scholarly journals Photophysical Properties of Two New Donor-Acceptor Conjugated Copolymers and Their Model Compounds: Applications in Polymer Light Emitting Diodes (PLEDs) and Polymer Photovoltaic Cells (PPCs)

10.5772/54254 ◽  
2012 ◽  
Author(s):  
S. Ayachi ◽  
A. Mabrouk ◽  
M. Bouachrine ◽  
K. Alimi
Keyword(s):  
Light Emitting Diodes ◽  
Photophysical Properties ◽  
Photovoltaic Cells ◽  
Model Compounds ◽  
Light Emitting ◽  
Donor Acceptor ◽  
Polymer Light Emitting Diodes ◽  
Conjugated Copolymers

Highly Efficient Fluorene- and Benzothiadiazole-Based Conjugated Copolymers for Polymer Light-Emitting Diodes

2002 ◽  
Vol 35 (16) ◽  
pp. 6094-6100 ◽  
Author(s):  
Petra Herguth ◽  
Xuezhong Jiang ◽  
Michelle S. Liu ◽  
Alex K.-Y. Jen
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Polymer Light Emitting Diodes ◽  
Conjugated Copolymers

Donor-acceptor copolymers for red- and near-infrared-emitting polymer light-emitting diodes

2005 ◽  
Vol 43 (7) ◽  
pp. 1417-1431 ◽  
Author(s):  
Barry C. Thompson ◽  
Luis G. Madrigal ◽  
Mauricio R. Pinto ◽  
Tae-Sik Kang ◽  
Kirk S. Schanze ◽  
...  
Keyword(s):  
Near Infrared ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Donor Acceptor ◽  
Polymer Light Emitting Diodes

Conjugated Copolymers Based on Fluorene−Thieno[3,2-b]thiophene for Light-Emitting Diodes and Photovoltaic Cells

2007 ◽  
Vol 40 (17) ◽  
pp. 6164-6171 ◽  
Author(s):  
Weihua Tang ◽  
Lin Ke ◽  
Liwei Tan ◽  
Tingting Lin ◽  
Thomas Kietzke ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Photovoltaic Cells ◽  
Light Emitting ◽  
Conjugated Copolymers

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.

Efficient electron injection in blue-emitting polymer light-emitting diodes with LiF/Ca/Al cathodes

2001 ◽  
Vol 79 (2) ◽  
pp. 174-176 ◽  
Author(s):  
T. M. Brown ◽  
R. H. Friend ◽  
I. S. Millard ◽  
D. J. Lacey ◽  
J. H. Burroughes ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Electron Injection ◽  
Light Emitting ◽  
Polymer Light Emitting Diodes
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