Peter Simpson

Prof. Peter Simpson is a Professor in the Department of Physics and Astronomy at the University of Western Ontario. He leads the Positron Beam Laboratory, which uses positron annihilation spectroscopy to study defects in electronic materials. His research focuses on silicon photonics, space weathering, and defect engineering in semiconductors. Collaborations with industry and universities explore novel materials and processing techniques, including ion implantation simulations of space weathering effects and positronium formation in polymers. Students gain expertise in advanced experimental methods through projects involving nanocrystal characterization and defect analysis.

Research interests include quantum confinement in nanocrystals, vacancy dynamics, and the development of optical materials for silicon-based technologies. His work bridges fundamental physics and applied engineering, addressing challenges in semiconductor device miniaturization and optoelectronic systems. The laboratory employs cutting-edge techniques such as positron beam analysis and transmission electron microscopy to study material microstructure at atomic scales.

• Key projects: Space weathering simulations, silicon nanocrystal luminescence, and void formation in semiconductors
• Techniques: Positron annihilation, ion implantation, and advanced microscopy
• Collaborations: Interface Science Western and planetary science teams

Publications highlight advancements in defect characterization, quantum dot properties, and the interplay between vacancy structures and material performance. Graduate and undergraduate opportunities are available in experimental condensed matter physics, emphasizing hands-on training in high-tech methodologies.