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Ab-inito study of properties of defects in ultra ... (No replies)
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A fully funded Ph.D. studentship is available in the Department of Physics & Astronomy at the Howard University, Washington D.C., U.S.A. The position is open till filled.
Brief Project Description: This project will investigate the viability of ultra-wide bandgap (UWBG) semiconductors for extreme applications such as high-voltage power electronics, and radiation detection. To realize the full potential of such semiconductors, it is desirable to have both n-type and p-type polarity conduction. However, in most UWBG materials either one, or both polarities of dopant levels are too deep to be practical in real power electronics, which require high current levels. Cubic boron nitride (c-BN) is an outlier among other UWBG in that both shallow n-type (Silicon doping), and p-type (Beryllium doping) are possible. This work will investigate doping and compensation strategies to evaluate the usefulness of c-BN in extreme applications, as well as determine the basic physical/electronic properties of c-BN in the presence of different defects. This is a collaboration between theorists and experimentalists at the Howard University, Morgan State University and the University of South Carolina. The focus of our group at the Howard University is on the use of first principles techniques to investigate the physics and dynamics of defects in c-BN under different thermodynamic conditions.
This project will provide opportunities to work closely with experimentalists, preparing the student for careers in academia and industry.
Qualifications:The candidate should have (or be close to obtaining) a Master’s degree in Physics and be in good academic standing. Good computational skills and research experience in calculating electronic structure properties are very desirable. The candidate is expected to have a good understanding of solid state physics and quantum mechanics. A strong desire to explore new physics and to learn new techniques, as well as good communication skills are necessary for success in this project.
There are no restrictions on the nationality of the student. Further enquiries can be directed to Dr. Pratibha Dev (email: [email protected]), accompanied with a CV and a cover letter.