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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">10.35596/1729-7648-2022-20-3-13-19</article-id><article-id custom-type="elpub" pub-id-type="custom">bsuir-3362</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>Влияние температуры быстрого термического отжига на электрофизические свойства омического контакта металлизации Ti/Al/Ni к гетероструктуре GaN/AlGaN</article-title><trans-title-group xml:lang="en"><trans-title>Effect of Rapid Thermal Annealing Temperature on the Electrophysical Properties of the Ohmic Contact of Ti/Al/Ni Metallization to the GaN/AlGaN Heterostructure</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>Юник</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Yunik</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юник Андрей Дмитриевич, ведущий инженер отраслевой лаборатории новых технологий и материалов</p><p>220108, г. Минск, ул. Корженевского, д. 16, к. 247тел. +375-29-854-66-51</p></bio><bio xml:lang="en"><p>Yunik Andrei Dmitrievich, Leading Engineer of the Branch Laboratory of New Technologies and Materials</p><p>220108, Minsk, Korzhenevskogo St., 16, r. 247tel. +375-29-854-66-51</p></bio><email xlink:type="simple">a.unik.gan@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>Соловьев</surname><given-names>Я. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Solovjov</surname><given-names>J. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соловьёв Я.А., к.т.н., доцент, заместитель директора филиала «Транзистор»</p><p>220108, г. Минск, ул. Корженевского, д. 16, к. 247</p></bio><bio xml:lang="en"><p>Solovjov Ja.А., Cand. of Sci., Associate Professor, Deputy Director of the “Transistor” Branch</p><p>220108, Minsk, Korzhenevskogo St., 16, r. 247</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>Жигулин</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhyhulin</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жигулин Д.В., начальник сектора ГЦ «Белмикроанализ»</p><p>220108, г. Минск, ул. Корженевского, д. 16, к. 247</p></bio><bio xml:lang="en"><p>Zhyhulin D.V., Head of the Sector of SC “Belmicroanalysis”</p><p>220108, Minsk, Korzhenevskogo St., 16, r. 247</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ОАО «ИНТЕГРАЛ» – управляющая компания холдинга «ИНТЕГРАЛ»</institution></aff><aff xml:lang="en"><institution>JSC “INTEGRAL” – “INTEGRAL” Holding Managing Company</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>13</day><month>06</month><year>2022</year></pub-date><volume>20</volume><issue>3</issue><fpage>13</fpage><lpage>19</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Юник А.Д., Соловьев Я.А., Жигулин Д.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Юник А.Д., Соловьев Я.А., Жигулин Д.В.</copyright-holder><copyright-holder xml:lang="en">Yunik A.D., Solovjov J.A., Zhyhulin D.V.</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/3362">https://doklady.bsuir.by/jour/article/view/3362</self-uri><abstract><p>Измерениями по методу длинной линии и вторичной ионной масс-спектроскопии установлено влияние температуры быстрого термического отжига на электрофизические свойства омического контакта металлизации Ti/Al/Ni с толщинами слоев 20/120/40 нм к гетероструктуре GaN/AlGaN с двумерным электронным газом на сапфировой подложке. Быстрый термический отжиг образцов проводили в среде азота при температуре в диапазоне от 850 до 900 °C в течение 60 с. Установлено, что на исходных образцах между металлизацией и двумерным электронным газом располагается высокоомный слой гетероструктуры толщиной порядка 25 нм, препятствующий формированию омического контакта. После быстрого термического отжига при температуре менее 862,5 °C происходит взаимодействие компонентов металлизации друг с другом и гетероструктурой, приводящее к уменьшению толщины высокоомного слоя гетероструктуры до 15–20 нм и нелинейности вольт-амперных характеристик. При температуре быстрого термического отжига от 862,5 до 875 °C толщина высокоомного слоя гетероструктуры уменьшается до нескольких единиц нанометров за счет взаимодейтвия компонентов металлизации Ti/Al/Ni с гетероструктурой, что способствует туннелированию носителей заряда и формированию качественного омического контакта с удельным сопротивлением порядка 1⸱10–4 Ом∙см2. При увеличении температуры быстрого термического отжига более 875 °C взаимодействие компонентов металлизации и гетероструктуры происходит по всей глубине, двумерный электронный газ деградирует, а вольт-амперная характеристика контакта становится нелинейной. Полученные результаты могут быть использованы в технологии создания изделий на основе GaN с двумерным электронным газом. </p></abstract><trans-abstract xml:lang="en"><p>Effect of rapid thermal annealing temperature on the electrophysical properties of the ohmic contact of Ti/Al/Ni metallization with layer thicknesses of 20/120/40 nm to the GaN/AlGaN heterostructure with a two-dimensional electron gas on a sapphire substrate has been discovered by transmission line measurement and secondary ion mass spectroscopy methods. Rapid thermal annealing of the samples was carried out in a nitrogen atmosphere at the temperature ranging from 850 to 900 °C for 60 s. It has been discovered that a high-resistance heterostructure layer with a thickness of about 25 nm is located on the initial samples between metallization and the two-dimensional electron gas, which prevents the formation of ohmic contact. After rapid thermal annealing at the temperature of less than 862,5 °C, the metallization components interact with each other and with the heterostructure, which leads to the decrease in the thickness of the high-resistance heterostructure layer to 15–20 nm and to the nonlinearity of the I – V characteristic. At rapid thermal annealing temperatures in the range from 862,5 to 875 °C, the thickness of the high-resistance heterostructure layer decreases to several nanometers due to the interaction of Ti/Al/Ni metallization components with the heterostructure, which promotes the tunneling effect of charge carriers and formation of a high-quality ohmic contact with a resistivity of about 1⸱10–4 Ohm∙cm2 . With an increase of the rapid thermal annealing temperature over 875 °C, the interaction of the metallization and heterostructure components occurs throughout the entire depth, the two-dimensional electron gas degrades, and the I – V characteristic of the contact becomes nonlinear. The results obtained can be used in the technology for creating GaN-based products with a two-dimensional electron gas.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нитрид галлия</kwd><kwd>гетероструктура</kwd><kwd>двумерный электронный газ</kwd><kwd>омический контакт</kwd><kwd>быстрый термический отжиг</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gallium nitride</kwd><kwd>heterostructure</kwd><kwd>two-dimensional electron gas</kwd><kwd>ohmic contact</kwd><kwd>rapid thermal annealing</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">Liu A.-C., Tu P.-T., Langpoklakpam C., Huang Y.-W., Chang Y.-T., Tzou A.-J., Hsu L.-H., Lin C.-H., Kuo H.-C., Chang E.Y. The evolution of manufacturing technology for gan electronic devices. Micromachines. 2021;12:737. 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