Full‐Color Chemically Modulated g‐C 3 N 4 for White‐Light‐Emitting Device

2019 ◽  
Vol 7 (21) ◽  
pp. 1900775 ◽  
Author(s):  
Qianyi Guo ◽  
Minchen Wei ◽  
Zekun Zheng ◽  
Xiongjian Huang ◽  
Xiaoqian Song ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting ◽  
Full Color

Tunable full-color-emitting La0.827Al11.9O19.09:Eu2+,Mn2+ phosphor for application to warm white-light-emitting diodes

2006 ◽  
Vol 89 (23) ◽  
pp. 231909 ◽  
Author(s):  
Yu-Ho Won ◽  
Ho Seong Jang ◽  
Won Bin Im ◽  
Duk Young Jeon ◽  
Jeong Soo Lee
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Full Color ◽  
Warm White Light ◽  
White Light Emitting Diodes

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.

A Single-Phase Full-Color Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ Micron Belt Mat for White-Light Emitting Diode Application

2016 ◽  
Vol 697 ◽  
pp. 727-732 ◽  
Author(s):  
Bo Cui ◽  
Qing Hong Zhang ◽  
Hong Zhi Wang ◽  
Yao Gang Li
Keyword(s):  
Heat Treatment ◽  
White Light ◽  
Single Phase ◽  
Uv Light ◽  
Light Emitting Diode ◽  
Electrospinning Process ◽  
Light Emitting ◽  
Full Color ◽  
Color Tunable ◽  
White Light Emitting Diodes

A new kind of Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ oxyfluoride phosphor micron belt mat was obatained by simply electrospinning process and subsequent heat treatment. XRD result shows that a pure Ca4Si2O7F2 phase can be obtained at low temperature of around 900 °C. The micron belt precursor has a smooth surface and uniform morphology, and the width and thickness of the belt is about 2 μm and 200 nm. The morphology of micron belt is well retained after heat treatment, forming a plat phosphor mat consisting of uniform micron belt network. Ca4Si2O7F2:Ce3+, Ca4Si2O7F2:Tb3+, and Ca4Si2O7F2:Sm3+ exhibit the characteristic emissions of Ce3+ (4f7→4f65d1, blue), Tb3+ (4f8→4f75d, green), and Sm3+ (4f6→4f65d, red) under the excitation of near-UV light, respectively. By adjusting the doping concentration of Ce3+, Tb3+, Sm3+ ions a white emission in a single phase was obtained under the excitation of 360 nm. We have demonstrated that Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ phosphor mat can be a promising candidate for a color-tunable phosphor mat applied in a near-UV White light emitting diodes.

scholarly journals Ternary complex [Sm(acac)3(5-Br-2,2′-bpy)] for the solution-processed white polymer light-emitting diode (WPLED)

2020 ◽  
Author(s):  
Jiaxiang Liu
Keyword(s):  
Solid State ◽  
White Light ◽  
Ternary Complex ◽  
Light Emitting Diode ◽  
Primary Component ◽  
Solution Processed ◽  
Light Emitting ◽  
Full Color ◽  
Polymer Light Emitting Diode ◽  
The Ideal

In consideration of the Sm3þ-centered characteristic orange-light as the ideal color-primary component toward a dichromatic white-light, herein, through the doping of the complex [Sm(acac)3(5-Br-2,20-bpy)] (2; Hacac ¼ acetylacetone; 5-Br-2,2′-bpy ¼ 5-Br-2,20-bipyridine) into the PVK (PVK ¼ poly(N-vinyl-carbazole)) host, the obtained PVK@2 film (10:1, wt/wt) exhibits the straightforward solid-state white-light (ΦPL ¼ 6.7%). Further using the PVK@2 film (10:1; wt/wt) as the emitting layer, its singlecomponent solution-processed WPLED gives the electroluminescent performance (LMax of 360.9 cd/m2, ηMax c of 1.08 cd/A) satisfactory enough for portable full-color flat displays

scholarly journals Single-component white polymer light-emitting diode (WPLED) based on a binary tris-pyrazolonate-Sm-complex

2020 ◽  
Author(s):  
Jiaxiang Liu
Keyword(s):  
White Light ◽  
Light Emitting Diode ◽  
Single Component ◽  
Color Tuning ◽  
Solution Processed ◽  
Light Emitting ◽  
Component Solution ◽  
Full Color ◽  
Polymer Light Emitting Diode

Based on the doping of the binary tris-pyrazolate-Sm3þ complex [Sm(tba-PMP)3(5-Br-2,20-bpy)] (1; 5-Br-2,2′bpy ¼ 5-bromo2,20-bipyridine and Htba-PMP ¼ 1-phenyl-3-methyl-4-(tert-butylacetyl)-5-pyrazolone)) with an efficient orange-light into the PVK (poly(N-vinylcarbazole) host, the obtained PVK@1 films exhibit the dichromatic color-tuning (white-light to purplish-pink and to pink) characters strictly relative to the Sm3þdoping content and the λex wavelength. Further using the PVK@1 film (10:1; wt/wt) with the straightforward white-light (ΦPL ¼ 5.8%) as the emitting layer, its single-component solution-processed WPLED gives the electroluminescent performance (LMax of 157 cd/m2, ηMax c of 0.65 cd/A and the white-light-emitting stability) satisfactory enough for portable full-color flat displays.

Full-color Ba3MgSi2O8:Eu2+, Mn2+ phosphors for white-light-emitting diodes

2005 ◽  
Vol 135 (1-2) ◽  
pp. 21-24 ◽  
Author(s):  
Jong Su Kim ◽  
Kwon Taek Lim ◽  
Yong Seok Jeong ◽  
Pyung Eun Jeon ◽  
Jin Chul Choi ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Full Color ◽  
White Light Emitting Diodes

Designed glass frames full color in white light-emitting diodes and laser diodes lighting

2021 ◽  
Vol 414 ◽  
pp. 128754
Author(s):  
Haisheng Yang ◽  
Yujie Zhang ◽  
Yaqian Zhang ◽  
Yi Zhao ◽  
Xiaojuan Liang ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Laser Diodes ◽  
Light Emitting ◽  
Full Color ◽  
White Light Emitting Diodes

Full color carbon dots through surface engineering for constructing white light-emitting diodes

2019 ◽  
Vol 7 (8) ◽  
pp. 2212-2218 ◽  
Author(s):  
Wei Cai ◽  
Ting Zhang ◽  
Meng Xu ◽  
Miaoran Zhang ◽  
Yongjian Guo ◽  
...  
Keyword(s):  
White Light ◽  
Carbon Dots ◽  
Surface Engineering ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Natural Sunlight ◽  
Filament Lamp ◽  
Full Color ◽  
White Light Emitting Diodes

White light-emitting diode (WLED) devices are replacing the filament lamp and can provide a light close to natural sunlight, and they have thus drawn considerable attention in recent years.

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