{"title":"Elastic Energy Relaxation in the Chemical Reaction of CO with Single-Crystalline Silicon during Coordinated Substitution of Atoms","authors":"S. A. Kukushkin, A. V. Osipov","doi":"10.1134/s0036023623603227","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This study provides a detailed microscopic description of the chemical transformation of a silicon crystal into a silicon carbide crystal via reaction with carbon monoxide gas at the Si(111) surface. This was done using density functional theory in the spin-polarized PBE approximation. All intermediate (adsorption) states and the single transition state were identified using the NEB method. It was shown that the transition state is an Si–O–C triangle with bond lengths of 1.94, 1.24, and 2.29 Å. Additionally, the energy profile of this chemical reaction was calculated. The presence of dangling bonds was found to generate both electric and magnetic fields during the reaction. According to the results, the relaxation of elastic energy provides efficient ordering of the growing crystals by weakening the bonds of the certain atoms. That is why the (111) surface is the optimal for silicon carbide growth by this method for semiconductor applications.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"14 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Inorganic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1134/s0036023623603227","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
This study provides a detailed microscopic description of the chemical transformation of a silicon crystal into a silicon carbide crystal via reaction with carbon monoxide gas at the Si(111) surface. This was done using density functional theory in the spin-polarized PBE approximation. All intermediate (adsorption) states and the single transition state were identified using the NEB method. It was shown that the transition state is an Si–O–C triangle with bond lengths of 1.94, 1.24, and 2.29 Å. Additionally, the energy profile of this chemical reaction was calculated. The presence of dangling bonds was found to generate both electric and magnetic fields during the reaction. According to the results, the relaxation of elastic energy provides efficient ordering of the growing crystals by weakening the bonds of the certain atoms. That is why the (111) surface is the optimal for silicon carbide growth by this method for semiconductor applications.
期刊介绍：
Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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