{"title":"Switchable bulk photovoltaic effect in 2D room temperature ferroelectric CuInP2S6","authors":"Chengwei Liao, Minglong Wang, Yujun Zhao","doi":"10.1039/d4ta03402c","DOIUrl":null,"url":null,"abstract":"The bulk photovoltaic effect (BPVE) is a crucial branch of nonlinear optics, that plays a significant role in fundamental physics and practical applications. In this study, we have investigated the BPVE of a room-temperature ferroelectric material CuInP2S6 (CIPS) through first-principles calculations and nonlinear response theory. It is revealed that, there are significant differences in the nonlinear photo-responsivity among the ferroelectric, paraelectric, and antiferroelectric phases under monochromatic light. We find that the nonlinear photocurrent can be switched by the chirality of the incident light, depending on the structural symmetry. Using the CI-NEB method, we have studied the evolution of photocurrent during phase transition processes such as polarization reversal and polar-to-nonpolar transitions. We observe that the reversal of ferroelectric ordering can induce a photocurrent flip, attributed to the sign change of topological physical quantities such as the shift vector and Berry curvature. Furthermore, we predict the modulation of photocurrent through chalcogen element substitution and strain engineering. Our study provides an insight to the nonlinear optics of ferroelectric materials and crucial theoretical guidance for the design of optoelectronic and photonic devices.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":null,"pages":null},"PeriodicalIF":10.7000,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4ta03402c","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The bulk photovoltaic effect (BPVE) is a crucial branch of nonlinear optics, that plays a significant role in fundamental physics and practical applications. In this study, we have investigated the BPVE of a room-temperature ferroelectric material CuInP2S6 (CIPS) through first-principles calculations and nonlinear response theory. It is revealed that, there are significant differences in the nonlinear photo-responsivity among the ferroelectric, paraelectric, and antiferroelectric phases under monochromatic light. We find that the nonlinear photocurrent can be switched by the chirality of the incident light, depending on the structural symmetry. Using the CI-NEB method, we have studied the evolution of photocurrent during phase transition processes such as polarization reversal and polar-to-nonpolar transitions. We observe that the reversal of ferroelectric ordering can induce a photocurrent flip, attributed to the sign change of topological physical quantities such as the shift vector and Berry curvature. Furthermore, we predict the modulation of photocurrent through chalcogen element substitution and strain engineering. Our study provides an insight to the nonlinear optics of ferroelectric materials and crucial theoretical guidance for the design of optoelectronic and photonic devices.
期刊介绍:
The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.