| EPSRC Reference: |
GR/M29719/01 |
| Title: |
CORRELATION OF LOCAL ELECTRONIC STRUCTURE AND MICROSTRUCTURE IN FUNCTIONAL MATERIALS |
| Principal Investigator: |
Bangert, Professor U |
| Other Investigators: |
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| Department: |
Physics |
| Organisation: |
UMIST |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 April 1999 |
Ends: |
31 March 2002 |
Value (£): |
144,300
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Solar Technology |
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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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Microstructural information in advanced technological materials of considerable complexity and inhomogeneity, ie in III-V and II-VI semiconductors, superconducting oxides and oxide catalysts, will be related to the electronic structure, eg to the local bandgap and joint density of states (JDOS). This will enable one to relate defect sites to (i) optical properties of GaN light emitting sources, (ii) the efficiency of CdTe solar cells, (iii) the metal to non metal transition in Ba-bismuthates, and (iv) the catalytic activity and selectivity in oxide catalysts. The studies on the above materials systems will be carried out by electron energy loss spectroscopy in the interband scattering regime (ie between 1 and 4 eV) with nm spatial resolution in dedicated FEG STEM, with a particularly narrow emission function. The studies will be complemented by ELNES and EXAFS measurements, where possible. Existing software to extract to JDOS will be improved and the underlying models revised. The proposed research programme will tie in with existing programmes, from which materials will be drawn and whose results, obtained by a consortium of other techniques, eg reflection ELS and PL, XANES, XAFS, STM/AFM I-V profiles, will complement those obtained on the proposed programme.
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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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