High Voltage LED operates under low drive current and high forward voltage.Advantages of low current and high voltage operation are: Reduce thermal manageme
Gallium-nitride (GaN)-based light emitting diodes have been wildly used.[1] However,external efficiency of GaN-based LEDs still needs to be improved in orde
In this paper,the light pollution of LED outdoor display is discussed.The main light pollution’s references limits,including light invasion,the glare,the L
In this work,the dislocation-related efficiency droop in InGaN/GaN blue light-emitting diodes (LEDs) was investigated by comparing the external quantum effi
In recent years,governments and some private sector users in countries such as China and others have begun to replace original street lighting,such as sodiu
Lux has been used as the photometric unit of Illuminance for decades,measuring luminous flux per unit area.As it is the measure of light intensity as percei
Indium Tin Oxide (ITO) films are widely used on LED chips nowadays for the applications on ohmic contacts and current diffusion layer of p-GaN.However,ITO f