Presentation 2008-11-27
Emission color tunable light-emitting diodes based on multi-facetted InGaN/GaN quantum wells
Mitsuru FUNATO, Keita HAYASHI, Masaya UEDA, Yoichi KAWAKAMI, Yukio NARUKAWA, Takashi MUKAI,
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Abstract(in English) We demonstrate that the apparent emission colors of InGaN-based LEDs using micro-structured multifacet quantum wells as active layers can externally be controlled over a wide spectral range that encompasses green to blue or white at a color temperature of 4000K to blue along the Planckian locus. The controllability relies on facet-dependent polychromatic emissions. The pulsed current operation with the appropriate duties varied their relative intensities and the consequent apparent colors without seriously affecting the total number of emitted photons, particularly for the blue to green variation. The proposed LEDs can be fabricated through a simple process and, therefore, may be a key device for advanced SSL.
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Keyword(in English) InGaN/GaN quantum wells / multi-facetted structures / LEDs / color-tunable LEDs
Paper # ED2008-164,CPM2008-113,LQE2008-108
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Conference Information
Committee LQE
Conference Date 2008/11/20(1days)
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Registration To Lasers and Quantum Electronics (LQE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Emission color tunable light-emitting diodes based on multi-facetted InGaN/GaN quantum wells
Sub Title (in English)
Keyword(1) InGaN/GaN quantum wells
Keyword(2) multi-facetted structures
Keyword(3) LEDs
Keyword(4) color-tunable LEDs
1st Author's Name Mitsuru FUNATO
1st Author's Affiliation Department of Electronic Science and Engineering, Kyoto University()
2nd Author's Name Keita HAYASHI
2nd Author's Affiliation Department of Electronic Science and Engineering, Kyoto University
3rd Author's Name Masaya UEDA
3rd Author's Affiliation Department of Electronic Science and Engineering, Kyoto University
4th Author's Name Yoichi KAWAKAMI
4th Author's Affiliation Department of Electronic Science and Engineering, Kyoto University
5th Author's Name Yukio NARUKAWA
5th Author's Affiliation Nichia Corporation, Nitride Semiconductor Research Lab.
6th Author's Name Takashi MUKAI
6th Author's Affiliation Nichia Corporation, Nitride Semiconductor Research Lab.
Date 2008-11-27
Paper # ED2008-164,CPM2008-113,LQE2008-108
Volume (vol) vol.108
Number (no) 323
Page pp.pp.-
#Pages 4
Date of Issue