Pacific Northwest National Laboratory announced a new host materials for a blue phosphorescent OLED boost efficiency by at least 25 percent and help solve "weakest link" in development of cost-effective white OLEDs.
The weakest link in OLED research is the absence of an efficient, long-lasting blue light to accompany the red and green," said Pacific Northwest National Laboratory scientist Asanga Padmaperuma. Development of better host materials to manage the flow of electricity through the device could help solve that problem.
Padmaperuma and his collegues have designed, synthesized and tested new materials that improve the power efficiency of blue OLEDs by at least 25 percent.
The most promising technology is the organic light-emitting diode, or OLED. These multi-layered devices produce light by running an electrical current through a specially engineered host material into which light-producing phosphorescent molecules are embedded or "doped." The white light envisioned for large-scale applications, such as rooms and buildings, consists of red, green and blue light.
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Philips show transparent OLED lighting prototype
Scientists at Philips Research are currently progressing towards the development of transparent OLEDs. Now Philips show us some picture from the new windows as light application.This means OLED panels could function as ordinary windows during the day and then morph into panels of light after dark, either by imitating natural light or by emitting attractive interior lighting.
During the day, people would be able to create their own private area by turningtransparent glass walls, windows or doors into walls of light whenever they liked. Transparent OLED panels are expected to emerge onto the market within the next 3to 5 years.
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