What Are 2D Materials Good For?
Speaker: Prof. Eric Pop
Stanford University, U.S.A
DEIB - Alpha Room (Bld. 24)
July 8th, 2024 | 11.00 am
Contact: Prof. Daniele Ielmini
Research Line: Electron devices
Stanford University, U.S.A
DEIB - Alpha Room (Bld. 24)
July 8th, 2024 | 11.00 am
Contact: Prof. Daniele Ielmini
Research Line: Electron devices
Sommario
On July 8th, 2024 at 11.00 am will take place the seminar titleld "What Are 2D Materials Good For?" at DEIB Alpha Room (Building 24).
This talk will present my (biased!) perspective of what two-dimensional (2D) materials could be good for. For example, they could be good for applications where their ultrathin nature provides distinct advantages, such as flexible electronics [1], light-weight solar cells [2], or nanoscale transistors [3]. They may not be good where conventional materials work sufficiently well, like transistors thicker than a few nanometers. I will focus on 2D materials for 3D heterogeneous integration of electronics, which has major advantages for energy-efficient computing [4]. Here, 2D materials could be monolayer transistors with ultralow leakage [5] (due to larger band gaps than silicon), used to access high-density memory [6]. Recent results from our group [7-10] and others [11] have shown monolayer transistors with good performance, which cannot be reached with sub-nanometer thin conventional semiconductors, and the 2D performance could be further boosted by strain [10]. I will also describe some unconventional applications, using 2D materials as thermal insulators [12], heat spreaders [13], and thermal transistors [14]. These could enable control of heat in “thermal circuits” analogous with electrical circuits. Combined, these studies reveal fundamental limits and some key applications of 2D materials, which take advantage of their unique properties.
[1] A. Daus et al., Nat. Elec. 4, 495 (2021). [2] K.N. Nazif, et al., Nat. Comm. 12, 7034 (2021). [3] C. English et al., IEDM (2016). [4] M. Aly et al., Computer 48, 24 (2015). [5] C. Bailey et al., EMC (2019). [6] A. Khan et al. Science 373, 1243 (2021). [7] C. McClellan et al. ACS Nano 15, 1587 (2021). [8] R. Bennett & E. Pop, Nano Lett. 23, 1666 (2023). [9] J.S. Ko et al., VLSI Symp. (2024). [10] I. Datye et al., Nano Lett. 22, 8052 (2022). [11] S. Das et al., Nat. Elec. 4, 786 (2021). [12] S. Vaziri et al., Science Adv. 5, eaax1325 (2019). [13] C. Koroglu & E. Pop, EDL 44, 496 (2023). [14] M. Chen et al., 2D Mat. 8, 035055 (2021).
Eric Pop is the Pease-Ye Professor of Electrical Engineering and, by courtesy, of Applied Physics and of Materials Science & Engineering at Stanford, where he leads the SystemX Heterogeneous Integration focus area. His research interests include nanoelectronics, data storage, and energy. Before Stanford, he spent several years on the faculty of UIUC, and in industry at Intel and IBM. He is an APS and IEEE Fellow, a Clarivate Highly Cited Researcher, a recipient of the Intel Outstanding Researcher Award and of the Presidential Early-Career award from the White House. In his spare time he enjoys snowboarding and tennis, and in a past life he was a college radio DJ at KZSU 90.1. More information about the Pop Lab is available online at http://poplab.stanford.edu and on Twitter @profericpop.
Contact: epop@stanford.edu
This talk will present my (biased!) perspective of what two-dimensional (2D) materials could be good for. For example, they could be good for applications where their ultrathin nature provides distinct advantages, such as flexible electronics [1], light-weight solar cells [2], or nanoscale transistors [3]. They may not be good where conventional materials work sufficiently well, like transistors thicker than a few nanometers. I will focus on 2D materials for 3D heterogeneous integration of electronics, which has major advantages for energy-efficient computing [4]. Here, 2D materials could be monolayer transistors with ultralow leakage [5] (due to larger band gaps than silicon), used to access high-density memory [6]. Recent results from our group [7-10] and others [11] have shown monolayer transistors with good performance, which cannot be reached with sub-nanometer thin conventional semiconductors, and the 2D performance could be further boosted by strain [10]. I will also describe some unconventional applications, using 2D materials as thermal insulators [12], heat spreaders [13], and thermal transistors [14]. These could enable control of heat in “thermal circuits” analogous with electrical circuits. Combined, these studies reveal fundamental limits and some key applications of 2D materials, which take advantage of their unique properties.
[1] A. Daus et al., Nat. Elec. 4, 495 (2021). [2] K.N. Nazif, et al., Nat. Comm. 12, 7034 (2021). [3] C. English et al., IEDM (2016). [4] M. Aly et al., Computer 48, 24 (2015). [5] C. Bailey et al., EMC (2019). [6] A. Khan et al. Science 373, 1243 (2021). [7] C. McClellan et al. ACS Nano 15, 1587 (2021). [8] R. Bennett & E. Pop, Nano Lett. 23, 1666 (2023). [9] J.S. Ko et al., VLSI Symp. (2024). [10] I. Datye et al., Nano Lett. 22, 8052 (2022). [11] S. Das et al., Nat. Elec. 4, 786 (2021). [12] S. Vaziri et al., Science Adv. 5, eaax1325 (2019). [13] C. Koroglu & E. Pop, EDL 44, 496 (2023). [14] M. Chen et al., 2D Mat. 8, 035055 (2021).
Eric Pop is the Pease-Ye Professor of Electrical Engineering and, by courtesy, of Applied Physics and of Materials Science & Engineering at Stanford, where he leads the SystemX Heterogeneous Integration focus area. His research interests include nanoelectronics, data storage, and energy. Before Stanford, he spent several years on the faculty of UIUC, and in industry at Intel and IBM. He is an APS and IEEE Fellow, a Clarivate Highly Cited Researcher, a recipient of the Intel Outstanding Researcher Award and of the Presidential Early-Career award from the White House. In his spare time he enjoys snowboarding and tennis, and in a past life he was a college radio DJ at KZSU 90.1. More information about the Pop Lab is available online at http://poplab.stanford.edu and on Twitter @profericpop.
Contact: epop@stanford.edu
