Efficient flexible polymer light emitting diodes with conducting polymer anodes

2007 ◽  
Vol 17 (33) ◽  
pp. 3551 ◽  
Author(s):  
J. Huang ◽  
X. Wang ◽  
A. J. deMello ◽  
J. C. deMello ◽  
D. D. C. Bradley
Keyword(s):  
Conducting Polymer ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Flexible Polymer ◽  
Polymer Light Emitting Diodes

Novel microlens arrays with embedded Al2O3nanoparticles for enhancing efficiency and stability of flexible polymer light-emitting diodes

RSC Advances ◽  
2016 ◽  
Vol 6 (70) ◽  
pp. 65450-65458 ◽  
Author(s):  
Young Yun Kim ◽  
Jung Jin Park ◽  
Seong Ji Ye ◽  
Woo Jin Hyun ◽  
Hyeon-Gyun Im ◽  
...  
Keyword(s):  
Optical Properties ◽  
Light Emitting Diodes ◽  
Microlens Arrays ◽  
Light Emitting ◽  
Flexible Polymer ◽  
Polymer Light Emitting Diodes ◽  
Enhance Efficiency ◽  
Silica Hybrid

Microlens arrays were newly fabricated with silica hybrid sol and Al2O3nanoparticles, to enhance efficiency and stability of polymer light-emitting diodes, as well as to minimize changes in optical properties.

Highly Deformable and See‐Through Polymer Light‐Emitting Diodes with All‐Conducting‐Polymer Electrodes

2017 ◽  
Vol 30 (3) ◽  
pp. 1703437 ◽  
Author(s):  
Seyoung Kee ◽  
Nara Kim ◽  
Byoungwook Park ◽  
Bong Seong Kim ◽  
Soonil Hong ◽  
...  
Keyword(s):  
Conducting Polymer ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Polymer Electrodes ◽  
Polymer Light Emitting Diodes

Injecting Inter-Layers and the Built-in Potential of Blue Polymer Light-Emitting Diodes

2000 ◽  
Vol 660 ◽  
Author(s):  
Thomas M. Brown ◽  
Ian S. Millard ◽  
David J. Lacey ◽  
Jeremy H. Burroughes ◽  
Richard H. Friend ◽  
...  
Keyword(s):  
Indium Tin Oxide ◽  
Light Emitting Diodes ◽  
Basic Structure ◽  
Thin Layers ◽  
Carrier Injection ◽  
Semiconducting Polymer ◽  
Light Emitting ◽  
Physical Mechanisms ◽  
Organic Solid ◽  
Polymer Light Emitting Diodes

ABSTRACTThe semiconducting-polymer/injecting-electrode heterojunction plays a crucial part in the operation of organic solid state devices. In polymer light-emitting diodes (LEDs), a common fundamental structure employed is Indium-Tin-Oxide/Polymer/Al. However, in order to fabricate efficient devices, alterations to this basic structure have to be carried out. The insertion of thin layers, between the electrodes and the emitting polymer, has been shown to greatly enhance LED performance, although the physical mechanisms underlying this effect remain unclear. Here, we use electro-absorption measurements of the built-in potential to monitor shifts in the barrier height at the electrode/polymer interface. We demonstrate that the main advantage brought about by inter-layers, such as poly(ethylenedioxythiophene)/poly(styrene sulphonic acid) (PEDOT:PSS) at the anode and Ca, LiF and CsF at the cathode, is a marked reduction of the barrier to carrier injection. The electro- absorption results also correlate with the electroluminescent characteristics of the LEDs.

Geometrically isomeric [Ir(iqbt)(ppy)(hpa)] complexes with differential molecule orientations for efficient near-infrared (NIR) polymer light-emitting diodes (PLEDs)

2021 ◽  
Vol 9 (36) ◽  
pp. 12068-12072
Author(s):  
Wentao Li ◽  
Jiaxiang Liu ◽  
Baowen Wang ◽  
Siyu Hou ◽  
Xingqiang Lü ◽  
...  
Keyword(s):  
Near Infrared ◽  
Light Emitting Diodes ◽  
Dipole Transition ◽  
Transition Dipole ◽  
Light Emitting ◽  
Horizontal Orientation ◽  
Polymer Light Emitting Diodes

Based on geometrical isomerisation of [Ir(C^N1)(C^N2)((N^O))]-tris-heteroleptic Ir(iii)-complexes, the augmented transition dipole transition (TMD) with a preferential horizontal orientation, which is beneficial for their NIR-phosphorescence, is reported.

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