MIT and Brookhaven Lab scientists use electron microscopy
imaging techniques to settle a solid-state controversy and raise new
experimental possibilities
From the high-resolution glow of flat screen televisions to
light bulbs that last for years, light-emitting diodes (LEDs) continue to
transform technology. The celebrated efficiency and versatility of LEDs—and
other solid-state technologies including laser diodes and solar
photovoltaics—make them increasingly popular. Their full potential, however,
remains untapped, in part because the semiconductor alloys that make these
devices work continue to puzzle scientists.