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U.S. Department of Energy Energy Efficiency and Renewable Energy

Research Highlights 2009-2010

Photo of an LED: a bright phosphor-coated disk atop a circuit board

OSRAM SYLVANIA Demonstrates 1,439-Lumen Downlight with Efficacy of 82 lm/W

OSRAM SYLVANIA researchers have demonstrated a downlight luminaire that achieves 1,439 lumens at an efficacy of 82 lm/W in steady-state operation. These results exceed the project goals of achieving 1,300 lumens and 70 lm/W at a CCT of 3500K and CRI of 80. (September 2010) Learn more.
Photo of two bright ceiling-mounted OLED luminaires

UDC Demonstrates Phosphorescent OLED Systems

Universal Display Corporation (UDC), along with project partners Armstrong World Industries and the universities of Michigan and Southern California, have successfully demonstrated two phosphorescent OLED (PHOLED™) luminaire systems, the first of their kind in the U.S. This achievement marks a critical step in the development of practical OLED lighting in a complete luminaire system, including decorative housing, power supply, mounting, and maintenance provisions. (August 2010) Learn more.
Photo of an LED: a yellow dome atop a square substrate

Cree's High-Power White LED Delivers 121 lm/W

Cree's commercial high-power white LEDs can now deliver 121 lm/W at 35A/cm2 current density. These XLamp XP-G LEDs are based on Cree's latest generation EZBright® LED chip platform, the first generation of which was developed in part with funding from DOE. (August 2010) Learn more.
Photo of an LED: a yellow semi-globe atop a rectangular substrate

Philips Lumileds Achieves 139 lm/W in a Neutral White LED

Philips Lumileds' LUXEON Rebel LED can now deliver 139 lm/W in a neutral white LED. The top bin LED, developed with a single InGaN die and phosphor conversion, shows high-performance characteristics up to 139 lm/W and 138 lumens at 350 mA, with a forward voltage of 2.83 V. The CCT of the device is 5385K and the CRI is 70. (August 2010) Learn more.
Photo of the front view of an unlit downlight with a coated dome.

New Class of Quantum Dots Makes the Leap from SBIR Project to Small-Business Market Success

Renaissance Lighting, an American small business headquartered in Herndon, Virginia, showcased the SoliaTM lamp, an innovative downlight, at the May 2010 LIGHTFAIR, becoming the first manufacturer to apply a new phosphor-converted LED technology with superior lumen efficacy and color rendering, and offering warm color temperatures. (May 2010) Learn more.

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