Blue and green double band luminescent carbon quantum dots: Synthesis, origin of photoluminescence, and application in white light-emitting devices

2021 ◽  
Vol 118 (15) ◽  
pp. 153102
Author(s):  
Xifang Chen ◽  
Wenhui Wu ◽  
Wenxia Zhang ◽  
Ziye Wang ◽  
Zhenjin Fu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Carbon Quantum Dots ◽  
Light Emitting ◽  
Light Emitting Devices

scholarly journals A simple and green synthesis of carbon quantum dots from coke for white light-emitting devices

RSC Advances ◽  
2019 ◽  
Vol 9 (58) ◽  
pp. 33789-33793 ◽  
Author(s):  
Xiaoting Feng ◽  
Yi Zhang
Keyword(s):  
Quantum Dots ◽  
Green Synthesis ◽  
White Light ◽  
Carbon Quantum Dots ◽  
Light Illumination ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
White Light Illumination

CQDs are prepared from coke. The coke-based CQDs as a converter are applied to the white light illumination field.

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.

Enhancement of Fluorescence Emission for Tricolor Quantum Dots Assembled in Polysiloxane toward Solar Spectrum‐Simulated White Light‐Emitting Devices

Small ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 1905266 ◽  
Author(s):  
Guangqi Hu ◽  
Yuqiong Sun ◽  
Jianle Zhuang ◽  
Xuejie Zhang ◽  
Haoran Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Solar Spectrum ◽  
Fluorescence Emission ◽  
Light Emitting ◽  
Light Emitting 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.

Highly Stable Silica-Wrapped Mn-Doped CsPbCl3 Quantum Dots for Bright White Light-Emitting Devices

2018 ◽  
Vol 10 (50) ◽  
pp. 43978-43986 ◽  
Author(s):  
Weiwei Chen ◽  
Tongchao Shi ◽  
Juan Du ◽  
Zhigang Zang ◽  
Zhiqiang Yao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Bright White Light ◽  
Mn Doped

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

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
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