| EPSRC Reference: |
GR/L07246/01 |
| Title: |
ELECTRONIC STRUCTURE AND LASER CHARACTERISTICS OF NITROGEN-BASED III-V SEMICONDUCTORS |
| Principal Investigator: |
Blood, Professor P |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
School of Physics and Astronomy |
| Organisation: |
Cardiff University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
22 August 1997 |
Ends: |
21 August 1999 |
Value (£): |
74,485
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Optoelect. Devices & Circuits |
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| EPSRC Industrial Sector Classifications: |
| Manufacturing |
Electronics |
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| Related Grants: |
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| Panel History: |
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Summary on Grant Application Form |
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This joint proposal from the Physics Departments at Durham and Cardiff combines their respective expertise in the calculation of electronic structure, and electrical and optical properties of semiconductors and in the modelling of quantum well lasers, to produce data of direct relevance to the development of nitride-based materials and devices. Virtual crystal and supercell calculations of compound and alloy band structures will provide the basis for calculations of heterojunction band offsets, dielectric properties and k.p parameters for calculations of optical gain and recombination spectra incorporating Coulomb enhancement, and spectral broadening by dephasing and well width fluctuations. We will produce data for modal gain as a function of recombination current, and will calculate carrier leakage currents, to devise optimised laser structures. Particular attention will be given to cubic and wurtzite structures and the modelling of structures compatible with available substrates. These calculations will be tested by comparison with experiment optical absorption spectra made available from related work. Close links have already been established with related materials work, which will benefit immediately from these data. The data on electronic structure and dielectric properties is of wide applicability and of particular relevance to high temperature electronics.
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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.cf.ac.uk |