Near-infrared near-field photoluminescence imaging spectroscopy of exciton localized states in GaInNAs/GaAs quantum wells due to nonuniform distribution of nitrogen

Ryosuke Kubota, Koji Nakashima, Dai Mizuno, Toshiharu Saiki, Masaru Sakai, Kazunari Matsuda, Takashi Ishizuka

研究成果: Article

抄録

The nonuniform distribution of nitrogen in dilute GaInNAs alloys was investigated by low-temperature near-field photoluminescence (PL) imaging spectroscopy of localized states driven by giant band-gap reduction due to nitrogen incorporation. The depths and spatial profiles of exciton confinement potential were visualized through the measurement of power-dependent PL spectra and high-resolution PL images. For two GaInNAs quantum wells with different nitrogen contents, we observed strongly localized excitons confined in nitrogen clusters and rather delocalized excitons, which indicate the onset of alloy formation

元の言語English
記事番号11592
ジャーナルJournal of Nanophotonics
1
発行部数1
DOI
出版物ステータスPublished - 2007

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Excitons
Semiconductor quantum wells
near fields
Photoluminescence
Nitrogen
excitons
quantum wells
Spectroscopy
Infrared radiation
photoluminescence
Imaging techniques
nitrogen
spectroscopy
Energy gap
gallium arsenide
LDS 751
high resolution
profiles
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

これを引用

Near-infrared near-field photoluminescence imaging spectroscopy of exciton localized states in GaInNAs/GaAs quantum wells due to nonuniform distribution of nitrogen. / Kubota, Ryosuke; Nakashima, Koji; Mizuno, Dai; Saiki, Toshiharu; Sakai, Masaru; Matsuda, Kazunari; Ishizuka, Takashi.

:: Journal of Nanophotonics, 巻 1, 番号 1, 11592, 2007.

研究成果: Article

Kubota, Ryosuke ; Nakashima, Koji ; Mizuno, Dai ; Saiki, Toshiharu ; Sakai, Masaru ; Matsuda, Kazunari ; Ishizuka, Takashi. / Near-infrared near-field photoluminescence imaging spectroscopy of exciton localized states in GaInNAs/GaAs quantum wells due to nonuniform distribution of nitrogen. :: Journal of Nanophotonics. 2007 ; 巻 1, 番号 1.
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AU - Kubota, Ryosuke

AU - Nakashima, Koji

AU - Mizuno, Dai

AU - Saiki, Toshiharu

AU - Sakai, Masaru

AU - Matsuda, Kazunari

AU - Ishizuka, Takashi

PY - 2007

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KW - Dilute nitride

KW - Imaging spectroscopy

KW - Localized exciton

KW - Metal-organic vapor phase epitaxy

KW - Near-field scanning optical microscope

KW - Quantum well

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