Luminance efficiency roll-off mechanism in CsPbBr3−xClx mixed-halide perovskite quantum dot blue light-emitting diodes

2021 ◽  
Author(s):  
Young Ran Park ◽  
Hong Hee Kim ◽  
Sangwon Eom ◽  
Won Kook Choi ◽  
Hyosung Choi ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Significant Issue ◽  
P Efficiency ◽  
Light Emitting ◽  
Halide Perovskite ◽  
Luminance Efficiency

Efficiency roll-off is a significant issue in blue light-emitting diodes (LEDs), but its origin still remains controversial.

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.

Additives in Halide Perovskite for Blue-Light-Emitting Diodes: Passivating Agents or Crystallization Modulators?

2021 ◽  
pp. 4265-4272
Author(s):  
Nur Fadilah Jamaludin ◽  
Natalia Yantara ◽  
Benny Febriansyah ◽  
Yeow Boon Tay ◽  
Bening Tirta Muhammad ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Halide Perovskite

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.

Engineering Color-Stable Blue Light-Emitting Diodes with Lead Halide Perovskite Nanocrystals

2019 ◽  
Vol 11 (24) ◽  
pp. 21655-21660 ◽  
Author(s):  
Stefan T. Ochsenbein ◽  
Franziska Krieg ◽  
Yevhen Shynkarenko ◽  
Gabriele Rainò ◽  
Maksym V. Kovalenko
Keyword(s):  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Perovskite Nanocrystals ◽  
Halide Perovskite ◽  
Lead Halide

Quantum-dot blue light emitting diodes utilizing organic/inorganic hybrid structures

2014 ◽  
Vol 54 (2S) ◽  
pp. 02BC03
Author(s):  
Feifei Wu ◽  
Lian Hu ◽  
Bingpo Zhang ◽  
Ruifeng Li ◽  
Huizhen Wu
Keyword(s):  
Quantum Dot ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Hybrid Structures ◽  
Inorganic Hybrid ◽  
Light Emitting

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

Highly flexible organometal halide perovskite quantum dot based light-emitting diodes on a silver nanowire–polymer composite electrode

2017 ◽  
Vol 5 (3) ◽  
pp. 531-538 ◽  
Author(s):  
Fangchao Zhao ◽  
Dustin Chen ◽  
Shuai Chang ◽  
Hailong Huang ◽  
Kwing Tong ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Polymer Composite ◽  
Composite Electrode ◽  
Light Emitting Diodes ◽  
Silver Nanowire ◽  
Light Emitting ◽  
Organometal Halide Perovskite ◽  
Halide Perovskite

Highly flexible and efficient CH3NH3PbBr3 quantum dot based light-emitting diodes were developed on a silver nanowire–polymer composite electrode.

Organometal Halide Perovskite Quantum Dot Light-Emitting Diodes

2016 ◽  
Vol 26 (26) ◽  
pp. 4797-4802 ◽  
Author(s):  
Wei Deng ◽  
Xiuzhen Xu ◽  
Xiujuan Zhang ◽  
Yedong Zhang ◽  
Xiangcheng Jin ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Organometal Halide Perovskite ◽  
Halide Perovskite
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