Principal Investigator

profile

Prof. J. Lucy Shi

Associate Professor

PhD,  Cornell University, 2010

 

 

Office: SEO 1032 

Email: lucyshi@uic.edu

Work: 312.355.5557

Graduate Students

profile

Xiaowei Wang

PhD Student

Xiaowei’s research involves fabricating devices such as GaN-based Metal-Insulator-Semiconductor Heterojunction Field Effect Transistors (MISHFETs) to explore and optimize a few aspects of the fabrication process and improve the performance. Au-free, low RTA temperature Ohmic contacts on AlGaN/GaN heterojunction and enhancement-mode AlGaN/GaN MISHFETs are currently being investigated. Her fabrication process mainly involves physical and chemical vapor deposition, optical and electron-beam lithography, dry and wet etching and atomic layer deposition, etc. Also, Xiaowei studied small-molecule adsorption and dissociation on the edges of MoS2 nano-ribbons and investigated the tunability of electronic, optical, mechanical properties of the MoS2 nano-ribbons with strain engineering.

Before she joined our group, Xiaowei got her M.S. and B.S. in Microelectronics from Xi’an Jiaotong University.

Email: xwang272@uic.edu

Profile

Yu Wen

PhD Student

Yu works on optoelectronic devices based on heterojunctions of 2D materials on GaN or silicon. It involves the growth of 2D materials (graphene, h-BN, MoS2 and WS2) with CVD and the fabrication of devices. He works on the structural and optical characterizations of the 2D nanomaterials. Besides, he works on the photovoltaic and quantum efficiency measurements and analysis of solar cells.

Email: ywen20@uic.edu

profile

John Tiessen

PhD Student

John’s research interests are centered around the design and modeling of electronic devices which exploit the quantum mechanical properties of materials. Of particular interest is the field of 2D semiconductors which include Transition Metal Dichalcogenides (TMDCs) which are intrinsic semiconductors with non-zero Berry curvature. These materials and others like them can serve as the basis for 2D heterostructures which in turn can be used to design novel electronic devices. These devices can have a variety of applications ranging from photodetectors to quantum computing. Another class of materials of interest to me are 2D magnetic materials such as CrI3. These semiconductor materials exhibit useful properties such as spin dependent barrier heights. One of the goals of John’s research is to study the interactions of these 2D materials within heterostructures. Some of the tools to model the carrier transport are Density Functional Theory (DFT) and Bardeen tunneling theory. By accurately modeling these materials and their electronic transport properties we will be able to not only better analyze experimental results but also explore novel heterostructures and their possible applications

Email: tiessen2@uic.edu

profile

Chia-Heng Sun

PhD Student

Chia-Heng’s research focuses on exploring the mechanisms of Schottky barrier formation in 2D semiconductor-metal interfaces. By using DFT analyzing the interface states and interface dipoles, we can better understand the nature of Fermi-level pinning in TMDC (such as MoS2)-metal contacts and further improve the contact performance.

Email: csun42@uic.edu

profile

Leila Rahimifard

PhD Student

Leila is a Ph.D. student in the Electrical Engineering Department at the University of Illinois, Chicago. Her research interests include Semiconductor Devices, Nanotechnology and Nano-Electronics, and Photonics. She received her Bachelor’s degree in electrical engineering from the University of Tehran and her Master’s degree in electrical engineering from the University of Amirkabir, Tehran, Iran.

Email: lrahim2@uic.edu

profile

Toan Phan

PhD Student

Toan’s research is concentrated on investigating the design and fabrication process of GaN-based metal-insulator-semiconductor heterojunction field effect transistors (MISHFETs) to optimize performance under high-frequency operations. His fabrication process includes physical and chemical vapor deposition, optical and electron-beam lithography, dry and wet etching, and atomic layer deposition. Some other systems of interest include Au-free, low RTA temperature ohmic contacts on AlGaN/Gan heterojunctions and enhancement-mode AlGaN/GaN MISHFETs.

Email: tphan22@uic.edu

 

Profile

Rockwell Dax

PhD Student

Rockwell’s research is primarily based on exploring the theory, characteristics, and applications of 2D semiconductor materials. Specifically, his work focuses on developing Transition Metal Dichalcogenides (TMDCs) and other 2D materials into viable semiconductor alternatives to the existing photon-based or trapped-ion physical implementations of qubits within the realm of quantum computing. Additionally, he aims to improve device performance and physical viability in existing applications through experimental and theoretical study.

Email: rdax2@uic.edu

Alumni from our group

profile

Chenjie Tang, PhD, 2017, now with Qualcomm

profile

Albert Colon, PhD, 2017, now with Sandia National Laboratories

profile

Parijat Sengupta, PhD

Postdoctoral Researcher, now with Intel

profile

Giftsondass Irudayadass, MS, 2018

profile

Miaozhen Mei, MS, 2020