The dependence of quantum efficiency on injected current of InGaN Blue LEDs is examined,which exhibits an efficiency droop with increasing the injected current to a value below the LED's rated current.The theoretical relationship between the quantum efficiency and the injected current is obtained by Matlab based on the Auger nonradiative recombination mechanism.By fitting it with the experimental data,the results show that the efficiency droop can be ascribed to the Auger recombination and the resulting hot...