@article{fc71307dd96b448fbffb30a0e1e05266,
title = "Near-infrared near-field photoluminescence imaging spectroscopy of exciton localized states in GaInNAs/GaAs quantum wells due to nonuniform distribution of nitrogen",
abstract = "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",
keywords = "Dilute nitride, Imaging spectroscopy, Localized exciton, Metal-organic vapor phase epitaxy, Near-field scanning optical microscope, Quantum well",
author = "Ryosuke Kubota and Koji Nakashima and Dai Mizuno and Toshiharu Saiki and Masaru Sakai and Kazunari Matsuda and Takashi Ishizuka",
note = "Funding Information: This work is supported in part by a Grant in Aid for the Global Center of Excellence for High-Level Global Cooperation for Leading-Edge Platform on Access Spaces from the Ministry of Education, Culture, Sport, Science, and Technology in Japan.",
year = "2007",
doi = "10.1117/1.2816112",
language = "English",
volume = "1",
journal = "Journal of Nanophotonics",
issn = "1934-2608",
publisher = "SPIE",
number = "1",
}