Enhancement in external quantum efficiency of blue light-emitting diode by photonic crystal surface grating

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Enhancement in external quantum efficiency of blue light-emitting diode by photonic crystal surface grating

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Blue photonic crystal light-emitting diodes were evaluated with photonic crystal hole patterns. The diameter of the holes, lattice constant, and emission wavelength were selected to be 110, 220 and 450 nm, respectively, to attain a maximum enhancement in the wall-plug efficiency. The improvement in external quantum efficiency was 30–50%. Changes in voltage characteristics caused by the etched holes were found to be correlated with increased leakage current.

Inspec keywords: leakage currents; light emitting diodes; photonic crystals; optical materials

Other keywords: blue light-emitting diode; wall-plug efficiency; photonic crystal surface grating; 450 nm; hole patterns; voltage characteristics; external quantum efficiency; etched holes; leakage current; 220 nm; 110 nm

Subjects: Optical materials; Light emitting diodes

References

    1. 1)
    2. 2)
    3. 3)
      • C. Huh . Improved light-output and electrical performance of InGaN-based lighting-emitting diode by microroughening of p-GaN surface. Appl. Phys. Lett. , 11 , 9383 - 9385
    4. 4)
    5. 5)
      • T.H. Hsueh . Enhancement in light output of InGaN-based microhole array light-emitting diodes. IEEE Photonics Technol. Lett. , 6 , 1163 - 1165
    6. 6)
    7. 7)
      • Muller, G.: `White light emitting diodes', Light Emitting Diodes 2003, October 2003, San Diego, CA, USA, Optical Industry Development Association (OIDA) Tech. Roadmaps.
    8. 8)
      • Chen, L., Nurmikko, V.A., Krames, M.: `Highly efficient light emission from III-nitride photonic crystal', Conf. on Lasers and Electro-Optics (CLEO), 2004, San Francisco, CA, USA.
    9. 9)
    10. 10)
      • H. Ishikawa , T. Baba . Efficiency enhancement in a light-emitting diode with a two-dimensional surface-grating photonic crystal. Appl. Phys. Lett. , 4 , 457 - 459
    11. 11)
      • M. Boroditsky . Spontaneous emission extraction and Purcell enhancement from thin-film 2-D photonic crystals. J. Light Tech. , 11 , 2096 - 2112
    12. 12)
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