
Dr Geoffrey Dunn
Senior Lecturer
- About
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Biography
Head of physics. After his first degree in astrophysics, he obtained a PhD in Positron physics at London University in 1990. Since then he has developed an extensive suite of semiconductor device Monte Carlo simulation software and has researched into photodetectors, impact ionisation and Gunn oscillators working at Helsinki, Norwich, Sheffield and Loughborough Universities. Currently he is working to develop a planar Gunn diode technology for the generation of T-Rays (THz frequency radiation) and investigate novel cooling methods for semiconductor devices.
- Publications
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Page 2 of 5 Results 11 to 20 of 48
Thermal Profiles Within the Channel of Planar Gunn Diodes Using Micro-Particle Sensors
IEEE Electron Device Letters, vol. 38, no. 9, pp. 1325-1327Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1109/LED.2017.2731961
Potential Well Barrier Diodes for Submillimeter Wave and High Frequency Applications
IEEE Electron Device Letters, vol. 38, no. 4, pp. 438-440Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1109/LED.2017.2673662
Micro-coolers fabricated as a component in an integrated circuit
Semiconductor Science and Technology, vol. 30, no. 1, 015005Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1088/0268-1242/30/1/015005
- [ONLINE] View publication in Scopus
Experimentally estimated dead space for GaAs and InP based planar Gunn diodes
Semiconductor Science and Technology, vol. 30, no. 1, 114502Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1088/0268-1242/30/1/012001
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/7436/1/SST_30_1_012001.pdf
On wafer thermal characterization of miniature gallium arsenide microcoolers with thermal loading from DC probes
Microwave and Optical Technology Letters, vol. 56, no. 11, pp. 2699-2700Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1002/mop.28681
Terahertz oscillations in an In0.53Ga0.47As submicron planar Gunn diode
Journal of Applied Physics, vol. 115, no. 11, 114502Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1063/1.4868705
Micro-cooler Enhancements by Barrier Interface Analysis
AIP Advances, vol. 4, no. 2, 027105Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1063/1.4865251
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/3363/1/Stephen_AIP_Advances.pdf
Improvements in thermionic cooling through engineering of the heterostructure interface using Monte Carlo simulations
Journal of Applied Physics, vol. 114, no. 4, 043717Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1063/1.4817087
Impact ionisation electroluminescence in planar GaAs-based heterostructure Gunn diodes: Spatial distribution and impact of doping non-uniformities
Journal of Physics D: Applied Physics, vol. 113, no. 12, 124505Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1063/1.4798270
- [ONLINE] View publication in Scopus
A 218-GHz second-harmonic multiquantum well GaAs-based planar Gunn diodes
Microwave and Optical Technology Letters, vol. 55, no. 3, pp. 686-688Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1002/mop.27393