| EPSRC Reference: |
GR/K41717/01 |
| Title: |
TRANSIENT VERTICAL TRANSPORT IN LOW DIMENSIONAL STRUCTURES |
| Principal Investigator: |
Vickers, Professor A |
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| Department: |
Physics |
| Organisation: |
University of Essex |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 September 1994 |
Ends: |
30 November 1996 |
Value (£): |
17,824
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Summary on Grant Application Form |
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In this work we wish to build on our developmental work on electro-optic sampling of transient photoconductivity in in-plane MQW structures (GR/E91448) to address the following questions:1. Is the transient photoconductivity in vertical systems dominated by capture into the wells, recombination of impurity/defect trapping?2. At what electric field strengths does the photoconductivity in vertical systems become dominated by sweep out of the carriers rather than by the routes discussed in 1?3. It is possible to directly measure trapping into and generation out of quantum wells>In order to address these questions we have devised a comprehensive experimental and theoretical programme which will build on the steady state studies being carried out under grant GR/G02680. The work will involve comparing transient reflectivity measurements with transient photoconductivity measurements and comparing both of these experimental results with Monte Carlo simulations. From past experience in picosecond transient photoconductivity work we have found that Monte Carlo methods are essential to understanding the temporal behaviour of the current on very short time scales mainly as on e is dealing with the possibility of the carrier population, the mobility and the electric field all being variables.
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Key Findings |
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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 |
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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.sx.ac.uk |