Speaker: Dr. Debdeep Jena, Cornell University

Speaker:  Dr. Debdeep Jena, Cornell University

Title:  Polarization-induced doping in ultra-wide bandgap semiconductor quantum structures

Abstract:

Abstract: In this talk, I will share our recent finding of high-density 2-dimensional hole gases in undoped nitride semiconductor quantum heterostructures.  This finding has led to the realization of the highest performance p-channel transistors in nitride semiconductors.  The combination of polarization-induced complementary n- and p-type doping and combination of Aluminum Nitride with epitaxial nitride metals and superconductors is leading to an exciting and unique material platform to enable applications ranging from high-speed RF communications, power electronics, and surprisingly, also quantum communications and computation.  I will discuss some of these applications if time permits.

Biography: Debdeep Jena [website] is the David E. Burr Professor at Cornell University. His teaching and research are in the quantum physics of semiconductors and electronic and photonic devices based on quantized semiconductor structures (e.g. Nitrides, Oxides, 2D Materials), and their heterostructures with superconductors, ferroelectrics and magnets, with device applications in energy-efficient transistors, light-emitting diodes and RF and power electronics and quantum computation and communications.  His research is driven by the goal to enable orders of magnitude increase in the energy efficiency and speed for computation, memory, communications, lighting, and electrical energy management ranging from the chip to the grid. The research from his group has been published in more than 300 journal papers including in Science, Nature, Physical Review Letters, Applied Physics Letters and Electron Device Letters. Several patents have been granted for the group’s research work.  He is a fellow of the American Physical Society and is the winner of teaching awards and research awards such as the ISCS young scientist award in 2012, MBE young scientist award in 2014, and awards from the industry such as the IBM faculty award in 2012, and most recently the Intel outstanding research award in 2021.