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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.47612/0514-7506-2022-89-1-43-50</article-id><article-id custom-type="elpub" pub-id-type="custom">zhps-968</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>II. МОЛЕКУЛЯРНАЯ СПЕКТРОСКОПИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MOLECULAR SPECTROSCOPY</subject></subj-group></article-categories><title-group><article-title>Чисто электронный оптический переход и прямая энергетическая щель полупроводника</article-title><trans-title-group xml:lang="en"><trans-title>Vertical Pure Electronic Optical Transition and Semiconductor Direct Band Gap</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>Толкачёв</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tolkachev</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><email xlink:type="simple">tolkachev@ifanbel.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики НАН Беларуси</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>02</day><month>02</month><year>2022</year></pub-date><volume>89</volume><issue>1</issue><fpage>43</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Толкачёв В.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Толкачёв В.А.</copyright-holder><copyright-holder xml:lang="en">Tolkachev V.A.</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://zhps.ejournal.by/jour/article/view/968">https://zhps.ejournal.by/jour/article/view/968</self-uri><abstract><p>С положительным результатом тестируется возможность применения метода определения частоты чисто электронного перехода по молекулярным диффузным вибронным спектрам к определению ширины прямой запрещенной зоны (энергетической щели) полупроводников. Данным методом из спектра фотопроводимости определяется ширина прямой запрещенной зоны между валентной зоной и зоной фотопроводимости.</p></abstract><trans-abstract xml:lang="en"><p>It is shown that the method of determining the frequency of pure electronic transition from molecular diffuse vibrational spectra is applicable for the estimation of a semiconductor direct band gap. This method is used to determine the direct band gap between the valence band and the photoconductivity band from the photoconductivity spectrum.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>полупроводник</kwd><kwd>запрещенная зона</kwd><kwd>фотопроводимость</kwd><kwd>запрещенная зона фотопроводимости</kwd><kwd>однородность полупроводника</kwd></kwd-group><kwd-group xml:lang="en"><kwd>semiconductor</kwd><kwd>band gap</kwd><kwd>photoconductivity</kwd><kwd>photoconductivity band gap</kwd><kwd>semiconductor homogeneity</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">В. А. Толкачёв. Журн. прикл. спектр., 84 (2017) 673—679.</mixed-citation><mixed-citation xml:lang="en">V. A. Tolkachev. J. Appl. Spectr., 84 (2017) 668—673.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">В. А. Толкачев. 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