Abstract

The results of the study of changes in the dynamic characteristics of various spectral components of the full electroluminescence spectrum of green LEDs based on InGaN during tests with a pulsed current of increased density are presented. It was found that there is a decrease in the radiation power of the LED after 200 hours, as well as a decrease in the frequency of modulation of electroluminescence by 3 dB. It was found that a frequency change of 3 dB in the short-wavelength components of the spectrum is much larger than the long-wavelength ones. The results obtained indicate that the process of defect formation during testing proceeds more intensively in areas of a heterostructure with a low In concentration.

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