There’s a reason why LEDs booming in the lighting world today.
December 27, 2018
Residential LEDs (light emitting diodes) use at least 75%
less energy and last 25 times longer than conventional bulbs, according to the
U.S. Department of Energy.
But what makes LEDs more efficient than conventional bulbs?
The biggest reason why LEDs use so much less energy is that they don’t emit much heat. So compared to incandescent bulbs, which lose about 90% of their energy as heat, and CFLs, which lose about 80%, LEDs are simply less wasteful with their energy.
LEDs’ energy efficiency alone doesn’t make them perfect,
however—there are still R&D challenges to address before LEDs completely
become the light of our lives.
So building on abundant research over the past several years
to improve LED materials, new research continues to push the technology further
No matter how the scientists tried to increase the amount of
indium by growing single atomic layers of indium nitride on gallium nitride,
however, their efforts failed—they couldn’t exceed 25%–30% indium content in
So they took a closer look at what was going on. Atomic
resolution transmission electron microscopy and in-situ reflection high-energy
electron diffraction revealed that actually undergoes an atomic rearrangement
at 25% indium content.
Instead of a predicted structure that bonds indium atoms with three
neighboring atoms, instead favors a structure that bonds indium atoms with four
nearby atoms. While this