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Degradation of light emitting diodes: a proposed methodology

Sau Koh, Willem Van Driel and G. Q. Zhang

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DOI: 10.1088/1674-4926/32/1/014004

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Abstract: Due to their long lifetime and high efficacy, light emitting diodes have the potential to revolutionize the illumination industry. However, self heat and high environmental temperature which will lead to increased junction temperature and degradation due to electrical overstress can shorten the life of the light emitting diode. In this research, a methodology to investigate the degradation of the LED emitter has been proposed. The epoxy lens of the emitter can be modelled using simplified Eyring methods whereas an equation has been proposed for describing the degradation of the LED emitters.

Key words: LED, light, degradation, lumen, overstress current, temperature

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    Received: 18 August 2015 Revised: Online: Published: 01 January 2011

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      Article Navigation >  Journal of Semiconductors  > 2011  >  32(1): 014004
      Sau Koh, Willem Van Driel, G. Q. Zhang. Degradation of light emitting diodes: a proposed methodology[J]. Journal of Semiconductors, 2011, 32(1): 014004. doi: 10.1088/1674-4926/32/1/014004 ****S Koh, W V Driel, G Q Zhang. Degradation of light emitting diodes: a proposed methodology[J]. J. Semicond., 2011, 32(1): 014004. doi:  10.1088/1674-4926/32/1/014004.
      Citation:
      Sau Koh, Willem Van Driel, G. Q. Zhang. Degradation of light emitting diodes: a proposed methodology[J]. Journal of Semiconductors, 2011, 32(1): 014004. doi: 10.1088/1674-4926/32/1/014004 ****
      S Koh, W V Driel, G Q Zhang. Degradation of light emitting diodes: a proposed methodology[J]. J. Semicond., 2011, 32(1): 014004. doi:  10.1088/1674-4926/32/1/014004.
      shu

      Degradation of light emitting diodes: a proposed methodology

      DOI: 10.1088/1674-4926/32/1/014004

      • Delft Institute of Microsystems and Nanoelectronics (Dimes), Delft University of Technology, Mekelweg 6, 2628CD Delft, Netherlands

      • Materials Innovation Institute (M2i), Mekelweg 2, 2628 CD, Delft, Netherlands

      • Delft Institute of Microsystems and Nanoelectronics (Dimes), Delft University of Technology, Mekelweg 6, 2628CD Delft, Netherlands

      • Materials Innovation Institute (M2i), Mekelweg 2, 2628 CD, Delft, Netherlands

      • Philips Lighting, LightLabs, NL-5611BD, Eind

      • Delft Institute of Microsystems and Nanoelectronics (Dimes), Delft University of Technology, Mekelweg 6, 2628CD Delft, Netherlands

      • Received Date: 2015-08-18

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