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

Building Technologies Office – R&D Projects

Research Highlights 2003-2004


Photo of a gold circular medallion with illegible writing around the top edge and an image of a man holding something in his hand.

LED Pioneers Honored

In November 2003, two of DOE's research partners – Dr. George Craford of Lumileds Lighting and Russell Dupuis of Georgia Institute of Technology – were awarded the 2002 National Medal of Technology. These pioneers were honored for their contributions to the development and commercialization of LED technology. (November 2003)

Photo of a rectangular white light panel containing grid lines being held by a person on the left (you only see one of the person's hands), shining the light onto a table to the right containing multi-colored balls.

Size and Performance Breakthroughs in OLED Panels

General Electric Global Research teamed with Cambridge Display Technologies to develop a practical-sized OLED light panel that produces 1200 lumens of quality white light with an efficacy of 15 lumens/watt – on par with today's incandescent bulb technology. This achievement broke two world records. (April 2004) Learn more.

Photo of an LED resembling a gear with six teeth, with what looks like a glass rectangle in each of the teeth, and a brilliant white ball in the center.

White LED Breakthroughs in Performance, Quality

Lumileds Lighting teamed with Sandia National Laboratories to investigate critical materials issues, including the use of semiconductor nanoparticles ("quantum dots") as luminescent down-converting materials for white LEDs. The nanoparticles produced conversion yields up to 76 percent, a world record. (April 2004) Learn more.

Photo of a rectangle with pink and purple streaks.

Cantilever Epitaxy R&D 100 Award

Sandia National Laboratories received an R&D 100 Award from R&D Magazine for development of a new process for growing gallium nitride on an etched sapphire substrate. The process, called cantilever epitaxy, promises to make brighter and more efficient green, blue, and white LEDs. (October 2004) Learn more.

Photo of a woman's head in a dark room looking at a square object containing two horizontal rows of bright white circles of light, with a row of what appears to be white text in the middle.

Low Voltage White Phosphorescent OLED Achievements

Universal Display Corporation teamed with Princeton University and the University of Southern California to develop low voltage, high efficiency white phosphorescent OLEDs (PHOLED™). The team succeeded in developing a white PHOLED that achieved a record 20 lumens per watt, operating at 6.3 V. (October 2004) Learn more.

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