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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">vestnovsu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Новгородского государственного университета</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik of Novgorod State University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2076-8052</issn><publisher><publisher-name>Новгородский государственный университет имени Ярослава Мудрого</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.34680/2076-8052.2021.2(123).21-26</article-id><article-id custom-type="elpub" pub-id-type="custom">vestnovsu-171</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</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Electronics</subject></subj-group></article-categories><title-group><article-title>Плазменное травление структур GaN/AlGaN в хлорсодержащей среде Cl2/Ar/O2</article-title><trans-title-group xml:lang="en"><trans-title>Plasma etching of GaN/AlGaN structures in a chlorine-containing medium Cl2/Ar/O2</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>Желаннов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhelannov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Великий Новгород</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Селезнев</surname><given-names>Б. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Seleznev</surname><given-names>B. I.</given-names></name></name-alternatives><email xlink:type="simple">Boris.Seleznev@novsu.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>Федоров</surname><given-names>Д. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedorov</surname><given-names>D. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Великий Новгород</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>ОАО «ОКБ-Планета»</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-2"><institution>Новгородский государственный университет имени Ярослава Мудрого</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>22</day><month>09</month><year>2023</year></pub-date><volume>0</volume><issue>2(123)</issue><fpage>21</fpage><lpage>26</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Желаннов А.В., Селезнев Б.И., Федоров Д.Г., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Желаннов А.В., Селезнев Б.И., Федоров Д.Г.</copyright-holder><copyright-holder xml:lang="en">Zhelannov A.V., Seleznev B.I., Fedorov D.G.</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://vestnovsu.elpub.ru/jour/article/view/171">https://vestnovsu.elpub.ru/jour/article/view/171</self-uri><abstract><p>Рассмотрено травление гетероструктур GaN/AlGaN на установке Sentech SI-500 с источником индуктивно-связанной плазмы. Травление проводилось в хлорсодержащей газовой смеси Cl2/Ar с добавкой различных количеств кислорода. Исследовано влияние различных технологических факторов на скорость травления и селективность травления между слоями GaN и AlGaN: количество кислорода в газовой смеси, мощность источника индуктивно-связанной плазмы, высокочастотная мощность. Установлены режимы травления, при которых селективность травления слоев GaN/AlGaN достигает 30:1. С помощью разработанной технологии плазменного травления подготовлен маршрут изготовления транзисторов на основе гетероструктур с проводящими cap-слоями. Показано улучшение характеристик при использовании проводящего cap-слоя за счет уменьшения контактного сопротивления и сопротивления канала. Получены значения плотности тока 380 мА/мм и крутизны 143 мСм/мм.</p></abstract><trans-abstract xml:lang="en"><p>Etching of GaN/AlGaN heterostructures on a Sentech SI-500 installation with an inductively coupled plasma source is considered. Etching was carried out in a chlorine-containing Cl2/Ar gas mixture with the addition of various amounts of oxygen. The influence of various technological factors on the etching rate and etching selectivity between GaN and AlGaN layers: the amount of oxygen in the gas mixture, power source, inductively coupled plasma, high-frequency power. Etching modes have been established in which the selectivity of etching of GaN/AlGaN layers reaches 30:1. Based on the developed plasma etching technology, a route for manufacturing transistors based on heterostructures with conductive cap layers has been developed. It is shown that the characteristics are improved when using a conductive cap layer by reducing the contact resistance and channel resistance. The values of the current density of 380 mA/mm and the steepness of 143 mS/mm are obtained.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нитрид галлия</kwd><kwd>гетероструктура AlGaN/GaN</kwd><kwd>травление</kwd><kwd>индуктивно-связанная плазма</kwd><kwd>хлор</kwd><kwd>кислород</kwd><kwd>селективность</kwd><kwd>технологический процесс</kwd><kwd>транзисторная структура</kwd><kwd>выходные характеристики</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gallium nitride</kwd><kwd>heterostructure GaN/AlGaN</kwd><kwd>etching</kwd><kwd>inductively coupled plasma</kwd><kwd>chlorine</kwd><kwd>oxygen</kwd><kwd>selectivity</kwd><kwd>technological process</kwd><kwd>transistor structure</kwd><kwd>output characteristics</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">Балакирев А., Туркин А. Перспективы нитрида галлия в СВЧ-электронике. 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