Principal Investigator

Photo of Debdeep Jena
Dr. Debdeep (DJ) Jena

Group Administrative Assistant

Group Administrative Assistant, Kristin P. Kurz
Kristin P. Kurz

Kristin is originally from New Jersey and comes from a background as a professional stage manager. She holds an MFA from the University of Iowa.

426 Phillips Hall | Cornell University | Ithaca, NY 14853

Research & Visiting Professors

Kazuki Nomoto
Dr. Kazuki Nomoto

Kazuki works on advanced GaN electronics.

Dr. Vladimir Protasenko

Vlad’s primary interest is optical investigation of structures. He is interested in quantum efficiency, carrier recombination rate, heat losses, etc. in light emitting diodes, lasers, and photovoltaic cells -- this is his realm.

Postdoctoral Researchers

Photo of SM Moudud Islam
SM (Moudud) Islam

SM (Moudud) Islam
Postdoc associate
Office: 412, Phillips Hall

Moudud does III-Nitride MBE epitaxy for deep-UV photonics and power electronics.

Yongjin Cho
Yongjin Cho

Yongjin works on MBE.

Zongyang Hu

Zongyang works on GaN power electronics.

Graduate Students

Photo of Hyunjea Lea
Hyunjea Lee

Hyunjea works on 2D materials-based devices and applications.

Jashan Singhal

Jashan Singhal received the B.Tech. degree in electrical engineering and a minor in computer science from the Indian Institute of Technology (IIT), Bombay, India. While at IIT Bombay, he worked on III-V quantum dot heterostructures.

Jeffrey Miller

Jeff Miller earned his BS in electrical engineering from Penn State University, before immediately starting at Cornell in fall 2017. While at Penn State, he researched luminescent concentrators in the Applied Optoelectronics and Photonics Lab.

Jimy Encomendero

Jimy works on RTD-gated plasma-wave THz devices.

John Wright

John works on advanced nitride materials.

Photo of Jonathan McCandless
Jonathan McCandless

Jon McCandless earned his BS in electrical engineering from Case Western Reserve. Before coming to Cornell he worked at the Air Force Research Laboratory where he focused on Ga2O3.  

Joseph Casamento

Joseph earned his B.S in Materials Science Engineering at the University of Michigan, Ann Arbor in 2016. As an undergraduate, Joseph worked primarily with inorganic semiconductors for thermoelectric and spintronic applications. His current research interests include thin film growth and characterization of novel nitride and oxide materials for use in semiconductor device structures and beyond.  

Mingda (Oscar) Li

Mingda is interested in 2D materials, Tunnel Field Effect Transistors, and machine learning/deep learning. He developed a 2D device simulator ( and a device compact modeling platform using artificial neural networks (

Nicholas Tanen

Nicholas Tanen is a PhD student in the department of Materials Science and Engineering. He studies MBE growth of Ga2O3 and related ternaries as well as III-N's grown on Ga2O3 for use in power electronic and optoelectronic applications. Additionally, he studies electron transport in oxides using temperature dependent Hall measurements and scattering mechansim models.

Photo of Reet Chaudhuri
Reet Chaudhuri

Reet studies the MBE growth and characterization of III-nitrides electronic devices for high power applications, focussing on AlN platform. He did his Bachelors from NIT Tiruchhirapalli (India) and Masters (Applied Physics) from Cornell. Outside the MBE lab, he also manages the group soccer team - TeamFET.

Sam Bader

Sam develops and models advanced III-Nitride heterostructures, with a focus on p-channel devices.

Shyam Bharadwaj

Shyam currently processes III-N LED devices and studies transport in AlGaN-based n- and p- doped thin films to optimize the UV LED cladding regions. His interests include increasing EQE in UV LED structures and developing deep UV lasers. He is from New Jersey and enjoys playing soccer and video games in his free time.

Wenshen Li
Wenshen Li

Wenshen works on advanced GaN devices.

Photo of Xiang Li
Xiang Li

Xiang researches GaN HEMTS with ferroelectric gate stack.

Zexuan Zhang

Zexuan Zhang graduated from Peking University in 2017 with a Bachelor's degree in microelectronics, where he worked on silicon device reliability. His current research interest at Cornell is on non-reciprocal wave propagation devices by fermionic emulation and exceptional point physics as well as reliability of advanced materials such as Ga2O3.

Master Students

Andrew Devine

Andrew Devine, MS, earned his BS in Materials Science & Engineering from Cornell University in 2017. His current interests involve the growth and simulation of high quality distributed Bragg reflectors for deep-UV optoelectronics applications.

Anni Wu

(2017-2018 MEng, MSE)

Anni works on advanced GaN devices nanofabrication with Wenshen Li.

Connor Dempsey

Connor Dempsey, MEng, is interested in 2D materials and is currently characterizing the superconducting properties of Niobium Diselenide.

Jae Ho Shin

Jae Ho Shin, MS, MSE, works on nanotechnologies.

Photo of Jui-Yuan Hsu
Jui-Yuan (Steven) Hsu

(2017-2019 M.S., MSE)

Steven earned his B.S. in Materials Science from National Taiwan University of Science and Technology (NTUST), where he studied the effects of thin film metallic glass coatings on surgical appliances. He is currently working on advanced GaN devices to develop the metal mask for GaN etching and selective area regrowth.


Ren Zhong

Ren is interested on theoritical calculations of thin film materials. He is now focusing on the simulation of thin film Ga2O3 growth.

Photo of Vasanth Balakrishnan
Vasanth Balakrishnan

(2017-2019 M.S. MSE)

Vasanth works on growth and characterization of AlN/GaN and Ga2O3

Undergraduate Students

Malavika Attaluri
Miaoxiu Tian
Nicolas Casazzone photo
Nicolas Casazzone

Nicolas '19 is an undergraduate in Professor Jena's JXHFET group.

Xinyi Cai

Alumni Members

Aditya Sundar

Aditya Sundar, MS MSE, '17 worked on 2D materials.
Co-advised with Prof. Debdeep Jena.
He is currently a PhD student at University of Michigan.

Berardi Sensale Rodriguez

(2009 - 2013 Ph.D.) (Co-advised with Prof. Lei Liu)
"Novel Terahertz Devices Based on Tunable 2DEG Systems"

Berardi's doctoral work dealt with the proposal and development of THz devices and systems based on two-dimensional semiconductors and non-traditional electron transport phenomena.

He is currently a tenure-track Assistant Professor at the Department of Electrical and Computer Engineering of the University of Utah (Salt Lake City, UT). His research is focused on electromagnetics and nanophotonics.

Bo Song

(2011-2016, P.h.D)
"Advanced GaN devices and technology for for RF and power switching applications"

Bo worked on advanced GaN HEMTs.
Currently at ADI.

Chuanxin Lian

(2004 - 2009, Ph.D. now works at MACOM)
"Wafer-fused AlGaAs/GaAs/GaN HBTs"

Chuanxin Lian (01/10 - 06/10) jointly with Prof. Debdeep Jena.

David Deen

(2005 - 2010, Ph.D., now with Seagate)

“Advanced Design of Ultra-Thin Barrier AlN/GaN HEMTs: A Study of Device Design, Modeling and Analysis”

Feng-Ming Chang

Feng-Ming, MEng, ECE, worked on 2D materials and devices.

Guangle Zhou

(2008 - 2012, Ph.D. now with SanDisk)

Guangle worked on III-V semiconductor based Tunneling Field-Effect-Transistors (TFET).

Hank Liu

Hank Liu, MEng ECE '17, worked on power devices.
Co-advised with Prof. Debdeep Jena.
He is currently at Micron in Virginia.

Photo of group member, Henryk Turski
Henryk Turski

Henryk worked on MBE.

Huai-Hsun Burt Lien

Huai-Hsun Burt Lien, MS MSE '17, worked on 2D materials.
Co-advised with Prof. Debdeep Jena.
He is currently a PhD candidate at University of Michigan.

Jia Guo

(2008 - 2012, Ph.D. now with CREE)
"InAlN HEMTs with regrown ohmic contacts by MBE"

Jia worked on the GaN based High Electron Mobility Transistors (HEMTs) simulation, device fabrication and characterization.

Jing Zhou

(2006, MS)
"Fabrication of AlGaN/GaN HEMTs"

Liheng Jerry Zhang

Liheng, MS, MSE '17, worked on Ga2O3 devices.
Co-advised with Prof. Debdeep Jena.
He is currently a PhD candidate at Yale University.

Mingda Zhu

(January 2012 -, Cornell, Ph.D. August 2017)
Mingda worked on advanced GaN HEMTs.
Thesis: Exploring polarization doping in GaN for power applications
He is currently with Skyworks in California.

Qingling Hang

(8/08 - 07/09) jointly with Prof. Debdeep Jena

Rachel Rasmussen

(2006-2009, MS) (Co-advised with Masaru Kuno)

"Photon-assisted DEP alignment and optoelectronic properties of CdS(Se) nanowires"

Ronghua Wang

(2008 - 2013, PhD)

Ronghua worked on GaN based HEMTs fabrication and characterization, for high speed and power applications.

Rusen Yan

Rusen worked on characterization and applications (primarily optoelectronics) of 2D crystals including graphene, TMDs and others.

Rusen is currently with Crossbar.

Shudong Xiao

(April 2013 - 2015)

Shudong worked on LEAST transistors.

Subrina Rafique

(2011 - 2012, MS) (co-advised with Prof. Michelle Kelly)

Subrina worked on 2D crystal (such as graphene) growth and novel devices (THz, biosensors).

Suresh Vishwanath

(Sept. 2011 -, 2014, MS, Notre Dame; Cornell, Ph.D. August 2017)
Vishwanath worked on 2D crystal growth and applications. 
Thesis: Eptaxy of layered materials and their heterostructures
He is currently at Intel in Oregon.


Tian Fang

(2006 - 2012 ) (co-advised with Professor Debdeep Jena)

“Carrier transport in graphene and GaN high electron mobility transistors.”

Currently he is with Solar City.

Tom Zimmermann

(Postdoc then Visiting Research Assistant Professor, August 2006 - 2010)

Now with Fraunhofer Institute, Duisburg, Germany.

Vasily Kanzyuba

(January 2014 - August 2014)

Project: Graphene as heat spreader. Vasily worked on graphene CVD growth, functionalization and XPS.

Yu Cao

(2010, Ph.D. co-advised with Prof. Jena)
"Study of AlN/GaN HEMTs: MBE growth, transport properties and device issues"

Now with HRL.

Yuanzheng Yue

(Postdoc April 2011 - October 2011, now with ASU)

Yuanzheng worked on advanced GaN devices and ALD deposition of metals/dielectrics.

Yuping Zeng

(Postdoc, October - November 2011)

Currently an Assistant Professor at University of Delaware.

Yuxin Ji

Yuxin Ji, MEng ECE '17, worked on nano electronics.
Co-advised with Prof. Debdeep Jena.
He is now with Global Foundries in New York.

Zongyang Hu

(2008 - 2014, Ph.D., now Postdoc at Cornell)

“GaN HEMTs and MOSHFETs for Power Switching Applications”


Alumni Visiting Scholar

Dr. Tongbo Wei

Visited from CAS. 

Tongbo worked on DUV technologies and is now an Associate Professor at the Institute of Semiconductors, China Academy of Science.

Xiangyang Li

(2006, Visiting Scholar)

Shanghai Institute of Technical Physics, Chinese Academy of Sciences, China



Alumni Undergraduate and RET Researchers

Ava Tan

ECE '16, Cornell

Barbara Raynal

(EE 2011, University of Notre Dame)

Now with Duke University

Bihan Zhu

(Physics, EE, class 2014)

Ian Evans

(B.S. 2009, currently B.S. in Economics at ND)

Jason Kulick (B.S. 2009, currently President, Co-Founder of Indiana Integrated Circuits, LLC)

Ian Lightcap

(RET, 2005) - Clay High School, South Bend
Co-advised with D. Jena
•Project: Nanoscale imaging of semiconductors

Now with University of Notre Dame, PhD candidate in Chemistry

Jane Fleming

(B.S. expected in May 2011, Dual Degree Program at St. Mary’s College and University of Notre Dame

Now with CocaCola

John Weisenberger

(EE, class 2015)

Katrina Magno

(Physics, class 2015)

Kevin Burke

(2011) - University of Notre Dame / co-advised with Prof. M. Kelly
•Project - Chemical vapor deposition growth of bilayer graphene

Mark Prochaska

(RET, 2010) - Clay High School, South Bend, IN
•Project: ICP-Reactive ion etching of Al2O3

Phil Cook

(RET, 2011) - Culver Academy, Indiana
•Summer 2008 - Project: Semiconductor ion sensitive field-effect transistors
•Summer 2009 - Project: Graphene preparation and characterization
•Summer 2010 - Project: Comparative study on CVD and epi grapheme using scanning Kelvin probe measurements