| EPSRC Reference: |
GR/N13111/01 |
| Title: |
POWERFUL MID-IR INAS LEDS AND EFFICIENT DETECTORS FOR GAS SENSING GROWN BY LPE USING MELT PURIFICATION |
| Principal Investigator: |
Krier, Professor A |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Physics |
| Organisation: |
Lancaster University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
29 August 2000 |
Ends: |
28 November 2003 |
Value (£): |
215,698
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Optoelect. Devices & Circuits |
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Summary on Grant Application Form |
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The use of InAs based LEDs and photodiodes in infrared gas sensor instrumentation is currently limited by their poor quantum efficiency.We propose to fabricate a) powerful (>5mW) LEDs and b) efficient photodiodes using Gd gettering of the LPE growth melt. Our preliminary results are encouraging and by a systematic investigation of the influence of Gd concentration on photoluminescence and residual carrier concentration, we expect to realise substantial improvements. The relative importance of Auger and SRH recombination rates in LEDs will be studied using pump-probe (St Andrews) and high pressure studies (Surrey).The resulting devices will be evaluated in a commercial hydrocarbon gas sensor at the end of the project by the industrial collaborator (Kidde).
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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.lancs.ac.uk |