Polymer-based light-emitting materials

The fabrication of advanced (multilayer) device architectures is commonly realized by vacuum sublimation as the device efficiency is 

Design of solution-processed devices is often associated with simplification of the device structure. An ideal OLED is reduced to a unique 

To generate the nanopartieles, die pol5mierization process was initiated in water by adding K2S2O8 as an initiator into the emulsion. Device performance remained limited as only a maximum brightness of 260 cd/m at 25 V and a maximiun quantum efficiency (EQE) hardly reaching 1% were obtained. 

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There appear to be two limiting cases to polymer—metal interfaces in the context of materials currendy used in polymer-based light emitting diodes. 

In this book the authors illustrate the basic physics and materials science of conjugated polymers and their interfaces, particularly, but not exclusively, as they are applied to polymer-based light emitting diodes. The approach is to describe the basic physical and associated chemical principles that apply to these materials, which in many instances are different from those that apply to the inorganic counterparts. 

Poly(p-phenylene vinylene), PPV, was used as the electroluminescent material in the first polymer-based light-emitting diode... 

A notable distinction needs to be made. Molecular materials for electronics deals with films or crystals that contain many trillions of molecules per functional unit, the properties of which are measured on the macroscopic scale, while molecular scale electronics deals with one to a few thousand molecules per device. For example, thin film transistors (TFTs) and polymer-based light emitting diodes (LEDs) utilize molecular materials for electronics. The grain size of many of these crystalline features in TFTs and LEDs is in the... 

Phenylene-based polymers are one of the most important classes of conjugated polymers, and have been the subject of extensive research, in particular as the active materials in light-emitting diodes (LEDs) [1,2] and polymer lasers [3]. These materials have been of particular interest as potential blue emitters in such devices [4], The discovery of stable blue-light emitting materials is a major goal of research into luminescent polymers [5]. Poly(para-phenylene) (PPP, Scheme 1, 1) is a blue emitter [6], but it is insoluble and so films of PPP have to be prepared via precursor routes [7]. Substitution with long alkyl... 

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