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Light Emitting Diodes
Light Emitting Diodes news and technical articles from Laser Focus World. Search Light Emitting Diodes latest and archived news and articles
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LIGHT -EMITTING DIODES : Microlens arrays improve the extraction efficiency of nitride LEDs
… extraction efficiency of quantum-well (QW) light - emitting diodes ( LEDs ) is one of the keys to the quantum efficiency of ..... extraction efficiency of nitride quantum-well LEDs have not been successful in terms of cost, process …
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LIGHT -EMITTING DIODES : Geometry boosts visible LED efficiency
… high-output visible-spectrum light - emitting diodes ( LEDs ) may eventually become practical ..... visible-spectrum encapsulated LEDs that have record optical efficiency ..... phosphide (AlGaInP/GaP), the LEDs have center wavelengths that fall …
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Lithium fluoride insulating layer improves organic light -emitting diodes
… insulating layer improves organic light - emitting diodes An insulating layer of lithium ..... the organic layer of organic light - emitting diodes (OLEDs) has allowed researchers ..... device stability. Organic LEDs based on QAD-doped Alq3 and …
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LIGHT -EMITTING DIODES : Nanorod arrays enable natural-white LEDs
… Indium gallium nitride (InGaN)-based LEDs are currently available only with emission ..... quantum wells. Although white-light LEDs can be fabricated using yellow phosphors ..... research groups have fabricated white-light LEDs in multiple-quantum-well planar InGaN …
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LIGHT -EMITTING DIODES : Nanorod arrays enable natural-white LEDs
… Indium gallium nitride (InGaN)-based LEDs are currently available only with emission ..... quantum wells. Although white-light LEDs can be fabricated using yellow phosphors ..... research groups have fabricated white-light LEDs in multiple-quantum-well planar InGaN …
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LIGHT -EMITTING DIODES : Pick the right parameters to measure LEDs accurately
… Nägele When it comes to measuring light - emitting diodes ( LEDs ), most people think only of ..... spectral power distribution of LEDs differs in several aspects from ..... and photometric quantities of LEDs . Spectroradiometers record the …
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LIGHT -EMITTING DIODES : Deep-UV LEDs appear on the market
… company’s deep-UV III-nitride-based LEDs are the only ones on the market, and range ..... aluminum indium gallium nitride (AlInGaN) LEDs by coming up with ways to increase the ..... invented new design rules for deep-UV LEDs that have increased the efficiency of the …
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Room temperature, surface-emitting light -emitting diodes exceed 2-GH¥bandwidth
… temperature, surface-emitting light - emitting diodes exceed 2-GH¥bandwidth ..... demonstrated GaAs surface-emitting light - emitting diodes ( LEDs ) with bandwidths in excess ..... external efficiencies. The LEDs , which operate at room temperature …
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WIPO PUBLISHES PATENT OF THE REGENTS OF THE UNIVERSITY OF CALIFORNIA FOR "METHOD FOR FABRICATION OF (AL, IN, GA) NITRIDE BASED VERTICAL LIGHT EMITTING DIODES WITH ENHANCED CURRENT SPREADING OF N-TYPE ...
… published on May 3. Title of the invention: "METHOD FOR FABRICATION OF (AL, IN, GA) NITRIDE BASED VERTICAL LIGHT EMITTING DIODES WITH ENHANCED CURRENT SPREADING OF N-TYPE ELECTRODE." Applicants: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA …
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Sources For Illumination: White-light LEDs range from ‘warm’ to ‘cool’
Light - emitting diodes provide white light with ..... clusters and phosphor-coated LEDs . Choosing the best approach ..... indicator lamps in the 1960s, LEDs have become increasingly ..... and possibly HID lamps with LEDs . It has been estimated that …
