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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">dan-371</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>ВЛИЯНИЕ ВАКАНСИОННЫХ ДЕФЕКТОВ И ПРИМЕСЕЙ НА ЭЛЕКТРОННУЮ СТРУКТУРУ ДВУМЕРНЫХ КРИСТАЛЛОВ MoS2, MoSе2, WS2 И WSe2</article-title><trans-title-group xml:lang="en"><trans-title>INFLUENCE OF VACANCY DEFECTS AND IMPURITIES ON THE ELECTRONIC STRUCTURE OF TWO-DIMENSIONAL CRYSTALS OF MoS2, MoSе2, WS2 AND WSe2</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кривошеева</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Krivosheeva</surname><given-names>A, V,</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. физ.-мат. наук, старший научный сотрудник</p></bio><bio xml:lang="en"><p>Ph. D. (Physics and Mathematics), Senior researcher</p></bio><email xlink:type="simple">anna@nano.bsuir.edu.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шапошников</surname><given-names>В. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Shaposhnikov</surname><given-names>V. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. физ.-мат. наук, старший научный сотрудник</p></bio><bio xml:lang="en"><p>Ph. D. (Physics and Mathematics), Senior researcher</p></bio><email xlink:type="simple">victor.shaposhnikov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Борисенко</surname><given-names>В. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Borisenko</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р физ.-мат. наук, профессор, зав. кафедрой</p></bio><bio xml:lang="en"><p>D. Sc. (Physics and Mathematics), Professor, Head of the Department</p></bio><email xlink:type="simple">borisenko@bsuir.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет информатики и радиоэлектроники</institution></aff><aff xml:lang="en"><institution>Belarusian State University of Informatics and Radioelectronics</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>06</day><month>01</month><year>2017</year></pub-date><volume>60</volume><issue>6</issue><fpage>48</fpage><lpage>53</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кривошеева А.В., Шапошников В.Л., Борисенко В.Е., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Кривошеева А.В., Шапошников В.Л., Борисенко В.Е.</copyright-holder><copyright-holder xml:lang="en">Krivosheeva A.V., Shaposhnikov V.L., Borisenko V.E.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.belnauka.by/jour/article/view/371">https://doklady.belnauka.by/jour/article/view/371</self-uri><abstract><p>Исследованы возможности регулирования ширины запрещённой зоны у двумерных дихалькогенидов тугоплавких металлов MoS2, MoSe2, WS2 и WSe2 за счёт примесных атомов или вакансий. Рассмотрены случаи, когда атом кислорода замещает атом халькогена либо адсорбирован на поверхности. Замещающая примесь приводит к незначительному увеличению ширины запрещённой зоны, адсорбция атомов кислорода – к её уменьшению относительно нелегированного материала. Вакансия на месте атома халькогена приводит к изменению дисперсии зон и появлению дополнительных энергетических уровней.</p></abstract><trans-abstract xml:lang="en"><p>The possibility of band gap engineering by means of impurities or vacancies is investigated in two-dimensional dichalcogenide crystals of MoS2, MoSe2, WS2 and WSe2. Oxygen impurity atoms are considered to substitute chalcogen atoms or to adsorb at the surface of the crystal. The atom substitution leads to a slight increase in the energy band gap, while the adsorption of oxygen atoms at the surface decreases the gap relative to the unalloyed material. A vacancy in the position of the chalcogen atom leads to the change in the band dispersion and the appearance of additional energy levels.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>двумерные кристаллы</kwd><kwd>монослой</kwd><kwd>электронная структура</kwd><kwd>примесь</kwd><kwd>адсорбция</kwd><kwd>вакансия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>two-dimensional crystals</kwd><kwd>monolayer</kwd><kwd>electronic structure</kwd><kwd>impurity</kwd><kwd>adsorption</kwd><kwd>vacancy</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Китайгородский, А. И. Молекулярные кристаллы / А. И. Китайгородский. – M.: Наука, 1971. – 424 с.</mixed-citation><mixed-citation xml:lang="en">Kitaigorodskii A. I. Molecular crystals. Moscow, Nauka, 1971. 424 p. 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