Light-emitting devices based on sequentially adsorbed layers of poly(p-phenylene vinylene) (PPV) and poly(acrylic acid) (PAA)

1997 ◽  
Author(s):  
Michael F. Durstock ◽  
Michael F. Rubner
Keyword(s):  
Acrylic Acid ◽  
Phenylene Vinylene ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Adsorbed Layers ◽  
Poly Acrylic Acid

Electrochemically Based Light Emitting Devices from Sequentially Adsorbed Multilayers of a Polymeric Ruthenium (II) Complex and Poly(Acrylic Acid)

1997 ◽  
Vol 488 ◽  
Author(s):  
Aiping Wu ◽  
Jin-Kyu Lee ◽  
Michael F. Rubner
Keyword(s):  
Acrylic Acid ◽  
Processing Technique ◽  
Device Performance ◽  
Layer By Layer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Sequential Adsorption ◽  
Adsorption Processing ◽  
Deposition Conditions ◽  
Poly Acrylic Acid

AbstractWe have investigated a new light emitting material, Ru(bpy)3 2+ polyester for fabricating electrochemically based solid state light emitting devices using the layer-by-layer sequential adsorption processing technique. By controlling the deposition conditions such as the pH of the Ru(bpy)32+ polyester and poly(acrylic acid) (PAA) solutions, we systematically altered the layer thickness and bilayer composition to obtain multilayers that contain different amounts of Ru(bpy)32+ polyester (from 46% to 70%). Differences in the Ru(bpy)32+ polyester composition, in turn, influence the device performance dramatically.

Light-emitting devices based on a poly(p-phenylene vinylene) derivative with ion-coordinating side groups

1999 ◽  
Vol 86 (11) ◽  
pp. 6392-6395 ◽  
Author(s):  
J. Morgado ◽  
R. H. Friend ◽  
F. Cacialli ◽  
B. S. Chuah ◽  
S. C. Moratti ◽  
...  
Keyword(s):  
Phenylene Vinylene ◽  
Light Emitting ◽  
Light Emitting Devices

Light emitting devices using poly (p-phenylene vinylene)/porous silicon composites

2001 ◽  
Vol 121 (1-3) ◽  
pp. 1631-1632 ◽  
Author(s):  
M. Lakehal ◽  
T.P. Nguyen ◽  
P. Le Rendu ◽  
P. Joubert ◽  
P. Destruel
Keyword(s):  
Porous Silicon ◽  
Phenylene Vinylene ◽  
Light Emitting ◽  
Light Emitting Devices

Microring light-emitting devices with self-assembled multilayer structures based on poly(p-phenylene vinylene)s

2001 ◽  
Vol 121 (1-3) ◽  
pp. 1739-1740 ◽  
Author(s):  
T. Fujisawa ◽  
T Sonoda ◽  
R. Ootake ◽  
A. Fujii ◽  
K. Yoshino
Keyword(s):  
Multilayer Structures ◽  
Phenylene Vinylene ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Self Assembled

Interlayer Interactions in Self-Assembled Poly(Phenylene Vinylene) Multilayer Heterostructures, Implications for Light-Emitting and Photorectifying Diodes

1994 ◽  
Vol 369 ◽  
Author(s):  
A.C. Fou ◽  
O. Onitsuka ◽  
M. Ferreira ◽  
M.F. Rubner ◽  
B.R. Hsieh
Keyword(s):  
Ultrathin Films ◽  
Self Assembly ◽  
Organic Light Emitting Diodes ◽  
Phenylene Vinylene ◽  
Layer By Layer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Emission Color ◽  
Multilayer Heterostructures ◽  
Self Assembled

AbstractLayer-by-layer molecular self-assembly has been used to fabricate multilayer heterostructures containing poly(phenylene vinylene) (PPV) and a variety of polyanions. These ultrathin films exhibit widely different photoluminescence intensities and peak positions (emission color) depending on the polyanion used. The characteristics of light-emitting devices based on such films are described. This represents the first demonstration of working organic light-emitting diodes, the active layer of which consists of ultrathin, self-assembled films of between 130 - 500 Å

Composites of C60 based poly(phenylene vinylene) dyad and conjugated polymer for polymer light-emitting devices

2002 ◽  
Vol 80 (20) ◽  
pp. 3847-3849 ◽  
Author(s):  
Shu Wang ◽  
Junlin Yang ◽  
Yuliang Li ◽  
Hongzhen Lin ◽  
Zhixin Guo ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Phenylene Vinylene ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Polymer Light Emitting Devices

Monochromatic Red Electroluminescence Based on Copolymer of N-Vinylcarbazole and Eu-Complexed Acrylic Acid

2012 ◽  
Vol 476-478 ◽  
pp. 1416-1420 ◽  
Author(s):  
Wen Guan Zhang ◽  
Hui Pang ◽  
Sheng Min Zhao
Keyword(s):  
Energy Transfer ◽  
Phase Separation ◽  
Acrylic Acid ◽  
Energy Levels ◽  
Europium Complex ◽  
Molar Ratio ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Emission Efficiency ◽  
Molecular Orbit

Europium complexes exhibited intense red fluorescence with a narrow spectral bandwidth (5-10 nm). But non-uniform blending or dispersion of complex resulted in phase separation, decomposition and inefficient energy transfer to reduce emission efficiency. The complexes were covalently attached to the main chain of polymers, which improved film quality and solubility. Eu(TTA)2(AA)phen as europium complex monomer (ECM) was prepared by Eu3+ coordinating with 1,10-phenanthroline (phen), acrylic acid (AA) and 2-thenoyltrifluoroacetone (TTA). Fluorescent polymer marked as p1-30 (molar ratio for ECM/N-vinylcarbazole (NVK), 1/30) was synthesized. The emissions of ECM and p1-30 in the films peaked at ca. 610 nm. The fluorescence lifetime of p1-30 in solid was measured to be 384.58 (τ1) and 802.44 μs (τ2). The highest occupied molecular orbit (HOMO) and the lowest unoccupied molecular orbit (LUMO) energy levels were -5.36 and -1.99 eV. The red organic light-emitting devices (OLED) A ITO/PEDOT: PSS/PBD: p1-30/AlQ3/LiF/Al and B ITO/PEDOT: PSS/PBD: p1-30/BCP/AlQ3/LiF/Al were fabricated. Devices A and B mainly emitted at 614 nm with full width at half maximum (FWHM) of 12.6 nm and exhibited luminance of 375 and 136 cd/m2 with Commission International de L’Eclairage (CIE) coordinates of (0.50, 0.42) and (0.63, 0.35). The copolymer p1-30 had good film quality to avoid phase separation. The emission from the carbazole moieties was suppressed, electroluminescent (EL) spectra revealed that efficient intramolecular energy transfer from carbazole unit to europium complex occurred and that emission efficiency was greatly improved. Device B showed monochromatic red emission.

Heterocycle-substituted poly(p-phenylene vinylene) for light-emitting devices

1998 ◽  
Vol 93 (3) ◽  
pp. 193-195 ◽  
Author(s):  
Shougen Yin ◽  
Junbiao Peng ◽  
Chenxi Li ◽  
Wengqiang Huang ◽  
Xingyuan Liu ◽  
...  
Keyword(s):  
Phenylene Vinylene ◽  
Light Emitting ◽  
Light Emitting Devices
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