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'Most powerful' infra-red LEDs

LED Engin has announced a quad die infra-red LED emitting 4.5W of flux, from 850nm and 940nm variants. “The four die parts are the world’s most powerful IR emitters,” said the firm, which has also released some deep red emitters. Called LZ4, the IR LEDs have a…

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IR LED hits 48% electro-optic efficiency

Osram Opto achieved typical electro-optical efficiency of 48% with its 850nm Oslon Black SFH 4715A infra-red power LED, which is intended for security illumination. “We are not aware of any other opto-electronic component with an optical efficiency to rival this one. SFH 4715A can almost match a…

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Flexible and transparent OLEDs at LG

LG Display has developed an 18inch flexible OLED display, and another one that is flat, but transparent. The flexible display has 1,200×810 resolution and can be rolled around a 60mm cylinder while working – made possible in part by using a polyimide film substrate and organic thin-film transistors. “This…

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Perovskite solar cells in three years, from UK inventions

Solar cells using upstart ‘perovskite’ materials will be shipping in three years, according to University of Oxford spin-out Oxford PV. Photovoltaic perovskites were only invented recently. “It is the fastest-improving solar cell material ever,” CEO Kevin Arthur told Electronics Weekly. “It has taken silicon 25 years to get…

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50W blue laser module for projectors

Osram is packing up to 20 blue laser chips into 26x35mm for laser projectors, delivering up to 50W. “This means that professional laser projectors can achieve a brightness level of more than 2000 lm with only one component,” said the firm, adding: “Osram developers are the first to adapt the…

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Sharp offers any-shape displays

Sharp has developed free-form LCD – displays that are not limited to being rectangular. “The device can be shaped to meet a wide range of user needs thanks to the incorporation of IGZO [indium gallium zinc oxide] technology and proprietary circuit design methods,” said the firm. The gate driver is…

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Plessey prepares for LED lighting push

Plessey Semiconductor seems to be gearing up for increased production of its GaN-on-silicon LED devices. Plymouth-based Plessey has upgraded its production facility by buying the latest Temescal UEFC-4900 material deposition system from Ferrotec. Plessey manufactures LEDs on 6-inch wafers using a GaN-on-silicon process…

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