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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">mateltech</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Материалы электронной техники</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1609-3577</issn><issn pub-type="epub">2413-6387</issn><publisher><publisher-name>MISIS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/1609-3577-2017-2-122-128</article-id><article-id custom-type="elpub" pub-id-type="custom">mateltech-309</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>Физические свойства и методы исследования</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICAL CHARACTERISTICS AND THEIR STUDY</subject></subj-group></article-categories><title-group><article-title>Расчет потенциального барьера на границах кристаллитов в поли− и нанокристаллических полупроводниках</article-title><trans-title-group xml:lang="en"><trans-title>Calculation of the grain potential barrier in the poly− and nanocrystalline semiconductors</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>Ильин</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Ilin</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Физический факультет</p><p>аспирант</p></bio><bio xml:lang="en"><p>Faculty of Physics</p></bio><email xlink:type="simple">as.ilin@physics.msu.ru</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>Гололобов</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Gololobov</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Физический факультет</p><p>аспирант</p></bio><bio xml:lang="en"><p>Faculty of Physics</p></bio><email xlink:type="simple">Viktor-Gololobov@yandex.ru</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>Форш</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Forsh</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. физ.−мат. наук, заместитель начальника отдела</p></bio><email xlink:type="simple">forsh_kate@list.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Форш</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Forsh</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Физический факультет</p><p>доктор физ.− мат. наук, ведущий научный сотрудник</p></bio><bio xml:lang="en"><p>Faculty of Physics</p></bio><email xlink:type="simple">phorsh@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кашкаров</surname><given-names>П. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Kashkarov</surname><given-names>P. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Физический факультет</p><p>доктор физ.−мат. наук, заведующий кафедрой</p></bio><bio xml:lang="en"><p>Faculty of Physics</p></bio><email xlink:type="simple">pavel@vega.phys.msu.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский центр «Курчатовский институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Centre «Kurchatov Institute»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Московский государственный университет имени М. В. Ломоносова; Национальный исследовательский центр «Курчатовский институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University; &#13;
National Research Centre «Kurchatov Institute»</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>17</day><month>06</month><year>2019</year></pub-date><volume>20</volume><issue>2</issue><fpage>122</fpage><lpage>128</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ильин А.С., Гололобов В.М., Форш Е.А., Форш П.А., Кашкаров П.К., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Ильин А.С., Гололобов В.М., Форш Е.А., Форш П.А., Кашкаров П.К.</copyright-holder><copyright-holder xml:lang="en">Ilin A.S., Gololobov V.M., Forsh E.A., Forsh P.A., Kashkarov P.K.</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://met.misis.ru/jour/article/view/309">https://met.misis.ru/jour/article/view/309</self-uri><abstract><p>Проведен численный расчет распределения потенциала и параметров потенциального барьера для электронов в полупроводниковом кристаллите. Расчет выполнен в кристаллите сферической формы с равномерно распределенными поверхностными состояниями и равномерно распределенными донорами. При расчете учтено, что экранировка поверхностного заряда происходит на ионизованных донорах, а также на свободных электронах, экранировкой на которых нельзя пренебрегать в полупроводниках с высокой концентрацией свободных электронов. Показано, что высота потенциального барьера немонотонно зависит от концентрации доноров в кристаллите. При этом на зависимости высоты потенциального барьера от концентрации доноров можно выделить два участка, соответствующих случаям полного и частичного истощения кристаллита. На первом участке высота потенциального барьера возрастает с ростом концентрации доноров, а на втором — падает. Установлено, что высота потенциального барьера возрастает при увеличении концентрации поверхностных состояний. Оценена возможность появления поверхностных потенциальных барьеров в нано− и поликристаллических металлооксидных полупроводниках, применяемых в качестве чувствительного слоя газовых сенсоров. Сделан вывод о том, что в случае, когда радиус кристаллитов в металлооксидных полупроводниках не превышает 10 нм, объяснение чувствительности сенсора к газу с помощью часто используемой барьерной модели представляется маловероятным. Продемонстрирована необходимость учета формы кристаллита и экранирования поверхностного заряда свободными носителями для расчета ширины потенциального барьера.</p></abstract><trans-abstract xml:lang="en"><p>The distribution of potential and parameters of potential barrier in semiconductor crystallite was calculated numerically. The calculation was carried out in spherical crystallite with evenly distributed donors and surface states. The calculation assumed that the surface charge is screened by both ionized donors and free electrons, the contribution of which cannot be neglected in semiconductors with high concentration of free electrons. The height of potential barrier is shown to nonmonotonically depend on the concentration of donors. The dependence of height of potential barrier on the concentration of donors may be divided into two part. One part of dependence describes the fully depleted crystallite and the second part describes the party depleted crystallite. On the first part the height of potential barrier increases with the donor concentration but on the second part the height of potential barrier decreases. The height of the potential barrier increases with increasing of concentration of surface states. The possibility of existing of potential barriers is estimated in nano− and polycrystalline metal oxide semiconductors used as sensitive layers of gas sensors. It is concluded that if the radius of crystal grains in metal oxide semiconductors does not exceed 10 nm, the explanation of the sensitivity of the sensor to gas by using a commonly barrier model seems unlikely. It is demonstrated that shape of crystallite and the contribution of free electrons to screening of surface charge have to be taken into account to calculation of width of potential barrier.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>полупроводник</kwd><kwd>сферический кристаллит</kwd><kwd>изгиб энергетических зон</kwd><kwd>потенциальный барьер</kwd><kwd>электронный транспорт</kwd><kwd>электрические свойства</kwd><kwd>газовые сенсоры</kwd></kwd-group><kwd-group xml:lang="en"><kwd>semiconductor</kwd><kwd>spherical crystall</kwd><kwd>energy zone bending</kwd><kwd>potential barrier</kwd><kwd>electrical transport</kwd><kwd>electric properties</kwd><kwd>gas sensor</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке РФФИ (проекты № 16−32−60060 мол_а_дк и № 15−29−01185 офи_м).</funding-statement><funding-statement xml:lang="en">This work was supported by the Russian Foundation for Basic Research (projects No. 16-32-60060 mol_a_dk and No. 15-29-01185 ofi_m).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Zhang J., Liu X., Neri G., Pinna N. 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