OLEDs tagged posts

New research from the University of St Andrews paves the way for holographic technology, with the potential to transform smartdevices, communication, gaming and entertainment.

In a study published in Light: Science & Applications, researchers from the School of Physics and Astronomy created a new optoelectronic device from the combined use of holographic metasurfaces (HMs) and organic light-emitting diodes (OLEDs).

Until now, holograms have been created using lasers. However, researchers have found that using OLEDs and HMs gives a simpler and more compact approach that is potentially cheaper and easier to apply, overcoming the main barriers to hologram technology being used more widely.

Organic light-emitting diodes are thin film devices widely used to make the colored pixels...

Novel Strategy for Photopatterning Emissive Polymer Brushes for Organic Light Emitting Diode Applications

From smartphones to TVs and laptops, light emitting diode (LED) displays are ubiquitous. OLEDs (where the O denotes they are organic, or carbon-based) are among the most energy efficient of these devices, but they generally have higher production costs due to the laborious fabrication processes needed to arrange them properly. Today in ACS Central Science, researchers introduce a new way to efficiently create patterns of OLEDs.

In an LED display, the emissions from red, green and blue diodes are blended to create the white and colored light necessary to render images. It is crucially important to precisely position the different types of diodes in relation to one another...

Electronic circuits straight from a pen. Credit: Image courtesy of INM – Leibniz-Institut für Neue Materialien gGmbH

Research scientists at INM have combined the benefits of organic and inorganic electronic materials in a new type of hybrid inks. This allows electronic circuits to be applied to paper directly from a pen, for example. This requires printable electronic materials that can be printed and retain a high level of conductivity during usage in spite of their curved surfaces. Some tried and tested materials include organic, conductive polymers and nanoparticles made of conductive oxides (TCOs).

To create their hybrid inks, they coated nanoparticles made of metals with organic, conductive polymers and suspended them in mixtures of water and alcohol...