Zhi-Yuan Qiu, Ya-Le Tao, Qi-Jun Liu, Zheng-Tang Liu
{"title":"单层 ZrX3(X = S、Se、Te)结构、电子和光学特性的第一性原理研究。","authors":"Zhi-Yuan Qiu, Ya-Le Tao, Qi-Jun Liu, Zheng-Tang Liu","doi":"10.1007/s00894-024-06112-x","DOIUrl":null,"url":null,"abstract":"<p><strong>Context and results: </strong>The structure, electronic and optical properties of single-layer transition metallic chalcogenides ZrX<sub>3</sub> (X = S, Se, Te) have been studied by density functional theory. The electron energy dispersion curve shows that ZrX<sub>3</sub> has semiconductor properties, in which the conduction band is mainly contributed by the correlated states of the Zr-d orbital, and the valence band is mainly contributed by the correlated states of the X-p orbital. It is found that b-axis and biaxial strain have great influence on the bandgap and the shift of density of states is also large. At the same time, the peak value of density of states increases greatly when biaxial strain is applied. It is of guiding significance for selecting suitable substrates to prepare two-dimensional ZrX<sub>3</sub> materials to study their electronic properties. The calculation of optical constants confirms that ZrX<sub>3</sub> has strong optical anisotropy. In the visible range, the light absorption efficiency of ZrX<sub>3</sub> in the direction of electric field polarization [100] is higher than that in the direction of [010]. The reflectance spectral results show that ZrS<sub>3</sub> and ZrSe<sub>3</sub> in the [100] directions have the highest reflectance, and ZrTe<sub>3</sub> in the [010] direction has the highest reflectance, even in the long electromagnetic radiation range (up to 10 eV), which is of great significance for the construction of visible optical devices.</p><p><strong>Computational method: </strong>All computations have been carried out based on density functional theory (DFT) as implemented in the CASTEP code. The pseudo-potential is adopted by the norm conserving, and the exchange correlation functional is adopted by the Perdew-Burke-Ernzerhof in local generalized gradient approximation (GGA).</p>","PeriodicalId":651,"journal":{"name":"Journal of Molecular Modeling","volume":null,"pages":null},"PeriodicalIF":2.1000,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"First-principles study of the structure, electronic and optical properties of monolayer ZrX<sub>3</sub> (X = S, Se, Te).\",\"authors\":\"Zhi-Yuan Qiu, Ya-Le Tao, Qi-Jun Liu, Zheng-Tang Liu\",\"doi\":\"10.1007/s00894-024-06112-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Context and results: </strong>The structure, electronic and optical properties of single-layer transition metallic chalcogenides ZrX<sub>3</sub> (X = S, Se, Te) have been studied by density functional theory. The electron energy dispersion curve shows that ZrX<sub>3</sub> has semiconductor properties, in which the conduction band is mainly contributed by the correlated states of the Zr-d orbital, and the valence band is mainly contributed by the correlated states of the X-p orbital. It is found that b-axis and biaxial strain have great influence on the bandgap and the shift of density of states is also large. At the same time, the peak value of density of states increases greatly when biaxial strain is applied. It is of guiding significance for selecting suitable substrates to prepare two-dimensional ZrX<sub>3</sub> materials to study their electronic properties. The calculation of optical constants confirms that ZrX<sub>3</sub> has strong optical anisotropy. In the visible range, the light absorption efficiency of ZrX<sub>3</sub> in the direction of electric field polarization [100] is higher than that in the direction of [010]. The reflectance spectral results show that ZrS<sub>3</sub> and ZrSe<sub>3</sub> in the [100] directions have the highest reflectance, and ZrTe<sub>3</sub> in the [010] direction has the highest reflectance, even in the long electromagnetic radiation range (up to 10 eV), which is of great significance for the construction of visible optical devices.</p><p><strong>Computational method: </strong>All computations have been carried out based on density functional theory (DFT) as implemented in the CASTEP code. The pseudo-potential is adopted by the norm conserving, and the exchange correlation functional is adopted by the Perdew-Burke-Ernzerhof in local generalized gradient approximation (GGA).</p>\",\"PeriodicalId\":651,\"journal\":{\"name\":\"Journal of Molecular Modeling\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2024-08-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Molecular Modeling\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s00894-024-06112-x\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"BIOCHEMISTRY & MOLECULAR BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Molecular Modeling","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s00894-024-06112-x","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
First-principles study of the structure, electronic and optical properties of monolayer ZrX3 (X = S, Se, Te).
Context and results: The structure, electronic and optical properties of single-layer transition metallic chalcogenides ZrX3 (X = S, Se, Te) have been studied by density functional theory. The electron energy dispersion curve shows that ZrX3 has semiconductor properties, in which the conduction band is mainly contributed by the correlated states of the Zr-d orbital, and the valence band is mainly contributed by the correlated states of the X-p orbital. It is found that b-axis and biaxial strain have great influence on the bandgap and the shift of density of states is also large. At the same time, the peak value of density of states increases greatly when biaxial strain is applied. It is of guiding significance for selecting suitable substrates to prepare two-dimensional ZrX3 materials to study their electronic properties. The calculation of optical constants confirms that ZrX3 has strong optical anisotropy. In the visible range, the light absorption efficiency of ZrX3 in the direction of electric field polarization [100] is higher than that in the direction of [010]. The reflectance spectral results show that ZrS3 and ZrSe3 in the [100] directions have the highest reflectance, and ZrTe3 in the [010] direction has the highest reflectance, even in the long electromagnetic radiation range (up to 10 eV), which is of great significance for the construction of visible optical devices.
Computational method: All computations have been carried out based on density functional theory (DFT) as implemented in the CASTEP code. The pseudo-potential is adopted by the norm conserving, and the exchange correlation functional is adopted by the Perdew-Burke-Ernzerhof in local generalized gradient approximation (GGA).
期刊介绍:
The Journal of Molecular Modeling focuses on "hardcore" modeling, publishing high-quality research and reports. Founded in 1995 as a purely electronic journal, it has adapted its format to include a full-color print edition, and adjusted its aims and scope fit the fast-changing field of molecular modeling, with a particular focus on three-dimensional modeling.
Today, the journal covers all aspects of molecular modeling including life science modeling; materials modeling; new methods; and computational chemistry.
Topics include computer-aided molecular design; rational drug design, de novo ligand design, receptor modeling and docking; cheminformatics, data analysis, visualization and mining; computational medicinal chemistry; homology modeling; simulation of peptides, DNA and other biopolymers; quantitative structure-activity relationships (QSAR) and ADME-modeling; modeling of biological reaction mechanisms; and combined experimental and computational studies in which calculations play a major role.