[an error occurred while processing this directive] BBC News
watch One-Minute World News Natural light 'to reinvent bulbs'
Light bulb in front of a clock The clock is ticking for light
bulbs A light source that could put the traditional light bulb
in the shade has been invented by US scientists.  The organic
light-emitting diode (OLED) emits a brilliant white light when
attached to an electricity supply.  The material, described in
the journal Nature, can be printed in wafer thin sheets that
could transform walls, ceilings or even furniture into lights.
The OLEDs do not heat up like today's light bulbs and so are far
more energy efficient and should last longer.  They also produce
a light that is more akin to natural daylight than traditional
bulbs.  "We're hoping that this will lead to significantly
longer device lifetimes in addition to higher efficiency," said
Professor Mark Thompson of the University of Southern
California, one of the authors of the paper.  Old fashioned
Traditional light bulbs were inv