Advances in the LED materials and architectures for energy-saving solid-state lighting toward lighting revolution

In this paper, we review the recent developments (in years 2010-2011) of energy-saving solid-state lighting. The industry of white light-emitting diodes (LEDs) has made significant progress, and today, white LED market is increasing (mostly with increasing LED screen and LED TV sales). The so-called lighting revolution has not yet really happened on a wide scale because of the lighting efficiency at a given ownership cost. Nevertheless, the rapid development of the white LEDs is expected to soon trigger and expand the revolution. © 2012 IEEE