A wet- and dry-process feasible carbazole type host for highly efficient phosphorescent OLEDs

2015 ◽  
Vol 3 (47) ◽  
pp. 12297-12307 ◽  
Author(s):  
Jwo-Huei Jou ◽  
Snehasis Sahoo ◽  
Sudhir Kumar ◽  
Hui-Huan Yu ◽  
Po-Hsun Fang ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Organic Light Emitting Diodes ◽  
Large Area ◽  
Light Emitting ◽  
Organic Layers ◽  
Dry Process ◽  
Type Host ◽  
Roll To Roll ◽  
Organic Light

A wet- and dry-process feasible host material is crucial to realize, respectively, low cost roll-to-roll fabrication of large area and high performance organic light-emitting diodes (OLEDs) with precise deposition of organic layers.

Five-minute synthesis of silver nanowires and their roll-to-roll processing for large-area organic light emitting diodes

Nanoscale ◽  
2018 ◽  
Vol 10 (25) ◽  
pp. 12087-12092 ◽  
Author(s):  
Hwansu Sim ◽  
Chanho Kim ◽  
Shingyu Bok ◽  
Min Ki Kim ◽  
Hwisu Oh ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Propylene Glycol ◽  
Light Emitting Diodes ◽  
Silver Nanowires ◽  
Organic Light Emitting Diodes ◽  
Polyol Synthesis ◽  
Large Area ◽  
Light Emitting ◽  
Roll To Roll ◽  
Organic Light

Silver nanowires can be rapidly synthesized by introducing propylene glycol into ethylene glycol-based polyol synthesis and applied to roll-to-roll process for large-area organic light emitting diodes.

scholarly journals Enhanced flexible optoelectronic devices by controlling the wettability of an organic bifacial interlayer

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Soyeon Kim ◽  
Adi Prasetio ◽  
Joo Won Han ◽  
Yongki Kim ◽  
Myunghun Shin ◽  
...  
Keyword(s):  
Interfacial Layer ◽  
Light Emitting Diodes ◽  
Low Cost ◽  
Optoelectronic Devices ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Layers ◽  
Interfacial Engineering ◽  
Organic Light ◽  
Organic Optoelectronic

AbstractSolution-processed flexible organic optoelectronic devices have great potential as low-cost organic photovoltaics for energy harvesting, and in organic light-emitting diodes as a lighting source. However, a major challenge for improving device performance and stability is the different interfacial characteristics of the hydrophobic organic layers and hydrophilic transparent electrodes, particularly for flexible devices. Surface wetting controlled interfacial engineering can provide a useful method to develop highly efficient flexible organic devices. Here, an unsaturated fatty acid-modified ethoxylated polyethyleneimine organic interfacial layer is designed, which is hydrophobic or hydrophilic on different interfaces. This interlayer results in a power conversion efficiency of 10.57% for rigid and 9.04% for flexible photovoltaic devices. Furthermore, the long-term air storage stability for 250 h is substantially improved, retaining 87.75% efficiency without encapsulation, due to the wettability driven improvement of the optical and electronic properties of the cathode interfacial layer. The performance of organic light emitting diodes also benefitted from the interlayer. This study provides a strategy to simultaneously improve efficiency and stability by controlling the wettability of the interfacial layer.

Ultra-smooth and robust graphene-based hybrid anode for high-performance flexible organic light-emitting diodes

2021 ◽  
Author(s):  
zhikun zhang ◽  
lianlian xia ◽  
Lizhao Liu ◽  
Yuwen Chen ◽  
zuozhi wang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Chemical Vapor ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Large Particles

Large surface roughness, especially caused by the large particles generated during both the transfer and the doping processes of graphene grown by chemical vapor deposition (CVD) is always a critical...

High performance red phosphorescent organic electroluminescent devices with characteristic mechanisms by utilizing terbium or gadolinium complexes as sensitizers

2017 ◽  
Vol 5 (8) ◽  
pp. 2066-2073 ◽  
Author(s):  
Rongzhen Cui ◽  
Weiqiang Liu ◽  
Liang Zhou ◽  
Xuesen Zhao ◽  
Yunlong Jiang ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Color Purity ◽  
Electroluminescent Devices ◽  
Light Emitting ◽  
Organic Light ◽  
Gadolinium Complexes ◽  
Organic Electroluminescent ◽  
High Color Purity

High performance sensitized organic light-emitting diodes with high color purity were obtained by utilizing terbium or gadolinium complexes as sensitizers.

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