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Temperature dependence of band gap energies of GaAsN alloys

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Title: Temperature dependence of band gap energies of GaAsN alloys
Authors: Uesugi, Katsuhiro1 Browse this author →KAKEN DB
Suemune, Ikuo Browse this author →KAKEN DB
Hasegawa, Tatsuo Browse this author
Akutagawa, Tomoyuki Browse this author →KAKEN DB
Nakamura, Takayoshi Browse this author →KAKEN DB
Authors(alt): 植杉, 克弘1
Issue Date: 6-Mar-2000
Publisher: American Institute of Physics
Journal Title: Applied Physics Letters
Volume: 76
Issue: 10
Start Page: 1285
End Page: 1287
Publisher DOI: 10.1063/1.126010
Abstract: The temperature dependence of band gap energies of GaAsN alloys was studied with absorption measurements. As the N concentration in GaAsN increased, the temperature dependence of the band gap energy was clearly reduced in comparison with that of GaAs. The redshift of the absorption edge in GaAsN for the temperature increase from 25 to 297 K was reduced to 60% of that of GaAs for the N concentration larger than ~1%. The differential temperature coefficient of the energy gap at room temperature was also reduced to 70% of that of GaAs. The main factor for this reduced temperature dependence in GaAsN was attributed to the transition from band-like states to nitrogen-related localized states with detailed studies of the temperature-induced shift of the absorption edge.
Rights: Copyright © 2000 American Institute of Physics
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 植杉 克弘

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