1. Researchers develop low-cost, efficient LED lighting

Researchers develop low-cost, efficient LED lighting

At a time when existing LEDs are helping to keep electricity bills low, a group of scientists has developed a more efficient and low-cost alternative to the materials used in traditional LEDs.

By: | New York | Published: January 17, 2017 3:39 PM
Nanoscale perovskite particles self-assemble to produce more efficient, stable and durable perovskite-based LEDs. (Reuters) Nanoscale perovskite particles self-assemble to produce more efficient, stable and durable perovskite-based LEDs. (Representative Image: Reuters)

At a time when existing LEDs are helping to keep electricity bills low, a group of scientists has developed a more efficient and low-cost alternative to the materials used in traditional LEDs. Princeton engineering researchers refined the manufacturing of light sources made with crystalline substances known as perovskites that provide more efficiency, lower-cost and long life to the new LEDs.

In this technique, nanoscale perovskite particles self-assemble to produce more efficient, stable and durable perovskite-based LEDs and the working was published in journal Nature Photonics.

“Our new technique allows these nanoparticles to self-assemble to create ultra-fine grained films, an advance in fabrication that makes perovskite LEDs look more like a viable alternative to existing technologies,” said lead researcher Barry Rand.

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Rand’s team and others researchers are exploring perovskites as a potential lower-cost alternative to gallium nitride (GaN) and other materials used in LED manufacturing. Lower-cost LEDs would speed the acceptance of the bulbs, reducing energy use and environmental impacts.

Perovskite is a mineral originally discovered in the mid-1800s in Russia and named in honour of the Russian mineralogist Lev Perovski.

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