| EPSRC Reference: |
EP/C512014/1 |
| Title: |
Optically Detected X-Ray Absorption In Semiconductors: Development Of A Model System AT MAXlab, Sweden |
| Principal Investigator: |
Poolton, Dr N |
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| Department: |
Photon Science |
| Organisation: |
STFC Laboratories (Grouped) |
| Scheme: |
Overseas Travel Grants Pre-FEC |
| Starts: |
07 May 2005 |
Ends: |
06 August 2005 |
Value (£): |
3,423
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| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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In understanding and developing new optoelectronic quantum systems, knowledge about the intimate link between the structure of materials and their photon emission properties is a basic pre-requisite, yet very few methods are available for making this direct connection. Whilst sample structures can be probed by a wide variety of methods (including synchrotron-based EXAFS/NEXAFS) and emission can be monitored using many types of luminescence-based measurements, linking these individual results is not trivial and prone to errors in interpretation.One method that has the ability to make a direct link between sample structure and emission is Optically Detected XAS (OD-XAS). The phenomenological model often used to explain why OD-XAS works, is that energy transfer processes that give rise to luminescence in a sample change as the energy of the exciting photons is scanned across the x-ray absorption edges of atomic species of interest. In this way, particular x-ray absorption structures can be directly attributable to specific luminescence features. However, there are many complexities in the behaviour of OD-XAS, and an underlying theory, based upon the analysis of model systems is becoming increasing necessary. The purpose of this research is to undertake exactly this research, on model meso-structured semiconductor systems at the MAXIab synchrotron, Sweden.
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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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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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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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