Tuning the symmetry of materials: Design of two-dimensional ferroelectric and piezoelectric materials

Authors

Shi-Hsin Lin Department of Materials and Optoelectronic Science, National Sun Yat-sen University

Abstract

We proposed tuning and inducing ferroelectric and piezoelectric properties of two-dimensional materials with adatoms and defects engineering. We performed first-principles calculations to demonstrate the proposal and predict corresponding ferroelectric and piezoelectric properties. Two-dimensional materials can serve as building blocks to assemble new materials in a designed manner. In this work, we proposed to explicitly break the centrosymmetry with adatoms and defects and therefore induce ferroelectricity or piezoelectricity. Our proposal is in principle valid with any two-dimensional materials, and thus those with mature synthesis technologies, such as graphene, or transition metal chalcogenides can be used to create new ferroelectric or piezoelectric materials. Our proposed design principle for ferroelectric and piezoelectric materials can have out-of-plane polarization and could be more accessible than intrinsic ferroelectric and piezoelectric materials.

About the Speaker

Shi-Hsin Lin, Department of Materials and Optoelectronic Science, National Sun Yat-sen University

Albert Shi-Hsin Lin is an Associate Professor at the Department of Materials and Optoelectronic Science in National Sun Yat-sen University (NSYSU). He received his PhD degree in Physics from the University of Notre Dame, IN, USA. He was a visiting scholar in the University of Antwerp, Belgium, and later a postdoctoral researcher in Academia Sinica, Taiwan. He joined the faculty of the Department of Materials and Optoelectronic Science, NSYSU in 2016 as an Assistant Professor, and was promoted to Associate Professor in 2021. He worked on theoretical and computational condensed matter physics, including mesoscopic superconductors, superconductor related hybrid materials, density functional calculations of two-dimensional materials, hydrogen evolution reaction electrode materials, and ion batteries.

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Issue

2023: Proceedings of the 41st Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2023-INV-3F-01

Section

Invited Presentations

Published

2023-07-01

How to Cite

[1]

S-H Lin, Tuning the symmetry of materials: Design of two-dimensional ferroelectric and piezoelectric materials, Proceedings of the Samahang Pisika ng Pilipinas 41, SPP-2023-INV-3F-01 (2023). URL: https://proceedings.spp-online.org/article/view/SPP-2023-INV-3F-01.