“…White light-emitting diodes (WLEDs), as an emerging solid state lighting (SSL) source, offers benefits in terms of reliability, energy saving, maintenance and positive environment effects and stands a real chance of replacing the traditional light sources such as incandescent and fluorescent lamps [1][2][3]. Now a days most of the commercial solid-state devices are using nearly monochromatic blue emission from GaN based LEDs to excite yellow-green emission from Ce 3+ -doped yttrium aluminum garnet (YAG:Ce) phosphors.…”