S,N-Codoped oil-soluble fluorescent carbon dots for a high color-rendering WLED

2020 ◽  
Vol 8 (13) ◽  
pp. 4343-4349 ◽  
Author(s):  
Quan Wang ◽  
Yixun Gao ◽  
Boyang Wang ◽  
Yuanyuan Guo ◽  
Umar Ahmad ◽  
...  
Keyword(s):  
White Light ◽  
Carbon Dots ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Color Rendering ◽  
Fluorescent Carbon Dots ◽  
Excellent Color ◽  
Fluorescent Carbon

Novel S,N-codoped hydrophobic carbon dots (S,N-OCDs) were directly fabricated into a white light-emitting-diode (WLED), which showed excellent color rendering properties.

Rapid and green synthesis of fluorescent carbon dots from starch for white light-emitting diodes

2018 ◽  
Vol 33 (3) ◽  
pp. 276-288 ◽  
Author(s):  
Jing-xia Zheng ◽  
Xing-hua Liu ◽  
Yong-zhen Yang ◽  
Xu-guang Liu ◽  
Bing-she Xu
Keyword(s):  
Green Synthesis ◽  
White Light ◽  
Carbon Dots ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
White Light Emitting Diodes ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

scholarly journals The synthesis of green fluorescent carbon dots for warm white LEDs

RSC Advances ◽  
2018 ◽  
Vol 8 (35) ◽  
pp. 19585-19595 ◽  
Author(s):  
Qin Du ◽  
Jingxia Zheng ◽  
Junli Wang ◽  
Yongzhen Yang ◽  
Xuguang Liu
Keyword(s):  
White Light ◽  
Carbon Dots ◽  
Solvothermal Method ◽  
Light Emitting ◽  
White Leds ◽  
Light Emitting Devices ◽  
Warm White Light ◽  
Green Fluorescent ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Green emissive carbon dots synthesized by solvothermal method is used for warm white light-emitting devices.

scholarly journals Excellent color rendering index single system white light emitting carbon dots for next generation lighting devices

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Manasa Perikala ◽  
Asha Bhardwaj
Keyword(s):  
White Light ◽  
Carbon Dots ◽  
Quantum Yields ◽  
Single System ◽  
Light Emitting ◽  
Color Rendering Index ◽  
Different Color ◽  
Color Rendering ◽  
Excellent Color ◽  
Emission Bandwidth

AbstractRecently, quantum dots (QDs) are finding enormous application in white light emitting diodes (WLEDs) and WLEDs with high color rendition are in high demand. QD-WLEDs use different color (Red, Blue, Green) emitting QDs to obtain white light. Use of different color emitting QDs affect purity of white light due to self-absorption losses and QD degradation, in the long run affecting color rendering index (CRI) of WLEDs. Herein, we report low cost, environment friendly, open air atmosphere synthesis of single system white light emitting carbon dots (CDs) with broad emission bandwidth ranging 116 –143 nm and quantum yields (QY) ~ 5 – 13 % in colloidal state by modifying CD surface. Furthermore, carbon dot polymer phosphor (CD-PDMS phosphor) is fabricated which emits white light under UV illumination with a record emission bandwidth of ~ 154 nm and QY ~ 16 % in solid state. Moreover, CD-PDMS phosphor exhibit excellent color rendering index (CRI) ~ 96, the highest reported so far with CIE co-ordinates (0.31, 0.33) that are quite akin to pure white light. Such high performances are achieved due to high quality of CDs and CD-PDMS polymer phosphors by precise control in passivation/functionalization of nanoparticle surface. This work will set platform for the application of CD-phosphor based WLEDs in lighting systems.

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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