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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">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-2430-2024-60-3-252-262</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-800</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>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Влияние гамма-облучения на обратные вольт-амперные характеристики кремниевых фотоумножителей</article-title><trans-title-group xml:lang="en"><trans-title>ski S. V. Influence of gamma irradiation on the reverse current-voltage characteristics of silicon photomultipliers</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>Огородников</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Aharodnikau</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Огородников Дмитрий Александрович – научный сотрудник</p><p>ул. П. Бровки, 19, 220072, Минск</p></bio><bio xml:lang="en"><p>Dzmitryi A. Aharodnikau – Researcher</p><p>19, P. Brovka Str., 220072, Minsk</p></bio><email xlink:type="simple">dimaogorodnikov@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>Ластовский</surname><given-names>С. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Lastovskii</surname><given-names>S. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ластовский Станислав Брониславович – кандидат физико-математических наук, ведущий научный сотрудник</p><p>ул. П. Бровки, 19, 220072, Минск</p></bio><bio xml:lang="en"><p>Stanislav B. Lastovskii – Ph. D. (Physics and Mathematics), Leading Researcher</p><p>19, P. Brovka Str., 220072, Minsk</p></bio><email xlink:type="simple">lastov@physics.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>Богатырев</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogatyrev</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Богатырев Юрий Владимирович – доктор технических наук, главный научный сотрудник</p><p>ул. П. Бровки, 19, 220072, Минск</p></bio><bio xml:lang="en"><p>Yuri V. Bogatyrev – Dr. Sc. (Engineering), Chief Researcher</p><p>19, P. Brovka Str., 220072, Minsk</p></bio><email xlink:type="simple">bogat@physics.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>Лемешевская</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Lemeshevskaya</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лемешевская Алла Михайловна – заместитель начальника отдела, Филиал НТЦ «Белмикросистемы»</p><p>ул. Казинца, 121А, 220108, Минск</p></bio><bio xml:lang="en"><p>Alla M. Lemeshevskaya – Department Deputy Manager, Affiliate R&amp;D Center “Belmicrosystems”</p><p>121A, Kazinets Str., 220108, Minsk</p></bio><email xlink:type="simple">lem55@mail.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>Цымбал</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsymbal</surname><given-names>U. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цымбал Владимир Сергеевич – главный конструктор направления, Филиал НТЦ «Белмикросистемы»</p><p>ул. Казинца, 121А, 220108, Минск</p></bio><bio xml:lang="en"><p>Uladzimir S. Tsymbal – Chief Designer of Concept, Affiliate R&amp;D Center “Belmicrosystems”</p><p>121А, Kazinets Str., 220108, Minsk</p><p> </p></bio><email xlink:type="simple">VTsymbal@integral.by</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>Шпаковский</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shpakovski</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шпаковский Сергей Васильевич – начальник отделения «Т», Филиал НТЦ «Белмикросистемы»</p><p>ул. Казинца, 121А, г. Минск, 220108</p><p> </p></bio><bio xml:lang="en"><p>Sergey V. Shpakovski – Head of the Department “Т”, Affiliate R&amp;D Center “Belmicrosystems”</p><p>121А, Kazinets Str., 220108, Minsk</p></bio><email xlink:type="simple">SShpakovskiy@integral.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-практический центр Национальной академии наук Беларуси по материаловедению</institution></aff><aff xml:lang="en"><institution>Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ОАО «ИНТЕГРАЛ» – Управляющая компания холдинга «ИНТЕГРАЛ»</institution></aff><aff xml:lang="en"><institution>JSC “INTEGRAL” – manager holding company “INTEGRAL”</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>06</day><month>10</month><year>2024</year></pub-date><volume>60</volume><issue>3</issue><fpage>252</fpage><lpage>262</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Огородников Д.А., Ластовский С.Б., Богатырев Ю.В., Лемешевская А.М., Цымбал В.С., Шпаковский С.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Огородников Д.А., Ластовский С.Б., Богатырев Ю.В., Лемешевская А.М., Цымбал В.С., Шпаковский С.В.</copyright-holder><copyright-holder xml:lang="en">Aharodnikau D.A., Lastovskii S.B., Bogatyrev Y.V., Lemeshevskaya A.M., Tsymbal U.S., Shpakovski S.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://vestifm.belnauka.by/jour/article/view/800">https://vestifm.belnauka.by/jour/article/view/800</self-uri><abstract><p>Исследовано влияние гамма-квантов Со60 на обратную вольт-амперную характеристику (ВАХ) кремниевых фотоэлектронных умножителей (SiФЭУ) с 1004 ячейками, представляющими собой оптически изолированные друг от друга n+ –p–p+ -структуры. Оптическая изоляция ячеек осуществлялась канавками, которые после пассивации стенок слоями SiО2 и Si3N4 заполнялись вольфрамом. Исследовались SiФЭУ двух вариантов конструктивного исполнения. В первом варианте (ВI) вывод металла канавки электрически соединялся через гасящий поликремниевый резистор с n+-областью ячейки, во втором (BII) – с p+-областью. Напряжение пробоя исследуемых SiФЭУ составляло Ubr = 34 ± 1,0 В. Образцы облучались в режиме лавинного пробоя (активный электрический режим) и при обратном смещении Ub = 0 В (пассивный режим). Установлено, что при значении поглощенной дозы D = 106 рад темновой ток возрастает в 6–7 раз у SiФЭУ (BI) и (BII), облучаемых в пассивном режиме, и в 15–16 раз у SiФЭУ (BII), облучаемых в активном режиме. Для SiФЭУ (ВI), облучаемых в режиме лавинного пробоя, значение темнового тока возрастает в 104 раз при D = 105 рад. Показано, что радиационная деградация темнового тока исследуемых SiФЭУ вызвана увеличением генерационной и главным образом поверхностной составляющих в результате накопления положительного заряда в изолирующем слое разделительных канавок.</p></abstract><trans-abstract xml:lang="en"><p>The study investigated the effect of Co60 gamma-quanta on the reverse current-voltage characteristic (IV) of silicon photomultiplier (SiPMs) with 1004 cells, which themselves were optically isolated from each other n+ –p–p+ -structures. The cells were optically isolated from each other by trenches filled with tungsten after passivation of the walls with SiO2 and Si3N4 layers. Two variants of structural design of SiPMs were studied. Two variants were tested for the trench metal connection in the SiPMs: variant BI connected the trench metal to the n+-region of the cell through a quenching polysilicon resistor, while variant BII connected it to the p+-region. The breakdown voltage of the investigated SiPMs was Ubr = 34 ± 1.0 V. The samples were irradiated in both the active electrical mode (avalanche breakdown mode) and the passive mode (reverse bias Ub = 0 V). It was discovered, that at dose of D = 106 rad, the dark current for SiPM (BI) and (BII) increased by 6–7 times when irradiated in passive mode and by 15–16 times for SiPM (BII) when irradiated in active mode. For SiPM (BI) irradiated in the avalanche breakdown mode, the dark current increased by 104 times at D = 105 rad. The research demonstrates that the radiation-induced degradation of the dark current in the SiPMs under study is due to an increase in the generation and, primarily, surface components. This is a result of the accumulation of positive charge in the insulating layer of the separating trenches.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>кремниевые фотоумножители</kwd><kwd>вольт-амперная характеристика</kwd><kwd>лавинный пробой</kwd><kwd>гамма-излучение</kwd><kwd>радиационная стойкость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>silicon photomultipliers</kwd><kwd>volt-ampere characteristic</kwd><kwd>avalanche breakdown</kwd><kwd>gamma radiation</kwd><kwd>radiation hardness</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Белорусского республиканского фонда фундаментальных исследований (грант № Т23МЭ-024).</funding-statement><funding-statement xml:lang="en">This work was supported by Belarusian Republican Foundation for Fundamental Research (grant no. 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