LED professional - LED Lighting Technology, Application Magazine

This is a schematic description of processes responsible for light emitting diode (LED) operation. The thick black lines show the energy band diagram of the conventional (a) and proposed (b) LEDs based on GaN/AlN QWs. In the conventional GaN/AlN QW LEDs the polarization field in the GaN layer enhances strongly the rate of the nonradiative Auger processes leading to reduction of the photoluminescence quantum yield and, consequently, to the "droop" effect with increase of the electrical current. In the proposed LEDs (b) the electric ï¬eld acting on holes in the QW is compensated by a gradual composition variation of the variable-gap GaAlN alloy resulting in a flat valence band potential. The Auger processes in these QWs are completely suppressed and no droop effect is expected to be seen in such LEDs. (Credit: U.S. Naval Research Laboratory)

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To complete Thomas Research Products' broad range of standard LED drivers, the have chosen Norlux to develop and produce a family of standard light engines

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Cree Extends Breakthrough XSP Series Street Light Performance to Outdoor Area Lighting

Cree, Inc. (Nasdaq: CREE) is expanding its outdoor lighting portfolio with the new XSP Series Area LED luminaire and the XSPW™ Wall Pack LED luminaire, which ...

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Cree Extends Breakthrough XSP Series Street Light Performance to Outdoor Area Lighting

A Roadmap to Efficient Green-Blue-Ultraviolet LEDs

Scientists at the U.S. Naval Research Laboratory (NRL) have suggested a method that could significantly increase the efficiency of green-blue-ultraviolet ...

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A Roadmap to Efficient Green-Blue-Ultraviolet LEDs

Norlux Develops New Product Line for Thomas Research Products

Norlux LED design services for OEMs were highlighted with the introduction of a line of Light Engines by Thomas Research Products. Norlux is a leading North ...

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Norlux Develops New Product Line for Thomas Research Products

The ECOdrive® family from eldoLED® consists of intelligent, easy-to-configure, high-volume LED drivers

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Philips Lumileds' new LUXEON MZ offers the best combination of brightness, uniformity and luminance enabling precision light control

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Beside the traditional clear, semi-frosted and frosted versions (see image), ALTLED now also offers a linear fresnel version of its T8 LED replacement tubes

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Acuity Brands Begins Production of eldoLED ECOdrive Digital LED Driver Family

Acuity Brands, Inc., a market leader in innovative energy-efficient lighting solutions, announced today the introduction of the ECOdrive® family of LED drivers ...

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Acuity Brands Begins Production of eldoLED ECOdrive Digital LED Driver Family

Willighting's new SMD3014 strips with 210 LEDs/m are available in white, nature white and warm white.

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