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Bi-Induced Electron...
Bi-Induced Electron Concentration Enhancement Being Responsible for Photoluminescence Blueshift and Broadening in InAs Films
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- Chen, Xiren (författare)
- Chinese Academy of Sciences
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- Zhao Ternehäll, Huan, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wu, Xiaoyan (författare)
- Chinese Academy of Sciences,Shanghai Jiao Tong University
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- Wang, Lijuan (författare)
- Chinese Academy of Sciences
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- Zhu, Liangqing (författare)
- Chinese Academy of Sciences,East China Normal University
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- Song, Yuxin (författare)
- Chinese Academy of Sciences,Chalmers tekniska högskola,Chalmers University of Technology
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- Wang, Shu Min, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chinese Academy of Sciences
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- Shao, Jun (författare)
- Chinese Academy of Sciences
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(creator_code:org_t)
- 2019-01-07
- 2019
- Engelska.
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Ingår i: Physica Status Solidi (B): Basic Research. - : Wiley. - 1521-3951 .- 0370-1972. ; 256:5
- Relaterad länk:
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Photoluminescence (PL) study is conducted on InAs films molecular beam epitaxially grown on GaAs substrates with different Bi flux levels. A PL peak blueshift accompanied by linewidth broadening is found with the increase of Bi/As flux ratio, in contrast to the common Bi isoelectronic incorporation or surfactant effect. It is, with detailed lineshape analysis and the evidence of PL peak splitting in a magnetic filed, attributed to the electron concentration enhancement induced by Bi flux. The electron concentration in InAs film is evaluated, which is about 5-fold enhanced as Bi/As flux ratio rises up from 0 to 1x10(-3). The temperature dependence of the PL spectrum indicates that the carrier redistribution augments while the carrier-phonon Frohlich scattering weakens in InAs films with high Bi/As flux ratios. These findings reveal a novel Bi effect of electron concentration enhancement, and contribute to the basic knowledge of Bi in III-V semiconductors.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Bi
- InAs films
- As flux ratio
- photoluminescence blueshift and broadening
- electron concentration enhancement
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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