High-Performance CsPbX3 Perovskite Quantum-Dot Light-Emitting Devices via Solid-State Ligand Exchange

2018 ◽  
Vol 1 (2) ◽  
pp. 488-496 ◽  
Author(s):  
Yo-Han Suh ◽  
Taeyun Kim ◽  
Jin Woo Choi ◽  
Chang-Lyoul Lee ◽  
Jongnam Park
Keyword(s):  
Solid State ◽  
Quantum Dot ◽  
Ligand Exchange ◽  
High Performance ◽  
Light Emitting ◽  
Light Emitting Devices

High Performance Blue Quantum Light-Emitting Diodes by Attaching Diffraction Wrinkle Patterns

Nanoscale ◽  
2021 ◽  
Author(s):  
Hui Qi ◽  
Shujie Wang ◽  
Chenguang Li ◽  
yaolong Zhao ◽  
bo Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Solid State Lighting ◽  
Light Emitting ◽  
High Efficient

High-efficient blue quantum-dot light-emitting diodes (QLEDs) are still challenging to make an application in displays and solid-state lighting. Enhancing light outcoupling is one of the most effective methods to improve...

scholarly journals Achieving High Exciton Utilization with Folded π-Molecules

2021 ◽  
Author(s):  
Shidang Xu ◽  
Bin Liu
Keyword(s):  
Solid State ◽  
High Performance ◽  
Thermal Perturbation ◽  
Hydrogen Atoms ◽  
Conjugated Molecules ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Face To Face ◽  
Organic Light ◽  
Very High

Abstract π-Molecules play important roles in many applications such as organic light emitting devices, photocatalysis, photovoltaics, biosensors and medicine. Very often, high-performance π-conjugated molecules are of great research interest. However, owing to the conflict between the design of efficient π structure (good rigidity and planarity) and efficient π aggregates (minimum face-to-face π effect), it is challenging for traditional planar π or recently emerged twisted π molecules to realize very high exciton utilization in solid state. Herein, we report a new π skeleton, folded π, to achieve high exciton utilization in solids. Folded π-based molecules tend to form molecular packing patterns that are rich in π interactions, favoring the suppression of unfavorable energy dissipation pathways such as molecular thermal perturbation. Meanwhile, the potential face-to-face π effect between planar π is well prevented by the hydrogen atoms around the π planes. As a result of effective packing, all the synthesized π-based molecules show very high exciton utilization in solids.

63‐1: Invited Paper: High Performance Top Emission Quantum‐Dot Light‐Emitting Devices

2021 ◽  
Vol 52 (1) ◽  
pp. 920-922
Author(s):  
Wenjun Hou ◽  
Wei Xu ◽  
Yiran Yan ◽  
Wenyong Liu ◽  
Longjia Wu ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Light Emitting ◽  
Light Emitting Devices

Sodium Chloride Protected CdHgTe Quantum Dot Based Solid-State Near-Infrared Luminophore for Light-Emitting Devices and Luminescence Thermometry

ACS Photonics ◽  
2017 ◽  
Vol 4 (6) ◽  
pp. 1459-1465 ◽  
Author(s):  
Sergii Kalytchuk ◽  
Marcus Adam ◽  
Ondrej Tomanec ◽  
Radek Zbořil ◽  
Nikolai Gaponik ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Solid State ◽  
Quantum Dot ◽  
Near Infrared ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Luminescence Thermometry

High-brightness perovskite quantum dot light-emitting devices using inkjet printing

2021 ◽  
Vol 93 ◽  
pp. 106168
Author(s):  
Chunbo Zheng ◽  
Xin Zheng ◽  
Chen Feng ◽  
Songman Ju ◽  
Zhongwei Xu ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Inkjet Printing ◽  
High Brightness ◽  
Light Emitting ◽  
Light Emitting Devices

Photoluminescence Properties of Ca3Si2O7: Pr3+ Orange-Red Phosphors Prepared by High-Temperature Solid-State Method

2018 ◽  
Vol 73 (6) ◽  
pp. 555-558 ◽  
Author(s):  
Zhi-Qing Peng ◽  
Rong Chen ◽  
Wen-Lin Feng
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Solid State ◽  
Solid State Method ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Red Phosphors ◽  
Typical Sample ◽  
State Method ◽  
Xrd Patterns

AbstractNovel luminescent materials Ca3-xSi2O7: xPr3+ were successfully prepared by the high-temperature solid-state method. The crystal structure, morphology, and optical spectrum were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM), and spectroscopy, respectively. The XRD patterns of the samples indicate that the crystal structure is monoclinic symmetry. The SEM shows that the selected sample has good crystallinity although its appearance is irregular and scalelike. The peak of the excitation spectrum of the sample is located at around 449 nm, corresponding to 3H4→3P2 transition of Pr3+. The peak of the emission spectrum of the sample is situated at around 612 nm which is attributed to 3P0→3H6 transition of Pr3+, and the colour is orange-red. The optimum concentration for Pr3+ replaced Ca2+ sites in Ca3Si2O7: Pr3+ is 0.75 mol%. The lifetime (8.48 μs) of a typical sample (Ca2.9925Pr0.0075)Si2O7 is obtained. It reveals that orange-red phosphors Ca3-xSi2O7: xPr3+ possess remarkable optical properties and can be used in white light emitting devices.

High Performance Inkjet‐Printed Quantum‐Dot Light‐Emitting Diodes with High Operational Stability

2021 ◽  
pp. 2101069
Author(s):  
Siqi Jia ◽  
Haodong Tang ◽  
Jingrui Ma ◽  
Shihao Ding ◽  
Xiangwei Qu ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Operational Stability ◽  
Light Emitting
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