scholarly journals Electroluminescent Warm White Light‐Emitting Diodes Based on Passivation Enabled Bright Red Bandgap Emission Carbon Quantum Dots

2019 ◽  
Vol 6 (13) ◽  
pp. 1900397 ◽  
Author(s):  
Haoran Jia ◽  
Zhibin Wang ◽  
Ting Yuan ◽  
Fanglong Yuan ◽  
Xiaohong Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Carbon Quantum Dots ◽  
Light Emitting ◽  
Warm White Light ◽  
White Light Emitting Diodes

53% Efficient Red Emissive Carbon Quantum Dots for High Color Rendering and Stable Warm White‐Light‐Emitting Diodes

2017 ◽  
Vol 29 (37) ◽  
pp. 1702910 ◽  
Author(s):  
Zifei Wang ◽  
Fanglong Yuan ◽  
Xiaohong Li ◽  
Yunchao Li ◽  
Haizheng Zhong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Carbon Quantum Dots ◽  
Light Emitting ◽  
Warm White Light ◽  
White Light Emitting Diodes ◽  
Color Rendering

scholarly journals Solvent regulation synthesis of single-component white emission carbon quantum dots for white light-emitting diodes

2021 ◽  
Vol 10 (1) ◽  
pp. 465-477
Author(s):  
Longshi Rao ◽  
Qing Zhang ◽  
Mingfu Wen ◽  
Zhongfa Mao ◽  
Huaxian Wei ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Carbon Quantum Dots ◽  
Single Component ◽  
Great Promise ◽  
Solvent Engineering ◽  
Light Emitting ◽  
White Emission ◽  
White Light Emitting Diodes

Abstract White light-emitting diodes (WLEDs) hold great promise in lighting, display, and visible light communication devices, and single-component white emission carbon quantum dots (SCWE-CQDs) as the key component of WLEDs have many outstanding advantages. However, rapid and efficient synthesis of SCWE-CQDs with high photoluminescence quantum yield (PLQY) and stability remains challenging. Here, we report a novel solvent engineering strategy to obtain highly photoluminescent SCWE-CQDs by controlling the dilution ratios between N,N-dimethylformamide (DMF) and pristine red carbon quantum dots (RCQDs) solution. By optimizing synthesis conditions, the relative PLQY of the SCWE-CQDs solution reached 53%. Morphological, structural, and optical property characterizations indicate that the combined action of the hydrogen bond (HB) effect and the size effect leads to the blue shift of RCQDs, but the HB effect is more dominant than the particle size in causing large spectral shifts. In addition, the WLEDs with high color rendering index of 89 and remarkable reliability were obtained based on the highly photoluminescent SCWE-CQDs. This facile solvent engineering approach for synthesizing tunable emission CQDs will promote the progress of carbon-based luminescent materials for applications in optoelectronic devices.

Recent advances in white light-emitting diodes of carbon quantum dots

Nanoscale ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 4826-4832 ◽  
Author(s):  
Ping He ◽  
Yuxin Shi ◽  
Ting Meng ◽  
Ting Yuan ◽  
Yunchao Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Carbon Quantum Dots ◽  
Single Component ◽  
Light Emitting ◽  
Recent Advances ◽  
White Light Emitting Diodes

In this mini review, we update the latest research in the design of high-performance WLEDs with different correlated color temperatures by tuning the red component using red emissive CQDs and single-component white emissive CQDs.

Excellent luminescence films of excitation-independent carbon quantum dots toward non-rare-earth phosphor-based white light-emitting diodes

2018 ◽  
Vol 764 ◽  
pp. 17-23 ◽  
Author(s):  
Haobo Gao ◽  
Daqin Chen ◽  
Gaoliang Fang ◽  
Shuo Yuan ◽  
Xiao Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Rare Earth ◽  
White Light ◽  
Light Emitting Diodes ◽  
Carbon Quantum Dots ◽  
Light Emitting ◽  
White Light Emitting Diodes ◽  
Rare Earth Phosphor

Warm White Light Emitting Diodes with Gelatin-Coated AgInS2/ZnS Core/Shell Quantum Dots

2015 ◽  
Vol 7 (50) ◽  
pp. 27713-27719 ◽  
Author(s):  
Xiaojiao Kang ◽  
Yanchun Yang ◽  
Lan Wang ◽  
Song Wei ◽  
Daocheng Pan
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Core Shell ◽  
Light Emitting ◽  
Warm White Light ◽  
White Light Emitting Diodes

Stable and efficient hybrid Ag-In-S/ZnS@SiO2-carbon quantum dots nanocomposites for white light-emitting diodes

2020 ◽  
Vol 393 ◽  
pp. 124654 ◽  
Author(s):  
Hao Lin ◽  
Jie Yang ◽  
Yong-feng Liu ◽  
Fan-ju Zeng ◽  
Xiao-Sheng Tang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Carbon Quantum Dots ◽  
Light Emitting ◽  
White Light Emitting Diodes

Direct blending of multicolor carbon quantum dots into fluorescent films for white light emitting diodes with an adjustable correlated color temperature

2019 ◽  
Vol 7 (6) ◽  
pp. 1502-1509 ◽  
Author(s):  
Yuanfei Ding ◽  
Jingxia Zheng ◽  
Junli Wang ◽  
Yongzhen Yang ◽  
Xuguang Liu
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
White Light ◽  
Light Emitting Diodes ◽  
Carbon Quantum Dots ◽  
Color Temperature ◽  
Light Emitting ◽  
Long Wavelength ◽  
White Light Emitting Diodes

The synthesis and luminescence origin of multicolour long wavelength CQDs and solid state luminous red-green-blue CQD films for CQD phosphor-based WLEDs with a high CRI and an adjustable CCT.

scholarly journals Highly efficient emission and high-CRI warm white light-emitting diodes from ligand-modified CsPbBr3 quantum dots

2021 ◽  
Vol 0 (0) ◽  
pp. 200075-200075
Author(s):  
Dongdong Yan ◽  
◽  
Shuangyi Zhao ◽  
Yubo Zhang ◽  
Huaxin Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Warm White Light ◽  
White Light Emitting Diodes

scholarly journals Warm-white light-emitting diodes integrated with colloidal quantum dots for high luminous efficacy and color rendering

2010 ◽  
Vol 35 (20) ◽  
pp. 3372 ◽  
Author(s):  
Sedat Nizamoglu ◽  
Talha Erdem ◽  
Xiao Wei Sun ◽  
Hilmi Volkan Demir
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Colloidal Quantum Dots ◽  
Luminous Efficacy ◽  
Light Emitting ◽  
Warm White Light ◽  
White Light Emitting Diodes ◽  
Color Rendering
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