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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">bsuir</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады БГУИР</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady BGUIR</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-7648</issn><issn pub-type="epub">2708-0382</issn><publisher><publisher-name>БГУИР</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35596/1729-7648-2021-19-6-74-82</article-id><article-id custom-type="elpub" pub-id-type="custom">bsuir-3161</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>ЭЛЕКТРОНИКА, РАДИОФИЗИКА, РАДИОТЕХНИКА, ИНФОРМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRONICS, RADIOPHYSICS, RADIOENGINEERING, INFORMATICS</subject></subj-group></article-categories><title-group><article-title>Нитрид-галлиевый гетероструктурный полевой транзистор с системой теплоотвода на основе канавки в слое пассивации, заполненной материалом с высокой теплопроводностью</article-title><trans-title-group xml:lang="en"><trans-title>Gallium nitride heterostructure field-effect transistor with a heat-removal system based on a trench in the passivation layer filled by a high thermal conductivity material</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>Волчёк</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Volcheck</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Волчёк Владислав Сергеевич, научный сотрудник НИЛ 4.4 НИЧ</p><p>220013, Минск, ул. П. Бровки, 6</p></bio><bio xml:lang="en"><p>Volcheck Vladislav S., Researcher at the R&amp;D Laboratory 4.4 of R&amp;D Department</p><p>220013, Minsk, P. Brovki str., 6</p></bio><email xlink:type="simple">vlad.volchek@bsuir.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>Стемпицкий</surname><given-names>В. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Stempitsky</surname><given-names>V. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук, доцент, начальник НИЧ</p><p>Минск</p></bio><bio xml:lang="en"><p>Stempitsky Viktor R., PhD, Associate Professor, Head of R&amp;D Department</p><p>Minsk</p></bio><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>2021</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2021</year></pub-date><volume>19</volume><issue>6</issue><fpage>74</fpage><lpage>82</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Волчёк В.С., Стемпицкий В.Р., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Волчёк В.С., Стемпицкий В.Р.</copyright-holder><copyright-holder xml:lang="en">Volcheck V.S., Stempitsky V.R.</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.bsuir.by/jour/article/view/3161">https://doklady.bsuir.by/jour/article/view/3161</self-uri><abstract><p>Эффект саморазогрева представляет собой главную проблему для мощных электронных и оптоэлектронных приборов на основе нитрида галлия. Неравномерное распределение рассеиваемой мощности и повышение средней температуры в структуре нитрид-галлиевого гетероструктурного полевого транзистора приводят к появлению области с очень высокой температурой в окрестности проводящего канала, деградации тока стока и выходной мощности, а также ухудшению надежности прибора. Целью данной работы является разработка конструкции гетероструктурного полевого транзистора на основе нитрида галлия с эффективной системой теплоотвода и исследование с помощью численного моделирования особенностей тепловых процессов, протекающих в структуре этого прибора. Объектами исследования служат созданные на сапфировой подложке приборные структуры, отличительными особенностями которых являются теплоотводящий элемент на основе графена, располагающийся на поверхности транзистора, и канавка в слое пассивации, заполненная материалом с высокой теплопроводностью. Предметом исследования являются электрические и тепловые характеристики указанных приборных структур. Результаты моделирования подтверждают эффективность внедрения в конструкцию гетероструктурного полевого транзистора на основе нитрида галлия разработанной системы теплоотвода, позволяющей уменьшить влияние эффекта саморазогрева и улучшить эксплуатационные характеристики прибора. Преимущество предлагаемой концепции состоит в том, что теплоотводящий элемент конструктивно соединен с теплопоглощающим элементом и предназначен для отведения тепла непосредственно от области максимальной температуры через канавку в слое пассивации, в которой осажден слой материала с высокой теплопроводностью. Полученные результаты могут быть использованы предприятиями электронной промышленности Республики Беларусь при создании элементной базы силовой электроники на основе нитрида галлия.</p></abstract><trans-abstract xml:lang="en"><p>The self-heating effect poses a main problem for high-power electronic and optoelectronic devices based on gallium nitride. A non-uniform distribution of the dissipated power and a rise of the average temperature inside the gallium nitride heterostructure field-effect transistor lead to the formation of a hot spot near the conducting channel and result in the degradation of the drain current, output power and device reliability. The purpose of this work is to develop the design of a gallium nitride heterostructure field-effect transistor with an effective heat-removal system and to study using numerical simulation the thermal phenomena specific to this device. The objects of the research are the device structures formed on sapphire, each of whom features both a graphene heat-eliminating element on its top surface and a trench in the passivation layer filled by a high thermal conductivity material. The subject of the research is the electrical and thermal characteristics of these device structures. The simulation results verify the effectiveness of the integration of the heat-removal system into the gallium nitride heterostructure field-effect transistor that can mitigate the self-heating effect and improve the device performance. The advantage of our concept is that the graphene heat-eliminating element is structurally connected with a heat sink and is designed for removing the heat immediately from the maximum temperature area through the trench in which a high thermal conductivity material is deposited. The results can be used by the electronics industry of the Republic of Belarus for developing the hardware components of gallium nitride power electronics.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гетероструктурный полевой транзистор</kwd><kwd>графен</kwd><kwd>нитрид галлия</kwd><kwd>саморазогрев</kwd><kwd>силовая электроника</kwd><kwd>слой пассивации</kwd><kwd>теплоотвод</kwd><kwd>теплопроводность</kwd><kwd>температура</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heterostructure field-effect transistor</kwd><kwd>grapheme</kwd><kwd>gallium nitride</kwd><kwd>self-heating simulation</kwd><kwd>power electronics</kwd><kwd>passivation layer</kwd><kwd>heat-removal system</kwd><kwd>thermal conductivity</kwd><kwd>temperature</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования проводятся в рамках выполнения задания 3.1 государственной программы научных исследований «Фотоника и электроника для инноваций». Авторы выражают благодарность М.С. Барановой и Д.Ч. Гвоздовскому за предоставление данных о температурной зависимости теплопроводности нитридов элементов III группы и нитрида кремния.</funding-statement><funding-statement xml:lang="en">This work is supported by the grant 3.1 of Belarusian National Scientific Research Program “Photonics and Electronics for Innovations”. The authors would like to express special thanks to Baranova M.S. and Hvazdouski D.C. for providing the data on the temperature dependence of the thermal conductivity of the group III nitrides and silicon nitride.</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">Yan Z., Liu G., Khan J.M., Balandin A.A. Graphene Quilts for Thermal Management of High-Power GaN Transistors. Nature Communications. 2012;3:827. DOI: 10.1038/ncomms1828.</mixed-citation><mixed-citation xml:lang="en">Yan Z., Liu G., Khan J.M., Balandin A.A. 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