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Towards quantitativ...
Towards quantitative three-dimensional characterisation of buried InAs quantum dots
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- Kadkhodazadeh, S. (författare)
- Danmarks Tekniske Universitet,Technical University of Denmark
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- Semenova, E. S. (författare)
- Danmarks Tekniske Universitet,Technical University of Denmark
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- Schubert, M. (författare)
- Danmarks Tekniske Universitet,Technical University of Denmark
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- Thuvander, Mattias, 1968 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Stiller, Krystyna Marta, 1947 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Yvind, K. (författare)
- Danmarks Tekniske Universitet,Technical University of Denmark
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- Dunin-Borkowski, R. E. (författare)
- Danmarks Tekniske Universitet,Technical University of Denmark
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(creator_code:org_t)
- 2011-11-09
- 2011
- Engelska.
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Ingår i: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 326:1
- Relaterad länk:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- InAs quantum dots grown on InP or InGaAsP are used for optical communication applications operating in the 1.3 - 1.55 μm wavelength range. It is generally understood that the optical properties of such dots are highly dependent on their structural and chemical profiles. However, morphological and compositional measurements of quantum dots using transmission electron microscopy can be ambiguous because the recorded signal is usually a projection through the thickness of the specimen. Here, we discuss the application of scanning transmission electron microscopy tomography to the morphological and chemical characterisation of surface and buried quantum dots. We highlight some of the challenges involved and introduce a new specimen preparation method for creating needle-shaped specimens that each contain multiple dots and are suitable for both scanning transmission electron microscopy tomography and atom probe tomography.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Communication application
- New specimen
- Scanning transmission electron microscopy
- Atom probe tomography
- InAs quantum dots
- Wavelength ranges
- InP
- InGaAsP
- Recorded signals
- Chemical profiles
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)
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