Can Bayram, Associate Professor of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, IL, USA
Will present a talk titled:
“Vertical Thinking in Light Emitting Diodes”
Abstract: Light emitting diodes (LEDs) promise energy-efficient, durable, environmental, and compact lighting for a variety of applications including general illumination and optogenetics. GaN materials (i.e. III-nitrides) are the backbone of LEDs emitting in the ultraviolet, blue, and green spectra. LED layers, grown conventionally on sapphire and silicon carbide substrates, are wurtzite in phase and possess inherit polarization fields along the common growth direction. However, recent studies showed polarization fields to contribute droop phenomena in LEDs. Thus, it is essential to focus on polarization-free designs to improve GaN photonic and vertical transport device performance. In this talk, I will report on a novel means of enabling polarization-free GaN devices via controlling material phase. In another aspect, with exciting developments in optogenetics, thin film devices capable of biomonitoring, biomanipulation, and biointegration are becoming essential. However, visible LEDs used in optogenetics are lateral-oriented, thick, and rigid – limiting their efficiency, thermal budget, and bio-integration. In this respect, I will talk about our promising results in enabling vertical-oriented, thin, and flexible LEDs. Vertical thinking is shown to be critical for enabling innovative and exciting opportunities for GaN-based LEDs.
Bio: Prof. Can Bayram is an Associate Professor in the Department of Electrical and Computer Engineering, a resident faculty at the Nick Holonyak, Jr Micro and Nanotechnology Laboratory, and an affiliate faculty of the Carle Illinois College of Medicine of University of Illinois at Urbana-Champaign, IL, USA. He is an expert in III-V materials and photonic and electronic devices. He has performed more than 3,000+ epitaxial growths with metalorganic chemical vapor deposition (MOCVD) systems and fabricated detectors, light emitting diodes, solar cells, resonant tunneling diodes, and transistors in class 100 and 1000 cleanrooms totaling 20,000+ hrs equipment usage. His current research interests lie in the intersection of novel III-V materials, hetero-structures, and photonic and electronic quantum devices. Particularly, his research group explores III-V materials and novel devices, hetero-integration of III-Vs on unconventional platforms such as graphene and silicon, heat transport across/through semiconductors, efficiency droop mechanisms and remedies in AlInGaN emitters, and ultra-fast THz photonics/electronics. Prof. Bayram’s work has been recognized widely. He is the recipient of the International Union of Pure and Applied Physics Young Scientist Prize in Optics, IEEE Nanotechnology Council Early Career Award, an NSF CAREER Award, a CS Mantech Best Paper Award, an AFOSR Young Investigator Award, the IEEE Electron Devices Society Early Career Award, and a Best Paper Award at the 11th International Conference on Infrared Optoelectronics. For his achievements in ultraviolet-to-terahertz engineering of III-V semiconductor materials and devices, OSA, SPIE, and IEEE recognized him with senior member status. Prof. Bayram supervised 3 Ph.D. Theses, 1 M.S. thesis, 5 senior theses and (co-) authored 53 journal papers (h-index ≥ 24), 39 conference proceeding papers, 2 book chapters, and has ≥ 47 patents issued/pending. For his achievements in ultraviolet-to-terahertz engineering of III-V semiconductor materials and devices, SPIE and IEEE recognized him with senior member status.
Join Zoom Meeting
https://clarkson.zoom.us/j/97158403875?pwd=SWVwVXY5clNjZ1U5UGFQTk9jTWlvZz09
Meeting ID: 971 5840 3875
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Wednesday, April 14th 2021
4pm
*Co-Sponsored by IEEE student branch and HKN
