Direct Measurement of Ion Redistribution and Resulting Modification of Chemical Equilibria in Polymer Thin Film Light-Emitting Electrochemical Cells

2018 ◽  
Vol 10 (45) ◽  
pp. 39100-39106 ◽  
Author(s):  
Maciej Kawecki ◽  
Roland Hany ◽  
Matthias Diethelm ◽  
Sandra Jenatsch ◽  
Quirin Grossmann ◽  
...  
Keyword(s):  
Thin Film ◽  
Direct Measurement ◽  
Electrochemical Cells ◽  
Polymer Thin Film ◽  
Light Emitting ◽  
Chemical Equilibria

Recent advances in light-emitting electrochemical cells

2011 ◽  
Vol 83 (12) ◽  
pp. 2115-2128 ◽  
Author(s):  
Rubén D. Costa ◽  
Enrique Ortí ◽  
Henk J. Bolink
Keyword(s):  
Thin Film ◽  
Transition Metal Complexes ◽  
Short Review ◽  
Electrochemical Cells ◽  
Luminescent Material ◽  
Chemical Modifications ◽  
Electroluminescent Devices ◽  
Light Emitting ◽  
Ionic Transition ◽  
Scientific Fields

Light-emitting electrochemical cells (LECs) are solution-processable thin-film electroluminescent devices consisting of a luminescent material in an ionic environment. The simplest type of LEC is based on only one material, ionic transition-metal complexes (iTMCs). These materials are of interest for different scientific fields such as chemistry, physics, and technology as selected chemical modifications of iTMCs resulted in crucial breakthroughs for the performance of LECs. This short review highlights the different strategies used to design these compounds with the aim to enhance the performances of LECs.

Synthesis and Luminescence Property of Poly(phenylenevinylene) with Alkoxyl Substituents under the Ultrasonic Irradiation

2012 ◽  
Vol 535-537 ◽  
pp. 1328-1331
Author(s):  
Wen Ding ◽  
Jin Hai Si ◽  
Feng Yun
Keyword(s):  
Thin Film ◽  
Ultrasonic Irradiation ◽  
Luminescence Property ◽  
Structural Defects ◽  
Polymer Thin Film ◽  
Light Emitting ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Polymer Light Emitting Diodes ◽  
Reaction Speed

In this paper, poly [(2-methoxyl-5-octyloxy) Phenylene Vinylene] (MO-PPV) was synthesized by Gilch route under ultrasonic irradiation. The molecular structure, thin film and luminescence property examined through FT-IR, SEm, AFM, UV-Vis spectroscopy and fluorescent spectroscopy, the results showed that the ‘cavitations effect’ caused by the ultrasonic irradiation not only accelerate the reaction speed but also reduce structural defects of the polymer thin film, the synthesized MO-PPV is free of gelatins which is harmful for the polymer’s thin films act as active layer in polymer light-emitting diodes (PLED).

Efficient white polymer light-emitting electrochemical cells

2015 ◽  
Vol 2 (3) ◽  
pp. 338-343 ◽  
Author(s):  
Yan Xiong ◽  
Lu Li ◽  
Jiajie Liang ◽  
Huier Gao ◽  
Shuyu Chou ◽  
...  
Keyword(s):  
Thin Film ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Electrochemical Cell ◽  
Electrochemical Cells ◽  
Light Emitting

An efficient white polymer light-emitting electrochemical cell has been fabricated with a thin-film sandwich architecture of glass/indium tin oxide/electroluminescent layer/aluminum.

Nanocharacterization of Relaxation Properties in Organic Thin Film Electronic Materials

2005 ◽  
Vol 899 ◽  
Author(s):  
Tomoko Gray ◽  
Rene Overney
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Electronic Materials ◽  
Organic Thin Film ◽  
Polymer Thin Film ◽  
Characterization Methods ◽  
Light Emitting ◽  
Force Microscopy ◽  
Nlo Materials ◽  
Thin Film Electronics

AbstractWith increased molecular complexity of organic thin film electronics, novel characterization methods are required to provide nanoscale material property information. Particularly important in polymer thin film electronics are methods characterizing the mobility properties of materials that are in amorphous unsteady states. If the unsteady nature of materials is paired with dimensional and interfacial constraints in anisotropic systems, such as thin films, it produces material systems of great challenges with enormous engineering potentials. Two examples are addressed in this paper, involving desired and undesired supramolecular alignments in polymer thin films, the spectral stability in organic blue-light emitting diodes and the electro-optical (EO) activity in organic non-linear optical (NLO) materials, in conjunction with novel scanning probe microscopy (SFM) based characterization tools. The nanoscopic methods discussed here, i.e., shear modulation force microscopy (SM-FM), and nanoscale isothermal friction analysis (NIFA), offer a quantitative approach for investigating the mobility/stability of organic semiconductor polymer films. Thereby, local properties such as energy barriers for sub-molecular motions (relaxations) and critical transition temperatures can be directly inferred from organic films that are used in actual electronic devices.

Aqueous synthesis of stable and luminescent flexible non-covalently assembled europium(iii) complexes–organoclay films

RSC Advances ◽  
2015 ◽  
Vol 5 (125) ◽  
pp. 103433-103438 ◽  
Author(s):  
Tianren Wang ◽  
Meiqi Liu ◽  
Quan Ji ◽  
Yige Wang
Keyword(s):  
Thin Film ◽  
Hybrid Material ◽  
Red Light ◽  
Polymer Thin Film ◽  
Aqueous Synthesis ◽  
Light Emitting ◽  
Luminescent Polymer

Flexible, transparent and red-light-emitting luminescent polymer thin film derived from Eu(TTA)3-doped hydrophilic hybrid material.

scholarly journals The dynamic behavior of thin-film ionic transition metal complex-based light-emitting electrochemical cells

2014 ◽  
Vol 116 (10) ◽  
pp. 104504 ◽  
Author(s):  
Sebastian B. Meier ◽  
David Hartmann ◽  
Albrecht Winnacker ◽  
Wiebke Sarfert
Keyword(s):  
Thin Film ◽  
Transition Metal ◽  
Metal Complex ◽  
Dynamic Behavior ◽  
Transition Metal Complex ◽  
Electrochemical Cells ◽  
Light Emitting ◽  
Ionic Transition

Discerning the Impact of a Lithium Salt Additive in Thin-Film Light-Emitting Electrochemical Cells with Electrochemical Impedance Spectroscopy

Langmuir ◽  
2016 ◽  
Vol 32 (37) ◽  
pp. 9468-9474 ◽  
Author(s):  
Lyndon D. Bastatas ◽  
Kuo-Yao Lin ◽  
Matthew D. Moore ◽  
Kristin J. Suhr ◽  
Melanie H. Bowler ◽  
...  
Keyword(s):  
Thin Film ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Lithium Salt ◽  
Electrochemical Impedance ◽  
Electrochemical Cells ◽  
Light Emitting ◽  
The Impact

Single Molecule Solid State Light Emitting Electrochemical Cells with Lifetimes Superior to 3000 Hours

2008 ◽  
Author(s):  
Henk Bolink ◽  
Rubén D. Costa ◽  
Enrique Orti ◽  
Michele Sessolo ◽  
Stefan Graber ◽  
...  
Keyword(s):  
Solid State ◽  
Single Molecule ◽  
Electrochemical Cells ◽  
Light Emitting

Effect of Illumination on Organic Polymer Thin-Film Transistors

2003 ◽  
Vol 771 ◽  
Author(s):  
Michael C. Hamilton ◽  
Sandrine Martin ◽  
Jerzy Kanicki
Keyword(s):  
Thin Film ◽  
Thin Film Transistors ◽  
Drain Current ◽  
Charge Carriers ◽  
Electrical Performance ◽  
Organic Polymer ◽  
Light Illumination ◽  
Polymer Thin Film ◽  
Channel Region ◽  
White Light Illumination

AbstractWe have investigated the effects of white-light illumination on the electrical performance of organic polymer thin-film transistors (OP-TFTs). The OFF-state drain current is significantly increased, while the drain current in the strong accumulation regime is relatively unaffected. At the same time, the threshold voltage is decreased and the subthreshold slope is increased, while the field-effect mobility of the charge carriers is not affected. The observed effects are explained in terms of the photogeneration of free charge carriers in the channel region due to the absorbed photons.

A versatile structure of light-emitting electrochemical cells for printed electronics

2020 ◽  
Vol 13 (8) ◽  
pp. 084002
Author(s):  
Yuki Tanaka ◽  
Jiang Pu ◽  
Taishi Takenobu
Keyword(s):  
Printed Electronics ◽  
Electrochemical Cells ◽  
Light Emitting
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