Semiconductor Physics, Quantum Electronics & Optoelectronics, 28 (3), P. 360–366 (2025).
DOI: https://doi.org/10.15407/spqeo28.03.360
The influence of temperature and current on the spectral and luminous characteristics of high-power LEDs
A.M. Minyaylo1, D.V. Pekur1*, Yu.E. Nikolaenko2, O.M. Kamuz1
1V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Department of Optoelectronics, 41 Prosp. Nauky, 03680 Kyiv, Ukraine
2National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Institute of Atomic and Thermal Energy, 37 Beresteiskyi Avenue, 03056 Kyiv, Ukraine
*Corresponding author e-mail: demid.pekur@gmail.com
Abstract. This article aims to investigate the influence of temperature and drive current on the spectral and photometric characteristics of high-power Chip-on-Board (COB) LEDs. An analysis of variations in luminous flux, correlated color temperature (CCT), and color rendering index (CRI) is presented, accompanied by the development of analytical models describing their behavior. To achieve an accurate mathematical representation, a regression analysis method is proposed, enabling the formulation of precise theoretical dependences of luminous flux and CCT on the operating temperature and current of LEDs. The obtained results provide a scientific foundation for designing the energy-efficient lighting systems with stabilized photometric characteristics, suitable for industrial, biomedical, and photobiological applications. Furthermore, the findings offer promising opportunities for real-time prediction of temperature-induced degradation in LED performance.
Keywords: LED, luminous flux, correlated color temperature, color rendering index.
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