Since OLEDs don't need to be sandwiched between glass, they can be sprayed onto a wide variety of flexible surfaces, making them durable, flexible and cheap.

FORBES: Seeing the Light

The carbon amalgam can be applied from solution using simple methods, meaning the flexible cells could be used to coat surfaces, although you won't be seeing it smeared over anything too soon.

ENGADGET: Stanford researchers create 'world's first' all-carbon solar cell, do it on the cheap