High efficient light-emitting diodes based on liquid-type carbon dots

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 96798-96802 ◽  
Author(s):  
Xingru Chen ◽  
Xue Bai ◽  
Chun Sun ◽  
Liang Su ◽  
Yiding Wang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Light Emitting Diodes ◽  
Luminous Efficiency ◽  
Carbon Dot ◽  
Light Emitting ◽  
High Efficient ◽  
Liquid Type

The liquid-type carbon dot-based LEDs exhibited the luminous efficiency of 44.36 lm W−1, which was 2.27 times higher than that of solid devices.

High Efficient White Organic Light-Emitting Diodes Using BCzVBi as Blue Fluorescent Dopant

2008 ◽  
Vol 8 (9) ◽  
pp. 4579-4583
Author(s):  
You-Hyun Kim ◽  
Su-Hwan Lee ◽  
Hyun-Soo Yoon ◽  
Jae-Yoon Choi ◽  
Sung Sik Shin ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Light Emitting Diodes ◽  
Luminous Efficiency ◽  
Organic Light Emitting Diodes ◽  
Efficiency Improvement ◽  
Light Emitting ◽  
Organic Light ◽  
High Efficient

Efficiency improvement and color optimization of white organic light-emitting diodes (WOLEDs) were achieved via employing blue host DPVBi doped with blue fluorescent, BCzVBi. The structure of high efficient WOLED device was composed of ITO/NPB/DPVBi:BCzVBi-6%/MADN:DCM2-0.5%/Bphen/Liq/Al. WOLED doped by blue fluorescent BCzVBi exhibits 6.19 cd/A of luminous efficiency and 15400 cd/m2 of maximum luminescence. It also performs 480 cd/m2 of luminance at 5.7 V and 15,400 cd/m2 at 12.9 V with CIEx,y coordinates of (0.33, 0.32) and (0.32, 0.32), respectively. Hole carrier and energy transfer from DPVBi to BCzVBi are proposed to explain the observed phenomena.

Achieving 46% efficient white-light emissive carbon dot-based material by enhancing phosphorescence for single-component white-light-emitting diodes

2021 ◽  
Author(s):  
Qijun Li ◽  
Yuchen Li ◽  
Shuai Meng ◽  
Jian Yang ◽  
Yukun Qin ◽  
...  
Keyword(s):  
White Light ◽  
Carbon Dots ◽  
Single Phase ◽  
Light Emitting Diodes ◽  
Emission Feature ◽  
Single Component ◽  
Dual Emission ◽  
Carbon Dot ◽  
Light Emitting ◽  
White Light Emitting Diodes

White-light-emitting carbon dots (CDs) with fluorescence/phosphorescence dual-emission feature is great importance for single-phase white-light-emitting diodes (WLEDs), but so far rather limited due to weak phosphorescence. Herein, a highly efficient white-light...

Efficient full-color emitting carbon-dot-based composite phosphors by chemical dispersion

Nanoscale ◽  
2020 ◽  
Vol 12 (29) ◽  
pp. 15823-15831 ◽  
Author(s):  
Mingye Sun ◽  
Yue Han ◽  
Xi Yuan ◽  
Pengtao Jing ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Light Emitting Diodes ◽  
Carbon Dot ◽  
Light Emitting ◽  
Chemical Dispersion ◽  
Full Color

New routes to prepare full-color emitting carbon dots and carbon-dot-based phosphors for application in light-emitting diodes.

Down-conversion monochromatic light-emitting diodes with the color determined by the active layer thickness and concentration of carbon dots

2015 ◽  
Vol 3 (26) ◽  
pp. 6613-6615 ◽  
Author(s):  
Chun Sun ◽  
Yu Zhang ◽  
Sergii Kalytchuk ◽  
Yu Wang ◽  
Xiaoyu Zhang ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Active Layer ◽  
Carbon Dots ◽  
Doping Concentration ◽  
Light Emitting Diodes ◽  
Monochromatic Light ◽  
Active Layer Thickness ◽  
Carbon Dot ◽  
Light Emitting ◽  
Down Conversion

Monochrome LEDs and color graphical patterns were fabricated by changing the thickness and doping concentration of carbon dot layers.

A single-phase heteroatom doped carbon dot phosphor toward white light-emitting diodes

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 38761-38768 ◽  
Author(s):  
Y. L. Wang ◽  
Y. Q. Zhao ◽  
Y. Zhang ◽  
F. Zhang ◽  
X. T. Feng ◽  
...  
Keyword(s):  
Citric Acid ◽  
White Light ◽  
Carbon Dots ◽  
Single Phase ◽  
Light Emitting Diodes ◽  
Citric Acid Monohydrate ◽  
Carbon Dot ◽  
Light Emitting ◽  
Doped Carbon Dots ◽  
White Light Emitting Diodes

Single-phase heteroatom doped carbon dots were prepared using citric acid monohydrate and ethylenediamine toward white light-emitting diodes.

Color Emission Carbon Dots with Quench-ResixAstant Solid-State Fluorescence for Light-Emitting Diodes

2021 ◽  
Vol 9 (10) ◽  
pp. 3901-3908
Author(s):  
Fanyong Yan ◽  
Hao Zhang ◽  
Jinxia Xu ◽  
Yawei Wu ◽  
Yueyan Zang ◽  
...  
Keyword(s):  
Solid State ◽  
Carbon Dots ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Solid State Fluorescence ◽  
Color Emission

Sonochemical Synthesis of Carbon Dots/Lanthanoid MOFs Hybrids for White Light-Emitting Diodes with High Color Rendering

2019 ◽  
Vol 11 (47) ◽  
pp. 44421-44429 ◽  
Author(s):  
Jintana Othong ◽  
Jaursup Boonmak ◽  
Vinich Promarak ◽  
Filip Kielar ◽  
Sujittra Youngme
Keyword(s):  
White Light ◽  
Carbon Dots ◽  
Light Emitting Diodes ◽  
Sonochemical Synthesis ◽  
Light Emitting ◽  
White Light Emitting Diodes ◽  
Color Rendering
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