E. Fred Schubert

Professor and Constellation Chair, Future Chips


Department of Electrical, Computer & Systems Engineering, Rensselaer Polytechnic Institute


Ph.D., University of Stuttgart, Germany
M.S., University of Stuttgart, Germany, Electrical Engineering
B.S., University of Stuttgart, Germany, Electrical Engineering


After completing his master's degree, Dr. Schubert spent four years studying compound semiconductor crystal growth as a scientific staff member at the Max Planck Institute for Solid State Research. He later joined AT&T Bell Laboratories in Holmdel, N.J., where he spent two years as a postdoctoral fellow. From 1988 to 1995, Schubert served as principal investigator in the Research Division of AT&T Bell Laboratories in Murray Hill, N.J. In 1995, he joined Boston University and was appointed to a full professorship in the Department of Electrical and Computer Engineering. He also was named an affiliated member of the Photonics Center. At BU, he was responsible for GaN materials characterization and the fabrication of compound semiconductor devices particularly GaN-based devices. He continued to serve as an adjunct professor for Boston University from 2002 to 2003.

In 2002, Schubert was appointed Senior Constellation Chair of the Future Chip Constellation and Professor in the Department of Electrical, Computer, and Systems Engineering at Rensselaer and also the Director of the NSF funded Smart Lighting Engineering Research Center (2008). He has made pioneering contributions to the field of compound semiconductors in particular to alloy broadening, delta-doping, resonant-cavity light emitting diodes, enhanced spontaneous emission in Er-doped Si/SiO2 microcavities, photonic crystal light-emitting diodes, elimination of heterojunction band discontinuities, p-type superlattice doping in AlGaN, crystallographic etching of GaN, polarization-enhanced ohmic contacts, omni-directional reflectors for LEDs, and perfect anti-reflection coatings. He is co-inventor of 28 US patents and coauthored more than 250 publications. He authored the books Doping in III–V Semiconductors (1992), Delta Doping of Semiconductors (1996), and Light-Emitting Diodes (1st edition 2003 and 2nd edition 2006). He is a Fellow of the APS, IEEE, OSA, and SPIE and has received several awards.

Research Interests

  • Integrated Electronics
  • Electronic Materials
  • Semiconductors

Dr. Schubert's primary research interest is in the field of compound semiconductor materials and devices. His studies include epitaxial growth, materials characterization, device processing and fabrication, device design, and device characterization. Devices include heterobipolar transistors, light-emitting diodes, and lasers for communication, lighting, and sensing applications.

Dr. Schubert has made pioneering contributions in compound semiconductor materials and devices. His accomplishments include the discovery and first analysis of alloy broadening, the development of delta doped structures, superlattice doping in p-type GaN and AlGaN for increased acceptor activation, and compositional parabolic grading for elimination of band discontinuities in unipolar heterojunctions. He demonstrated the first resonant-cavity light-emitting diode (RCLED), which is the first practical device taking advantage of spontaneous emission enhancement; he also showed the first spontaneous emission and absorption enhancement in Er-doped Si/SiO2 microcavities. His recent accomplishments include polarization-enhanced ohmic contacts in III-V nitride materials, the explanation of the high diode ideality factors (> 2.0) found in III-V nitride p-n junction diodes, and the demonstration of high-reflectivity omni-directional.


  • Fellow, American Physical Society
  • Fellow, Institute of Electrical and Electronics Engineers
  • Fellow, Institute of Electrical and Electronics Engineers (IEEE)
  • Fellow, American Physical Society (APS)
  • Fellow, Optical Society of America (OSA)
  • Fellow, International Society for Optical Engineering (SPIE)
  • Senior Research Award, Humboldt Foundation
  • Discover Award for Technological Innovation, Discover Magazine
  • R&D 100 Award, Research & Development Magazine
  • Provost Innovation Fund Award, Boston University


E. Fred Schubert

Low Center for Industrial Innovation, Room 7111
Rensselaer Polytechnic Institute
110 8th Street
Troy, New York 12180

Office: (518) 276-8775