Determining Method for Lighting Characteristics LEDs
https://doi.org/10.26583/vestnik.2025.5.6
EDN: SUKDFZ
Abstract
The article presents a technique for analyzing the lighting characteristics of light-emitting diodes (hereinafter referred to as LEDs), which are represented by a wide range of materials of the AIIIBV group, with or without quantum wells, based on heterostructures or using a single-crystal material. This technique is intended for analyzing and rejecting LEDs, determining their individual proportionality coefficients, which allow for a targeted study of degradation processes in LEDs caused by various destructive effects. It is shown that characteristic regions of the operating current flow are distinguished on the L-I characteristic: the region of low currents LC, the region of the ohmic resistance of the LED - R region, the region of high currents HC, which are characterized by their own proportionality coefficients and have their own physical meaning. Physical and mathematical relationships are determined that describe the change in the output radiation power with an increase in the forward current for LEDs made of the listed materials. The application of this technique with a quantitative assessment of radiation power losses for a selected LED type in the LC and HC regions is shown. The dependence of the LED radiation power losses in the HC region on the operating current is shown. The presented method for assessing the lighting characteristics of LEDs is relevant in the case of exposure to special factors (ionizing radiation, long-term operation, electric fields, etc.), where losses in radiation power will be caused by the induced introduction of non-radiative recombination centers.
Supporting agencies: This work was funded by the R&D program "Development of new implantation methods for producing dielectric intermediate layers in semiconductor substrates for thermonuclear control systems" No. 25, dated January 9, 2025.
About the Authors
K. N. Orlova
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
A. V. Gradoboev
National Research Tomsk Polytechnic University
Russian Federation
Russian Federation
A. V. Beklemisheva
National Research Center “Kurchatov Institute”
Russian Federation
Russian Federation
A. R. Avanesyan
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
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For citations:
Orlova K.N., Gradoboev A.V., Beklemisheva A.V., Avanesyan A.R. Determining Method for Lighting Characteristics LEDs. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2025;14(5):431-439. (In Russ.) https://doi.org/10.26583/vestnik.2025.5.6. EDN: SUKDFZ
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