Electroluminescence Characterization of ($20\bar{2}1$) InGaN/GaN Light Emitting Diodes with Various Wavelengths

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概要

• 論文の詳細を見る

• The optical characteristics of InGaN/GaN light emitting diodes (LEDs) grown on ($20\bar{2}1$) bulk GaN substrates with wavelengths 469, 487, 510, and 528 nm were investigated. From 2 to 100 mA, the peak emission wavelength for green LEDs blue-shifted by 6.2 nm. Emission spectra widths were almost independent of the injection current. These results suggest that ($20\bar{2}1$) LEDs have a smaller polarization field and smaller indium fluctuations in the quantum wells. Optical polarization ratios for the LEDs varied between 0.4 and 0.5, which are larger than reported values. A weak dependence of the polarization ratio on the indium composition was observed.

• 2010-07-25

著者

• Lin You-da

  Electrical And Computer Engineering And Materials Departments University Of California

• DENBAARS Steven

  Materials Department and Electrical Engineering Department, University of California

• Ohta Hiroaki

  Materials Department University Of California

• Koslow Ingrid

  Materials Department University Of California

• Nakamura Shuji

  Materials Department University Of Cahfornia

• PFAFF Nathan

  Materials Department, University of California, Santa Barbara

• Lin You-Da

  Electrical and Computer Engineering Department, University of California, Santa Barbara, CA 93106, U.S.A.

• Chung Roy

  Materials Department, University of California, Santa Barbara, CA 93106, U.S.A.

• Ohta Hiroaki

  Materials Department, University of California, Santa Barbara, CA 93106, U.S.A.

• Ha Junseok

  Materials Department, University of California, Santa Barbara, CA 93106, U.S.A.

• DenBaars Steven

  Materials Department and Electrical and Computer Engineering Department, University of California, Santa Barbara, CA 93106, U.S.A.

• Koslow Ingrid

  Materials Department, University of California, Santa Barbara, CA 93106, U.S.A.

• Pfaff Nathan

  Materials Department and Electrical and Computer Engineering Department, University of California, Santa Barbara, CA 93106, U.S.A.

• Chung Roy

  Materials Department and Electrical and Computer Engineering Department, University of California, Santa Barbara, CA 93106, U.S.A.

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