Please join us for the April MIT.nano Seminar Series:
Ali Javey, PhD
Lam Research Distinguished Chair in Semiconductor Processing
Professor of Electrical Engineering and Computer Sciences, UC Berkeley
Program Leader, Electronic Materials (E-Mat), Lawrence Berkeley National Laboratory
Co-Director, Berkeley Sensor and Actuator Center (BSAC)
Date: Monday, April 24, 2023
Time: 3:00 PM - 4:00 PM ET
Location: Grier Combined (34-401)
Reception to follow.
>>Register.
To receive event announcements, sign up for our email list.
Abstract
In this talk, Prof. Ali Javey will present recent advancements on understanding and controlling the radiative and non-radiative recombination rates in various 2D semiconductor systems. Javey will discuss the mechanisms by which non-radiative recombination can be fully suppressed in TMDC monolayers, resulting in near-unity photoluminescence quantum yield at room temperature despite the presence of large defect densities. Javey will highlight an AC carrier injection mechanism to enable bright light-emitting devices using monolayers, overcoming the problem of Schottky contacts. Finally, he will share potential applications for black phosphorous (BP) thin films for midwave-IR photo detection and emission. Specifically, that BP based devices are shown to exhibit higher detectivity and luminescence efficiencies over state-of-the-art III-V and II-VI devices in mid-IR, owing to the lower Auger recombination rates and unusually low surface recombination velocity.
Biography
Ali Javey received a Ph.D. degree in chemistry from Stanford University in 2005, and was a Junior Fellow of the Harvard Society of Fellows from 2005 to 2006. He then joined the faculty of the University of California at Berkeley where he is currently a professor of Electrical Engineering and Computer Sciences. He is also a senior faculty scientist at the Lawrence Berkeley National Laboratory where he serves as the program leader of Electronic Materials (E-Mat). He is a co-director of the Berkeley Sensor and Actuator Center (BSAC).
Javey's research interests encompass the fields of chemistry, materials science, and electrical engineering. His work focuses on the integration of nanoscale electronic materials for various technological applications, including low power electronics, flexible circuits and sensors, and energy generation and harvesting. He is the recipient of Dan Maydan Prize in Nanoscience Research (2020), MRS Outstanding Young Investigator Award (2015), Nano Letters Young Investigator Lectureship (2014); UC Berkeley Electrical Engineering Outstanding Teaching Award (2012); APEC Science Prize for Innovation, Research and Education (2011); Netexplorateur of the Year Award (2011); IEEE Nanotechnology Early Career Award (2010); Alfred P. Sloan Fellow (2010); Mohr Davidow Ventures Innovators Award (2010); National Academy of Sciences Award for Initiatives in Research (2009); Technology Review TR35 (2009); NSF Early CAREER Award (2008); U.S. Frontiers of Engineering by National Academy of Engineering (2008); and Peter Verhofstadt Fellowship from the Semiconductor Research Corporation (2003).