Study on Junction Temperature Management of White pcLED at High Ambient Temperature in Industrial Environment: An Indian Perspective

Now a day in our daily indoor-outdoor applications as well as industrial applications the semiconductor lighting system i.e. white pcLED has become very cheap and reliable solution. We have come across a long journey where we start re-placing incandescent lamps, and fluorescent lamps by LEDs, But its main drawback is junction temperature rise while operating in high ambient temperatures like in hot mills, furnace rooms etc and several industries where temperature fluctuates above 100°C. The light output of white pcLED in such places gradually degrades fast, as junction temperature increases with prolonged application of high ambient temperature. This study demonstrates a new method where the junction temperature is monitored by changing the width of quantum well i.e. In
_y
Ga
_1-y
N layer of semiconductor part i.e., GaN/Al
_x
Ga
_1-x
N/In
_y
Ga1
_y
N of white pcLED. The simulation is done using Silvaco ATLAS-Device Simulation Software V 4.3.0.R, while considering a high range of ambient temperature i.e. 100°C to 223°C.