| EPSRC Reference: |
GR/K24277/01 |
| Title: |
EMISSION PROCESSES IN SI/SIGE QUANTUM DOTS. |
| Principal Investigator: |
Sotomayor Torres, Professor C |
| Other Investigators: |
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| Department: |
Electronics and Electrical Engineering |
| Organisation: |
University of Glasgow |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 1994 |
Ends: |
30 June 1995 |
Value (£): |
42,953
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Summary on Grant Application Form |
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It is proposed to study the main emission mechanisms in Si-SiGe quantum dots based upon recent observations of strong emission with narrow linewidth which survives up to about 100 Kelvin. The main work is to determine, understand and control the emission mechanisms in quantum dots (down to 30-40 nm) fabricated by electron-beam lithography and dry etching. Thorough structural and optical characterisation of the starting and patterned material will be carried out. Special attention will be paid to the fabrication steps to minimise possible damage. The relevance of the sharp emission in quantum dots to Si-based optoelectronics is obvious. We will aim to maximise the use of this emission keeping the sharpness and brightness to room temperature. If the emission is mainly intrinsic there are exciting possibilities of investigating the indirect to direct band-gap conversion. If the emission is extrinsic (eg the G-line in Si) there are challenging prospects involving a combination of lateral confinement, carrier localisation, surface phenomena, strain relief and deep impurities in dots, areas hardly explored in 1 and O-D Si-SiGe. Technology processes towards the fabrication of an electroluminescence-based device will be undertaken.
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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.gla.ac.uk |