Ion Implantation for Emerging Technologies: A Defects in Materials Perspective

Energetic ions, in the range of keV to MeV, produced in an ion beam accelerator cause many physical and chemical changes in the target material upon their interaction. They are usually employed for synthesis, modification, and analysis of materials to exploit various engineering and scientific applications. Semiconductor industry had been the biggest beneficiary of this technology through controllable energy of incident ions, their dose (fluence) and species; to dope the semiconductors, tune the lifetime, analyze the material, and test the radiation hardness of electronic devices. Now the salient feature precise control is expanding in modifying materials for emerging technologies.

This talk will introduce the fundamentals of ion–solid interactions and highlight how engineered defects—once considered undesirable—are now powerful tools for tailoring material functionality. Using examples from wide-bandgap semiconductors, quantum materials, oxide electronics, and radiation-tolerant systems, we will explore how implantation can controllably modify electronic structure, carrier dynamics, optical properties, and mechanical behavior of these materials. Key concepts such as defect formation mechanisms, annealing, bandgap modification and defect-driven phase transformation in certain materials will be discussed. Furthermore, the talk will briefly touch upon the accelerators-based characterization techniques to help visualize and predict implantation-induced phenomena. By connecting the well-established methods of semiconductor processing with exciting new areas of science—such as quantum electronics, and devices developed for normal to extreme environments—this talk will encourage students and researchers to look at ion implantation as a powerful and innovative tool for shaping the materials for technologies of the future.