| EPSRC Reference: |
GR/L03408/01 |
| Title: |
NEAR-FIELD OPTICAL SPECTROSCOPY OF SEMICONDUCTOR SYSTEMS |
| Principal Investigator: |
Richards, Professor D |
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| Department: |
Physics |
| Organisation: |
University of Cambridge |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 1996 |
Ends: |
30 September 1999 |
Value (£): |
111,650
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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Utilising the recently innovated technique of scanning near-field optical microscopy (SNOM), ultra-microprobe optical spectroscopy is made possible. Applied to photoluminescence, electroluminescence and Raman spectroscopies, this provides a new access to the investigation of small quantum systems and allows inhomogeneous broadening of spectral line shapes to be circumvented. Many of the attractive features of conventional optical spectroscopy are retained, such as non-evasiveness, reliability and polarisation selection rules, but the technique allows surfaces to be probed spectoscopically at a resolution (typically ~100nm) inaccessible by traditional far-field techniques. The technique will be applied to a number of semiconductor material systems and devices: microstructed III-V semiconductor systems, inorganic nanocrystals and electroluminescent polymer mixtures and in diblock copolymers). Indeed, the high spatial resolution will allow a single mesoscopic structure or nanocrystal to be accessed and enable the study of effects such as carrier diffusion and high field transport in semiconductor devices. The near field nature of the probe makes it ideal for the investigation of emission in the vicinity of photonic structures.Key Words: Materials; Polymers; Optics; Physics; Semiconductors; SPM; Spectroscopy; Microstructures; Nanocrystals.
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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 |
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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.cam.ac.uk |