World’s first warm white LED to use single phosphor with single
emitting center Breakthrough could lead to widespread use of
LEDs for indoor lighting University of Georgia researchers have
published a report that details the fabrication of the world’s
first light emitting diode (LED) to emit a warm white light
using a single light emitting material (phosphor) with a single
emitting center for illumination. The University of Georgia’s
Zhengwei Pan, center, an associate professor of physics and
engineering, holds a prototype of what is thought to be the
world’s first single-phosphor, single-emitting-center-converted
LED that emits a warm white light while the UGA College of
Engineering’s Feng Liu, left, and Xufan Li look on. (Credit:
John Paul Gallagher/UGA) “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 p