ with high color purity for white light-emitting diodes

2019 ◽  
Vol 48 (33) ◽  
pp. 12459-12465 ◽  
Author(s):  
Zibo Liang ◽  
Zhaofeng Yang ◽  
Xiaoling Xie ◽  
Haiqi Pu ◽  
Dongxin Shi ◽  
...  
Keyword(s):  
Optical Properties ◽  
White Light ◽  
Light Emitting Diodes ◽  
Color Purity ◽  
Red Phosphor ◽  
Light Emitting ◽  
Electronic And Optical Properties ◽  
White Light Emitting Diodes ◽  
High Color Purity ◽  
Potential Use

The red Cs2NaAl3F12:Mn4+ phosphor with intense ZPL emission was obtained via the occupation of Mn4+ for Al3+, indicating its high colour purity and potential use in WLEDs.

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