Nonblinking Quantum-Dot-Based Blue Light-Emitting Diodes with High Efficiency and a Balanced Charge-Injection Process

ACS Photonics ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 939-946 ◽  
Author(s):  
Qingli Lin ◽  
Lei Wang ◽  
Zhaohan Li ◽  
Huaibin Shen ◽  
Lijun Guo ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Blue Light ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Charge Injection ◽  
Light Emitting ◽  
Injection Process

Preparation of efficient quantum dot light-emitting diodes by balancing charge injection and sensitizing emitting layer with phosphorescent dye

2019 ◽  
Vol 7 (19) ◽  
pp. 5755-5763 ◽  
Author(s):  
Luhua Lan ◽  
Benchang Liu ◽  
Hong Tao ◽  
Jianhua Zou ◽  
Congbiao Jiang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Charge Injection ◽  
Hole Injection ◽  
Light Emitting

The balance between electron and hole injection is critical for obtaining high efficiency in quantum dot light-emitting diodes (QLEDs).

scholarly journals Device Modeling of Quantum Dot–Organic Light Emitting Diodes for High Green Color Purity

2021 ◽  
Vol 11 (6) ◽  
pp. 2828
Author(s):  
Byoung-Seong Jeong
Keyword(s):  
Quantum Dot ◽  
Emission Spectrum ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Color Purity ◽  
Wavelength Band ◽  
Light Emitting ◽  
Green Color ◽  
Organic Light

In this study, the optimal structure for obtaining high green color purity was investigated by modeling quantum dot (QD)–organic light-emitting diodes (OLED). It was found that even if the green quantum dot (G-QD) density in the G-QD layer was 30%, the full width at half maximum (FWHM) in the green wavelength band could be minimized to achieve a sharp emission spectrum, but it was difficult to completely block the blue light leakage with the G-QD layer alone. This blue light leakage problem was solved by stacking a green color filter (G-CF) layer on top of the G-QD layer. When G-CF thickness 5 μm was stacked, blue light leakage was blocked completely, and the FWHM of the emission spectrum in the green wavelength band was minimized, resulting in high green color purity. It is expected that the overall color gamut of QD-OLED can be improved by optimizing the device that shows such excellent green color purity.

High efficiency quantum dot light emitting diodes from positive aging

Nanoscale ◽  
2017 ◽  
Vol 9 (38) ◽  
pp. 14451-14457 ◽  
Author(s):  
Krishna P. Acharya ◽  
Alexandre Titov ◽  
Jake Hyvonen ◽  
Chenggong Wang ◽  
Jean Tokarz ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Positive Aging ◽  
Polymer Hybrid ◽  
Colloidal Quantum Dot

Colloidal quantum dot-polymer hybrid light emitting diodes (QLEDs) that exhibit external quantum efficiencies >12% for all three primary colors (21% from green) have been demonstrated.

Partially pyridine-functionalized quantum dots for efficient red, green, and blue light-emitting diodes

2019 ◽  
Vol 7 (12) ◽  
pp. 3429-3435 ◽  
Author(s):  
Sukyung Choi ◽  
Jaehyun Moon ◽  
Hyunsu Cho ◽  
Byoung-Hwa Kwon ◽  
Nam Sung Cho ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
High Brightness ◽  
Light Emitting ◽  
Turn On ◽  
Colloidal Quantum Dot

Surface-exchanged, partially pyridine-functionalized colloidal quantum dot-based light-emitting diodes (QD-LEDs) exhibit a low turn-on voltage and high brightness.

High‐efficiency quantum dot light‐emitting diodes with blue cadmium‐free quantum dots

2020 ◽  
Vol 28 (5) ◽  
pp. 401-409 ◽  
Author(s):  
Tatsuya Ryowa ◽  
Takeshi Ishida ◽  
Yusuke Sakakibara ◽  
Keisuke Kitano ◽  
Masaya Ueda ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting

All-solution processed inverted green quantum dot light-emitting diodes with concurrent high efficiency and long lifetime

2019 ◽  
Vol 6 (10) ◽  
pp. 2009-2015 ◽  
Author(s):  
Zhiwen Yang ◽  
Qianqian Wu ◽  
Gongli Lin ◽  
Xiaochuan Zhou ◽  
Weijie Wu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Shell Growth ◽  
Solution Processed ◽  
Light Emitting ◽  
Long Lifetime

An all-solution processed inverted green quantum dot-based light-emitting diode with concurrent high efficiency and long lifetime is obtained by precisely controlled double shell growth of quantum dots.

Highly efficient and bright red quantum dot light-emitting diodes with balanced charge injection

2020 ◽  
Vol 81 ◽  
pp. 105683 ◽  
Author(s):  
Yanlian Lei ◽  
Yongshuang Zhao ◽  
Qiaoming Zhang ◽  
Zuhong Xiong ◽  
Lixiang Chen
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Charge Injection ◽  
Light Emitting ◽  
Highly Efficient
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