| EPSRC Reference: |
GR/M18027/01 |
| Title: |
SIZE AND COMPOSITION OF SEMICONDUCTOR NANOSTRUCTURES USING SCANNING TRANSMISSION ELECTRON MICROSCOPY |
| Principal Investigator: |
Goodhew, Professor PJ |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Materials Science & Eng |
| Organisation: |
University of Liverpool |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 September 1998 |
Ends: |
31 August 2000 |
Value (£): |
86,865
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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We propose to investigate the size, composition and shape of InAs/GaAs self-assembled quantum dots (QDs) using STEM. Energy dispersive X-ray analysis will be used as a chemical probe to determine the size of these small structures. Since the electron probe is very small (<1nm) the size (and consequently the shape) of the dots can be determined with reasonable accuracy. Special samples incorporating InGaAs quantum wells will be used to provide an integral calibration for an estimate of the composition of the dots, taking full account of the dot geometry. Provided that the wells are grown close to the dots this will avoid problems associated with variations in foil thickness. Having established a method for the InAs/GaAs material system this will be extended to other semiconductor QD combinations such as InAs/InP and InP/InGaP.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.liv.ac.uk |