Professor Jim Greer

Study of materials in the regime where quantum mechanical effects begin to dominate electronic device behaviour; Design of emerging electron devices; Treatment of electron-electron correlation; Determining current-voltage characteristics on the nanoscale; Surface effects in nanowires and other low-dimensional systems; Semimetals for electronics; Atomic scale models for nanowire transistors and interconnects

Recent Publications

Crystallization-induced Realignment of Carbon Fiber in Phase Change Material to Achieve Exceptional Thermal Transportation Properties, Maohua Li, Linhong Li, Yue Qin, Xianzhe Wei, Xiangdong Kong, Zhenbang Zhang, Shaoyang Xiong, Hainam Do, James C. Greer, Tao Cai, Wen Dai, Cheng-Te Lin, Nan Jiang, and Jinhong Yu, Journal of Materials Chemistry A, 10, 593 (2022)

A Sub-k_BT/q Dirac-source Graphene Nanoribbon Field-Effect Transistor, E. Chen, A. Sanchez-Soares, T. Kelly, G. Fagas, J. C. Greer, 2021 International Conference on Simulation of Semiconductor Processes and Devices (SISPAD), 2021, p. 98-101, DOI: 10.1109/SISPAD54002.2021.9592541

Top-Gated Carbon Nanotube FETs from Quantum Simulations: Comparison with Experiments, A. Sanchez-Soares, T. Kelly, G. Fagas, J. C. Greer, E. Chen, 2021 International Symposium on VLSI Technology, Systems and Applications (VLSI-TSA) pp. 1-2, April 2021, DOI: 10.1109/VLSI-TSA51926.2021.9440104

Charge Carrier Dynamics for Silicon Oxide Tunneling Junctions Mediated by Local Pinholes, Zhenhai Yang, Zunke Liu, Mei Cui, Linna Lu, Li Chen, Jiang Sheng, Wei Guo, Xi Yang, Yunxing Zhao, Weichuang Yang, J. C. Greer, Yuheng Zeng, Baojie Yan, and Jichun Ye, Cell Reports Physical Science, 2, 100667 (2021)

Electronic Properties of Bismuth Nanostructures, Christian König, James C. Greer, Stephen Fahy, Physical Review B, 104, 045432 (2021)

Effect of Strain and Many-Body Corrections on the Band Inversions and Topology of Bismuth, Christian König, James C. Greer and S. Fahy, Physical Review B, 104, 035127 (2021)

Synergistic Effect of Carbon Fiber and Graphite on Reducing Thermal Resistance of Thermal Interface Materials, Maohua Li, Linhong Li, Xiao Hou, Yue Qin, Guichen Song, Xianzhe Wei, Xiangdong Kong, Zhenbang Zhang, Hainam Do, James C. Greer, Fei Han, Tao Cai, Wen Dai, Cheng-Te Lin, Nan Jiang, Jinhong Yu, Composites Science and Technology, 212, 108883 (2021)

Epitaxial Stabilization of Ge_1-xSn_x Alloys, Alfonso Sanchez-Soares, Conor O'Donnell, and James C. Greer, Journal of Physics D: Applied Physics, 54, 325302 (2021)

Impact of Stoichiometry and Strain on Ge_1-xSn_x Alloys from First Principles Calculations, C. O’Donnell, A. Sanchez-Soares, C. A. Broderick, and J. C. Greer, Journal of Physics D: Applied Physics, 54, 245103 (2021)

Stress Induced Carbon Fiber Orientation for Enhanced Thermal Conductivity of Epoxy Composites, Maohua Li, Zulfiqar Ali, Xianzhe Wei, Linhong Li, Guichen Song, Xiao Hou, Hainam Do, James C. Greer, Zhongbin Pan, Cheng-Te Lin, Nan Jiang, and Jinhong Yu, Composites Part B: Engineering, 208, 108599 (2021)

Electrode-Molecule Energy Level Offsets in a Gold-Benzene Diamine-Gold Single Molecule Tunnel Junction, Mark Szepieniec and J. C. Greer, Journal of Chemical Physics, 153, 174104 (2020)

Back-Contact Structures for Optoelectronic Devices: Applications and Perspectives, Zhenhai Yang, Jin Yan, Weichuang Yang, Yuheng Zeng, Jingsong Sun, Xinlong Wang, Xi Yang, J. C. Greer, Jiang Sheng, Baojie Yan, and Jichun Ye, Nano Energy, 78, 105362 (2020)

Device Physics of Back-Contact Perovskite Solar Cells, Z. Yang, W. Yang, X. Yang, J. C. Greer, J. Sheng, B. Yan, and J. Ye, Energy & Environmental Science, 13, 1753 (2020)

Patents

Semi-metal Rectifying Junction, Alfonso Sanchez Soares and James Greer, patent No.: US 10,892,327 B2, Date of Patent: January 12, 2021

Semi-metal Tunnel Field Effect Transistor, Lida Ansari, Giorgos Fagas, James Greer, Patent No.: US 10,658,460 B2, Date of Patent: May 19, 2020

During his early career, Professor Greer worked in various roles in the semiconductor industry. At United Technologies Mostek, he designed read-only-memory circuits and fabrication processes. At Texas Instruments, he developed models for high frequency bipolar transistors. At the invitation of the Japan Key Technology Center, he investigated atomic scale models for electronic materials at Hitachi’s Central Research Laboratory. In 1992, he was appointed the Quatercentenary Lecturer at Trinity College Dublin as part of the 400^th anniversary celebrations marking the founding of the university. His role was to promote high performance computing and multidisciplinary education. He joined the National Microelectronics Research Centre in Cork, Ireland, now Tyndall National Institute, in 1997.  There he recruited a team of researchers that are now recognised as world leaders in advanced electronic materials and electronic device physics. His work has led to collaborations with industry giants in electronics technology resulting in funded research projects, joint publications, and knowledge transfer.

Professor Greer was on the management board for the Emerging Nanopatterning Methods (NaPa), a project funded under the European Union’s nanotechnology initiative. The NaPa consortium consisted of 35 groups spread across 14 countries, including laboratories from both industry and academia. Until 2017, he was the director for the European Union excellent science initiative ASCENT tasked with providing access for the global research community to state-of-the-art infrastructure provided by the leading nanoelectronics laboratories in Europe. Professor Greer was recognised by the Government of Ireland as a “Champion of European Union Research”.

He was on the editorial boards of the Journal of Physics: Condensed Matter and the journal Microelectronics Engineering. He is recipient of the “Outstanding Researcher Award in Simulation and Metrology” as selected by the Intel Semiconductor Technology Committee – one of eleven such awards given worldwide. He is co-author of a textbook on nanowire transistors [Nanowire Transistors: Physics of Devices and Materials in One Dimension, Cambridge University Press: Cambridge (2016)]. He is currently on the advisory board for the Institute of Molecular Science and Engineering at Imperial College London.

Nanowire Transistors: Physics of Materials and Devices in One-Dimension

Key Enabling Technologies

Solid-state Device Engineering

Solid-state Circuit Design

Electronic Structure Methods

Signal Processing and Communications

Contemporary Engineering Themes (Nanoelectronics)

Computational Methods for Engineering & Science

Quantum Mechanics

Statistical Mechanics

Many-electron Theory