Rockefeller Center is proposing to rip out its glowing glass signage in favor of LEDs. It joins a heap of others.

Screens for TVs, smartphones or other displays could be made with a new kind of organic LED material developed by an ...

A group of scientists led by India's National ... and a power conversion efficiency of 40% under indoor warm white compact fluorescent lamp (CFL) illumination. As for stability, the academics ...