Reduced efficiency roll-off in light-emitting diodes enabled by quantum dot–conducting polymer nanohybrids

Colloidal quantum dots (CQDs) are fast-improving materials for next-generation solution-processed optoelectronic devices such as solar cells, photocatalysis, light emitting diodes, and photodetectors.

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Semitransparent Quantum Dot Light-Emitting Diodes by Cadmium-Free Colloidal Quantum Dots

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2014.9975 ◽

2014 ◽

Vol 14 (11) ◽

pp. 8636-8640 ◽

Cited By ~ 4

Author(s):

Yohan Kim ◽

Christian Ippen ◽

Tonino Greco ◽

Min Suk Oh ◽

Chul Jong Han ◽

...

Keyword(s):

Quantum Dots ◽

Quantum Dot ◽

Light Emitting Diodes ◽

Colloidal Quantum Dots ◽

Light Emitting

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Patterned mist deposition of tri-colour CdSe/ZnS quantum dot films toward RGB LED devices

Opto-Electronics Review ◽

10.2478/s11772-012-0019-9 ◽

2012 ◽

Vol 20 (2) ◽

Cited By ~ 18

Author(s):

S. Pickering ◽

A. Kshirsagar ◽

J. Ruzyllo ◽

J. Xu

Keyword(s):

Quantum Dots ◽

Quantum Dot ◽

Light Emitting Diodes ◽

Light Emitting Diode ◽

Precursor Solution ◽

Colloidal Quantum Dots ◽

Colloidal Solutions ◽

Light Emitting ◽

Mist Deposition ◽

Viable Method

AbstractIn this experiment a technique of mist deposition was explored as a way to form patterned ultra-thin-films of CdSe/ZnS core/shell nanocrystalline quantum dots using colloidal solutions. The objective of this study was to investigate the feasibility of mist deposition as a patterning method for creating multicolour quantum dot light emitting diodes. Mist deposition was used to create three rows of quantum dot light emitting diodes on a single device with each row having a separate colour. The colours chosen were red, green and yellow with corresponding peak wavelengths of 620 nm, 558 nm, and 587 nm. The results obtained from this experiment show that it is possible to create multicolour devices on a single substrate. The peak brightnesses obtained in this experiment for the red, green, and yellow were 508 cd/m, 507 cd/m, and 665 cd/m, respectively. The similar LED brightness is important in display technologies using colloidal quantum dots in a precursor solution to ensure one colour does not dominate the emitted spectrum. Results obtained in-terms of brightness were superior to those achieved with inkjet deposition. This study has shown that mist deposition is a viable method for patterned deposition applied to quantum dot light emitting diode display technologies.

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Surface Organic Ligands-Passivated Quantum Dots: Toward High-Performance Light-Emitting Diodes with Long Lifetime

Journal of Materials Chemistry C ◽

10.1039/d0tc05391k ◽

2021 ◽

Author(s):

Lishuang Wang ◽

Ying Lv ◽

Jie Lin ◽

Jialong Zhao ◽

Xingyuan Liu ◽

...

Keyword(s):

Quantum Dots ◽

High Performance ◽

Light Emitting Diodes ◽

Organic Ligands ◽

Colloidal Quantum Dots ◽

Core Shell ◽

Light Emitting ◽

Long Lifetime

For quantum dots light-emitting diodes (QLEDs), typical colloidal quantum dots (QDs) are usually composed of a core/shell heterostructure which is covered with organic ligands as surface passivated materials to confine...

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