• DocumentCode
    2751624
  • Title

    Investigation of the efficiency-droop mechanism in a GaN based blue light-emitting diodes using a very-fast electrical-optical pump-probe technique

  • Author

    Shi, J. -W ; Lin, Che-Wei ; Chen, Wei ; Lee, M.L. ; Sheu, J.-K.

  • Author_Institution
    Dept. of Electr. Eng., Nat. Central Univ., Chungli, Taiwan
  • fYear
    2011
  • fDate
    9-13 Oct. 2011
  • Firstpage
    709
  • Lastpage
    710
  • Abstract
    Electrical-optical pump-probe is used to investigate GaN blue LEDs under different temperatures. Measurement result indicates that under moderate current density (~200A/cm2) piezoelectric field induced carrier-escaping cannot be neglected and is responsible for the observed efficiency-droop.
  • Keywords
    III-V semiconductors; gallium compounds; high-speed optical techniques; light emitting diodes; wide band gap semiconductors; LED; blue light-emitting diodes; efficiency-droop mechanism; electrical-optical pump-probe; piezoelectric field; Current density; Gallium nitride; Light emitting diodes; Power generation; Power measurement; Temperature measurement;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Photonics Conference (PHO), 2011 IEEE
  • Conference_Location
    Arlington, VA
  • Print_ISBN
    978-1-4244-8940-4
  • Type

    conf

  • DOI
    10.1109/PHO.2011.6110747
  • Filename
    6110747
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2751624