Latest Tech News On LED & OLED Research

Graphene LEDs

The University of Manchester has made LEDs using a quantum well heterostructure made from 2d materials including graphene, boron nitride, and molybdenum disulphide. Efficiency isn’t far behind OLEDs. For more, scroll to the bottom of this graphene led story on the main Electronics Weekly website…

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EU 3d led project gets institutionalised

Out of the European Union GECCO project to grow bristle-like light emitting nanowires, to form ’3d nano-leds’, has come an organisation to continue the work. Called Epitaxy Competence Centre (ec2), it is a joint venture between Osram Opto Semiconductors and the Institute of Semiconductor Technology (floors 8-10…

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Osram starts to bridge green gap

Slightly old story here – but most interesting. High-efficiency green leds have come out of Hi-Q-LED, a German federally*-funded project co-ordinated by Osram Opto Semi. The ‘green gap’ is a spectral region for which it is difficult to make efficient leds (see graph). From Hi-Q…

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LED panel enables decoding of invisible images

Soon you could have access to secret information just by waving your hand, writes Sandrine Ceurstemont, editor, New Scientist TV. New digital signage allows you to decode invisible images by quickly moving your fingers in front of the screen. The system, developed by Hirotsugu Yamamoto and colleagues from University of…

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LEDs serve broadband communications

Edinburgh start-up Visible Light Communications (VLC) is focussing on using flickering LEDs instead of WiFi for broadband communications, writes David Manners.   Speeds of up to 500Mbits/sec have been achieved for the technology, called Li-Fi, but the first product from VLC – a consumer transmitter – will deliver data at…

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OLEDs with color temp spectrum of sunlight - Update

We briefly flagged, very recently, research carried out at the National Tsing Hua University in Taiwan, into organic LEDs with a full range of colour temperatures. They were capable of copying the full spectrum of sunlight throughout the day (2500 K – 8000 K) – Taiwan researchers create OLEDs with color temp…

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