Scientific Earth Conscientious

Scientific progress makes moral progress a necessity; for if man's power is increased, the checks that restrain him from abusing it must be strengthened (Madame de Stael)

Posts Tagged ‘UGA researchers invent new material for warm-white LEDs. Discovery brings hope to the widespread use of LEDs for indoor lighting’

UGA researchers invent new material for warm-white LEDs. Discovery brings hope to the widespread use of LEDs for indoor lighting

Posted by Scientific Earth Conscientious on January 18, 2013

UGA researchers invent new material for warm-white LEDsLight emitting diodes, more commonly called LEDs, are known for their energy efficiency and durability, but the bluish, cold light of current white LEDs has precluded their widespread use for indoor lighting.

Now, University of Georgia scientists have fabricated what is thought to be the world’s first LED that emits a warm white light using a single light emitting material, or phosphor, with a single emitting center for illumination. The material is described in detail in the current edition of the Nature Publishing Group journal “Light: Science and Applications.”

“Right now, white LEDs are mainly used in flashlights and in automotive lamps, but they give off a bluish, cool light that people tend to dislike, especially in indoor lighting,” said senior author Zhengwei Pan, an associate professor in the department of physics in the UGA Franklin College of Arts and Sciences and in the College of Engineering. “Our material achieves a warm color temperature while at the same time giving highly accurate color rendition, which is something no single-phosphor-converted LED has ever been shown to do.”

Read the rest of this entry »

Posted in RESEARCH / ENVIRONMENTAL PROBLEMS, Uncategorized | Tagged: | Leave a Comment »