Optical noise model on the example of infrared light-emitting diodes
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Date
2023
Advisor
Journal Title
Journal ISSN
Volume Title
Publisher
КПІ ім. Ігоря Сікорського
Abstract
Almostalllight-emittingdiodes(LEDs)applicationsexpectstableandlongdeviceoperation. Thus, advances in LED quality and lifetime improvement are point of interest between manufacturers. Presence of the defects leads to the injected electron–hole pairs capture and their nonradiative recombination that lowers the efficiency of the light-emitting device and accelerates device aging. There is a strong correlation between defects of an LED (and as a result of its lifetime) and its low-frequency noise. Thus, research of electrical and optical noise of LEDs is of interest from both a scientific and an engineering point of view. In this work a model to describe optical noise in LEDs is discussed, as well as its validity on the example of infrared LEDs has been proved. In addition, the article also contains possible interpretation of the obtained results and measurement of several experimental samples with different noise characteristics.
Description
Keywords
optical noise, infrared LEDs, noise model
Citation
Optical noise model on the example of infrared light-emitting diodes / Danylo Bohomolov, Vita Ivanova, Hennadii Monastyrskyi, Ulrich T. Schwarz // XXI Всеукраїнська науково-практична конференція студентів, аспірантів та молодих вчених «Теоретичні і прикладні проблеми фізики, математики та інформатики» (Україна, м. Київ, 11-12 травня 2023 р.) : матеріали конференції. – Київ : КПІ ім. Ігоря Сікорського, 2023. – С. 13-16.