| EPSRC Reference: |
GR/K79871/01 |
| Title: |
LEVEL POPULATIONS, POPULATION INVERSION AND BALLISTIC TRANSPORT IN SEMICONDUCTORTUNNELLING STRUCTURES |
| Principal Investigator: |
Skolnick, Professor M |
| Other Investigators: |
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| Department: |
Physics and Astronomy |
| Organisation: |
University of Sheffield |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 November 1995 |
Ends: |
30 April 1999 |
Value (£): |
266,056
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Summary on Grant Application Form |
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The aim of the proposals is to obtain favourable population ratios, and where feasible population inversions, in a variety of deliberately engineered double and triple barrier resonant tunnelling structures. Such structures have strong relevance for application as unipolar infra-red emitters. A variety of spectroscopic techniques will be employed to provide precise information on the level populations achieved under device operating conditions. The principal topics are 1a) Observation of a population inversion at inter-sub-band energies below the LO phonon energy in wide well double barrier resonant tunnelling structures (DBRTS). 1b) Attainment of a population inversion in narrow well DBRTS. 1c) The use of triple barrier structures to control selectively the tunnelling rates and hence population ratios. 2) The study of inter-sub-band emission form the structures of 1a,b,c, structures using EL spectroscopy.
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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.shef.ac.uk |