Presentation 1999/10/22
Intersuband transition in AlGaN/GaN multiple quantum wells
Norio Iizuka, Kei Kaneko, Nobuo Suzuki,
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Abstract(in English) There is large lattice strain in AlGaN/GaN multiple quantum wells (MQWs). We investigate how the strain affects the crystalline quality, interband luminescence properties and intersubband transition (ISBT). The lattice strain produces the internal field, of which magnitude is determined by the ratio of the well and the barrier. Due to the field, ISBT wavelength does not correspond to the interband luminescence wavelength. When the barriers are thick, the strain energy increases and the lattice is partly relaxed. By setting the barrires thinner, we grew MQWs which consist of as many as 200 wells and barriers with Al content of 0.65 and we grew MQWs with Al content of as high as 0.85. We successfully observed the intersubband absorptions for both samples.
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Keyword(in English) intersubband transition / nitride semiconductor / piezoelectric effect / optical switch / ATR / Brewster angle
Paper # CPM99-115
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Committee CPM
Conference Date 1999/10/22(1days)
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Registration To Component Parts and Materials (CPM)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Intersuband transition in AlGaN/GaN multiple quantum wells
Sub Title (in English)
Keyword(1) intersubband transition
Keyword(2) nitride semiconductor
Keyword(3) piezoelectric effect
Keyword(4) optical switch
Keyword(5) ATR
Keyword(6) Brewster angle
1st Author's Name Norio Iizuka
1st Author's Affiliation Corporate Research and Development Center, Toshiba()
2nd Author's Name Kei Kaneko
2nd Author's Affiliation Corporate Research and Development Center, Toshiba
3rd Author's Name Nobuo Suzuki
3rd Author's Affiliation Corporate Research and Development Center, Toshiba
Date 1999/10/22
Paper # CPM99-115
Volume (vol) vol.99
Number (no) 379
Page pp.pp.-
#Pages 6
Date of Issue