Princeton Perovskite LED Breakthrough

A new form of LEDs, made of a class of materials called halide perovskites, promises higher color quality and ease of manufacture, but has been known to fail when subjected to the kind of electrical current typically needed for practical uses.

Now, Barry Rand, associate professor of electrical engineering and the Andlinger Center for Energy and the Environment, and a team of researchers have significantly improved the material’s stability and performance by better managing the heat generated by the LEDs.

Until now, researchers had thought perovskite LEDs would be useful for producing only moderate levels of brightness, but not for lighting or ultra-bright displays on cell phones and laptop screens.