Presentation 2007-10-11
High Efficiency Ultraviolet LEDs on Si Using InAlGaN Multi-Quantum-Wells with High Indium Contents
Yasuyuki FUKUSHIMA, Yuji TAKASE, Manabu USUDA, Kenji ORITA, Tetsuzo UEDA, Tsuyoshi TANAKA,
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Abstract(in English) Ultraviolet Light Emitting Diodes (UV-LEDs) are promising for various applications such as photocatalyst or excitation source for white LEDs. In this paper, we report on high-brightness UV-LEDs on Si substrate aiming at the low cost fabrication. InAlGaN quaternary alloy with high In content is used in the active layer in which localized excitons screen the effect of the non-radiative recombination center caused by the dislocations. The InAlGaN multi-quantum-well active layers exhibit very high internal quantum efficiency of 15% at around 350nm which is as comparable high as that on SiC for the UV-emission.
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Keyword(in English) Ultraviolet Light Emitting Diodes / Si substrate / III-V Nitride / InAlGaN quaternary alloy
Paper # ED2007-159,CPM2007-85,LQE2007-60
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Committee LQE
Conference Date 2007/10/4(1days)
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Registration To Lasers and Quantum Electronics (LQE)
Language JPN
Title (in Japanese) (See Japanese page)
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Title (in English) High Efficiency Ultraviolet LEDs on Si Using InAlGaN Multi-Quantum-Wells with High Indium Contents
Sub Title (in English)
Keyword(1) Ultraviolet Light Emitting Diodes
Keyword(2) Si substrate
Keyword(3) III-V Nitride
Keyword(4) InAlGaN quaternary alloy
1st Author's Name Yasuyuki FUKUSHIMA
1st Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.()
2nd Author's Name Yuji TAKASE
2nd Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
3rd Author's Name Manabu USUDA
3rd Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
4th Author's Name Kenji ORITA
4th Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
5th Author's Name Tetsuzo UEDA
5th Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
6th Author's Name Tsuyoshi TANAKA
6th Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
Date 2007-10-11
Paper # ED2007-159,CPM2007-85,LQE2007-60
Volume (vol) vol.107
Number (no) 253
Page pp.pp.-
#Pages 5
Date of Issue