Presentation 2002/6/8
Luminescence Characteristics of GaInN Based LEDs and High Power Devices
Satoshi WATANABE,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) GaInN based LEDs are well known to show peculiar device characteristics due to a strain induced piezoelectric field and localization of carriers. Two remarkable features are the blue shift of luminescence wavelength with increasing injected current and the behavior of the external quantum efficiency as a function of current. We have studied these device characteristics experimentally and discussed their relationship with widely proposed recombination models. Additionally, some issues to further improve LED efficiency have been discussed and current technologies for GaInN based high efficiency and high power LEDs have been shown. An optical flux as much as 100 lm from a single packaged LED lamp have been realized by using a 1mm x 1mm large junction area chip.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) GaInN quantum wells / localization effect / piezoelectric field effect / efficiency curve / high power LEDs
Paper # LQE2002-80
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Committee LQE
Conference Date 2002/6/8(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) Luminescence Characteristics of GaInN Based LEDs and High Power Devices
Sub Title (in English)
Keyword(1) GaInN quantum wells
Keyword(2) localization effect
Keyword(3) piezoelectric field effect
Keyword(4) efficiency curve
Keyword(5) high power LEDs
1st Author's Name Satoshi WATANABE
1st Author's Affiliation Agilent Laboratories, Agilent Technologies()
Date 2002/6/8
Paper # LQE2002-80
Volume (vol) vol.102
Number (no) 119
Page pp.pp.-
#Pages 4
Date of Issue