Current address: T. J. Watson Research Center, IBM, Yorktown Heights, NY, U.S.A.
Crystallographic Studies of AlGaInN-based Superlattices for Terahertz Emitters
Studied at Northwestern University, Evanston, IL, U.S.A.
"During my graduate and postgraduate studies, I have been involved with III-V semiconductors. I have used chemistry, physics, material science, and engineering disciplines interchangeably throughout my career. Such a multidisciplinary approach enabled my academic and industrial success. I am planning to continue along the same way: engineer novel semiconductor devices and bring new and improved functionality to electronic and photonic technologies through materials, physics, and engineering skills. My goal is to improve the health and well-being of the community through innovation of energy-efficient and inexpensive semiconductor devices based on abundant materials. The setting I will carry out these goals is within a research-oriented atmosphere as in IBM Research now or within an academic setting as a professor."
Growing world population and increasing energy demands call for energy savings in every aspect of our lives. With about 20% of annual energy being consumed for lighting (a $120 billion industry with general lighting covering about 75% of it), environmental-friendly alternatives to existing lighting technologies are under investigation for energy savings. Solid-state lighting-based on light emitting diodes (LEDs) is the most promising candidate capable of fulfilling the lighting demand without trade-off in lighting quality.
Emerging LED lighting is based on gallium nitride (GaN) technology and has the potential to reduce energy consumption by nearly one half while enabling significant carbon emission reduction. However, benefiting the most from light-emitting diodes requires a wide-scale adoption. This necessitates reducing a single LED device cost currently dominated by the substrate (i.e. sapphire) and the epitaxy (i.e. GaN).
I am particularly interested in integrating Graphene, Si and ZnO into GaN-based light emitting diodes. Graphene (a form of Carbon (C)), Silicon (Si), and zinc oxide (ZnO), being the most scalable and earth-abundant materials, can be great substitutes in current LEDs for the costly substrate and epitaxy. Engineering such hybrid devices may reduce the cost significantly but comes with additional hurdles necessitating new technological breakthroughs. I focus on engineering light-emitting diodes with such inexpensive materials and look into novel concepts such as thin film LEDs targeted for solid-state lighting and advanced bio-flex-applications.
- (2012) Best Paper Award at Infrared Optoelectronics Materials and Devices Conference, (MIOMD-XI) (co-chaired by Nobel Laureates Prof. Leo Esaki, and Klaus von Klitzing)
- (2010) IBM Ph.D. Fellowship
(awarded annually to select researchers in the world by International Business Machines Corporation)
- (2010) Link Foundation Energy Fellowship
(awarded annually to three in USA and Canada by Link Foundation)
- (2010) IEEE Electron Devices Society PhD Fellowship
(awarded to three in the world - one in USA - by IEEE Electron Devices Society)
- (2009) Boeing Engineering Student of the Year
(awarded annually to one in the world by Boeing Company)
- (2009) IEEE Photonics Society Graduate Student Fellowship
(awarded to twelve in the world - seven in USA - by IEEE Photonics Society)
- (2009) SPIE Laser Technology, Engineering and Applications Scholarship
(awarded to one in the world - third top recognition - by SPIE Society)
- (2009) Ludo Frevel Crystallography Scholarship
(awarded to ten in the world by ICDD)
- (2008) Dow Sustainability Innovation Award
(awarded to one in select worldwide universities by Dow Chemical Company)
"I would like to thank the donors for an extremely valuable scholarship opportunity available for material science enthusiastic graduate students such as I once was. The available funds that came along with becoming a Ludo Frevel Scholar brought additional exposure to my work through enabling an additional conference attendance. With the remaining funds, I diversified my research area through exposure to different scientific societies, reading materials, and simulation tools. I am proud to be a member of the elite Ludo Frevel Scholar Alumni and am thankful for this unique honor and timely financial assistance that helped shape my early career."