| EPSRC Reference: |
GR/R23367/01 |
| Title: |
Atomic Hydrogen Assisted Growth of Iii - V Semiconductor Thin Film Structures |
| Principal Investigator: |
Jones, Professor TS |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Chemistry |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 2001 |
Ends: |
30 June 2004 |
Value (£): |
208,783
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Materials Synthesis & Growth |
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| EPSRC Industrial Sector Classifications: |
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Summary on Grant Application Form |
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This proposal will investigate the role of in-situ atomic H in influencing the homoepitaxial and heteroepitaxial growth of arsenide and phosphide based semiconductor thin film structures grown by molecular beam epitaxy (MBE). Scanning tunnelling microscopy (STM) and reflection high energy electron diffraction (RHEED) will initially be used to study the atomistic mechanisms involved in low temperature substrate preparation (GaAs, InAs, InP) using atomic H. Epitaxial growth in the presence of atomic H will then be studied and we will investigate the mechanisms and atomic scale morphology of hoinoepitaxial growth of GaAs and InAs on different substrate orientations and vicinal surfaces. The role of atomic H in influencing strained layer heteroepitaxial growth (InAs/GaAs, InAs/lnP) will then be studied, concentrating specifically on reducing dislocation formation and density on (110) and (111) A substrates, and controlling self-assembled quantum dot formation and size distribution on (001) substrates. Finally, we will investigate the initial stages of GaAs overgrowth of InAs/GaAs quantum dot structures in the presence of atomic H, focusing in particular on improving surface morphology and the optical properties of the structures.
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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.imperial.ac.uk |