Дослідження оптико-електричних та теплових характеристик світлодіодів RGB

Translated title of the contribution: Investigations on the Optical-Electrical-Thermal Characteristics of RGB LEDs

Research output: Contribution to journalArticlepeer-review

Abstract

Heat dissipation is the main problem of concern when working with high power light emitting diodes. If not controlled, the optical and electrical performance of the luminaire can get affected. A higher junction temperature induces variations in forward voltage, luminous lux, correlated color temperature, color point and peak wavelength. LED manufacturers have their operating ranges for junction temperature and driving current. Operating LEDs beyond the operating range of current may initially provide high luminous flux, but junction temperature might increase beyond the range specified, resulting in very fast degradation of luminous flux. Also, elevated junction temperatures can severely affect the lifetime and reliability of LEDs. Hence, measurement and control of junction temperature within the maximum operating range through appropriate thermal design are vital for avoiding performance degradation of the LED luminaire. This paper shows an insight on the experimentations carried out to measure the junction temperature and analyze its effect on the electrical and optical parameters of RGB LEDs within the maximum operating temperature.

Translated title of the contributionInvestigations on the Optical-Electrical-Thermal Characteristics of RGB LEDs
Original languageRussian
Pages (from-to)03013-1-03013-4
JournalJournal of Nano- and Electronic Physics
Volume13
Issue number3
DOIs
Publication statusPublished - 2021

All Science Journal Classification (ASJC) codes

  • Radiation
  • General Materials Science
  • Condensed Matter Physics

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