Green Semipolar (20\bar{2}\bar{1}) InGaN Light-Emitting Diodes with Small Wavelength Shift and Narrow Spectral Linewidth
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概要
- 論文の詳細を見る
We study the optical spectral properties for green semipolar (20\bar{2}\bar{1}) and (20\bar{2}1) light-emitting diode (LED) with same indium compositions. Compared to (20\bar{2}1) devices, the fabricated (20\bar{2}\bar{1}) micro-LED ({\sim}0.005 mm<sup>2</sup>) showed negligible blue shift and smaller full width at half maximum (FWHM) up to extremely high current densities (10,000 A/cm<sup>2</sup>). Theoretical simulation indicates that the (20\bar{2}\bar{1}) InGaN quantum well (QW) has reduced polarization-related effects due to combined effects of electric field cancelling and Coulomb screening effect. In addition, the packaged device performance for small-area ({\sim}0.144 mm<sup>2</sup>) semipolar green (20\bar{2}\bar{1}) and (20\bar{2}1) LEDs were also discussed. The green (20\bar{2}\bar{1}) LED showed smaller wavelength shift and narrower FWHM than green LEDs fabricated on other planes.
- 2013-06-25
著者
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Nakamura Shuji
Materials Department University Of Cahfornia
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Tanaka Shinichi
Materials Department University Of California
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Zhao Yuji
Materials Department University Of California
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Wu Feng
Materials Department, University of California, Santa Barbara, CA 93106, U.S.A.
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Wu Feng
Materials Department and NICP ERATO/JST Group, University of California, Santa Barbara, CA 93106, U.S.A.
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Speck James
Materials Department and Electrical and Computer Engineering Department, University of California, Santa Barbara, CA 93106, U.S.A.
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Fujito Kenji
Optoelectronic Laboratory, Mitsubishi Chemical Corporation, 1000 Higashi-Mamiana, Ushiku, Ibaraki 300-1295, Japan
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DenBaars Steven
Materials Department and Electrical and Computer Engineering Department, University of California, Santa Barbara, CA 93106, U.S.A.
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Tanaka Shinichi
Materials Department, University of California, Santa Barbara, CA 93106, U.S.A.
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Oh Sang
Electrical and Computer Engineering Department, University of California, Santa Barbara, CA 93106, U.S.A.
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Kawaguchi Yoshinobu
Materials Department, University of California, Santa Barbara, CA 93106, U.S.A.
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Wu Feng
Materials Department and ERATO/JST UCSB Group, University of California, Santa Barbara, CA 93106-5050, U.S.A.
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