<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">10.29235/1561-2430-2018-54-1-119-126</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-305</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 РЕЖИМОВ ОКИСЛЕНИЯ НА ХАРАКТЕРИСТИКИ МОП-КОНДЕНСАТОРОВ С НАНОКРИСТАЛЛАМИ Ge</article-title><trans-title-group xml:lang="en"><trans-title>THERMAL OXIDATION EFFECT ON ELECTRICAL PROPERTIES OF MOS CAPACITORS WITH EMBEDDED Ge NANOCRYSTALS</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>Новиков</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Novikau</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>старший преподаватель кафедры физической электроники и нанотехнологий, факультет радиофизики и компьютерных технологий</p></bio><bio xml:lang="en"><p>Senior Lecturer of the Physical Electronics and Nanotechnology Department, Faculty of Radiophysics and Computer Science</p></bio><email xlink:type="simple">novikaua@bsu.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>Наливайко</surname><given-names>О. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Nalivaiko</surname><given-names>O. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>заместитель главного технолога, холдинг «Интеграл»</p></bio><bio xml:lang="en"><p>Deputy Chief of Technology, Holding Company “Integral”</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>Гайдук</surname><given-names>П. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gaiduk</surname><given-names>P. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, доцент, профессор кафедры физической электроники и нанотехнологий, факультет радиофизики и компьютерных технологий</p></bio><bio xml:lang="en"><p>D. Sc. (Physics and Mathematics), Assistant Professor, Professor of the Physical Electronics and Nanotechnology Department, Faculty of Radiophysics and Computer Science</p></bio><email xlink:type="simple">gaiduk@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет, Минск</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian State University, Minsk</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>05</day><month>04</month><year>2018</year></pub-date><volume>54</volume><issue>1</issue><fpage>119</fpage><lpage>126</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Новиков А.Г., Наливайко О.Ю., Гайдук П.И., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Новиков А.Г., Наливайко О.Ю., Гайдук П.И.</copyright-holder><copyright-holder xml:lang="en">Novikau A.G., Nalivaiko O.Y., Gaiduk P.I.</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/305">https://vestifm.belnauka.by/jour/article/view/305</self-uri><abstract><p>Проведены исследования структуры и электрофизических характеристик МОП-конденсаторов, сформированных путем термического окисления в различных режимах тонких слоев SiGe сплавов на туннельном диэлектрике. Методом просвечивающей электронной микроскопии показано формирование нанокристаллов Ge и обнаружено влияние режимов окисления на структуру слоев SiO2 . С помощью измерений высокочастотных вольт-фарадных и вольт-амперных характеристик изучены электрические свойства МОП-структур и показано, что они обладают гистерезисом вольт-фарадных характеристик, а его величина существенно зависит от режима и атмосферы термообработок. Качество сформированных МОП-структур улучшается при использовании окисления в сухом кислороде с учетом оптимальной длительности окисления пленки SiGe, что подтверждается данными вольт-амперных характеристик. Полученные результаты обсуждаются с учетом возможного механизма удаления Ge из слоя SiO2 за счет низкотемпературного испарения монооксида германия (GeO).</p></abstract><trans-abstract xml:lang="en"><p>A 2D layer of spherical, crystalline Ge nanodots embedded in a SiO2 layer was formed by low pressure chemical vapor deposition combined with furnace oxidation and rapid thermal annealing. The samples were characterized structurally by using transmission electron microscopy in plan-view and cross-section geometries. It was found that the formation of highdensity Ge dots took place due to oxidation induced by the Ge segregation. Electrical properties were controlled by measuring C–V and I–V characteristics after the formation of MOS capacitors in different oxidation conditions and the ambient medium. A strong evidence of the charge storage effect on the crystalline Ge-nanodot layer was demonstrated by the hysteresis behavior of the high-frequency C–V curves. It is shown that dry oxidation followed by its reduction increases the hysteresis value compared to wet oxidation conditions. This hysteresis behavior is discussed taking into account the decrease in the Ge concentration and a possible effect of low temperature GeO evaporation is followed by wet oxidation.</p><p> </p></trans-abstract><kwd-group xml:lang="ru"><kwd>МОП-конденсаторы</kwd><kwd>нанокристаллы Ge</kwd><kwd>термическое окисление</kwd><kwd>сплав SiGe</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nonvolatile memory</kwd><kwd>nanocrystals</kwd><kwd>thermal oxidation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования проводились при финансовой поддержке Белорусского республиканского фон-да фундаментальных исследований в рамках проекта БРФФИ-РФФИ № Т16Р-167, а также ГПНИ «Фотоника, опто- и микроэлектроника» (задание № 3.2.03.01)</funding-statement><funding-statement xml:lang="en">We would like to acknowledge support from the Belarusian Republican Foundation for Fundamental Research (Project No. T16P-167) and the Belarusian Scientific Research Program “Photonics, Optics- and Microelectronics” (Project No. 3.2.03.01)</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">Structural and electrical properties of silicon dioxide layers with embedded germanium nanocrystals grown by molecular beam epitaxy / A. Kanjilal [et al.] // Appl. Phys. Lett. – 2003. – Vol. 82, № 8. – P. 1212–1214.</mixed-citation><mixed-citation xml:lang="en">Kanjilal A., Lundsgaard Hansen J., Gaiduk P., Nylandsted Larsen A., Cherkashin N., Claverie A., Normand P., Kapelanakis E., Skarlatos D., Tsoukalas D. Structural and electrical properties of silicon dioxide layers with embedded germanium nanocrystals grown by molecular beam epitaxy. Applied Physics Letters, 2003, vol. 82, no. 8, pp. 1212–1214. Doi: 10.1063/1.1555709</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Chemical vapor deposition of Ge nanocrystals on SiO2 / T. Baron [et al.] // Appl. Phys. Lett. – 2003. – Vol. 83, № 7. – P. 1444–1446.</mixed-citation><mixed-citation xml:lang="en">Baron T., Pelissier B., Perniola L., Mazen F., Hartmann J. M., Rolland G. Chemical vapor deposition of Ge nanocrystals on SiO2. Applied Physics Letters, 2003, vol. 83, no. 7, pp. 1444–1446. Doi: 10.1063/1.1604471</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Blue photo-and electroluminescence of silicon dioxide layers ion-implanted with group IV elements / L. Rebohle [et al.] // Appl. Phys. B. – 2000. – Vol. 71, №2. – P. 131–151.</mixed-citation><mixed-citation xml:lang="en">Rebohle L., Von Borany J., Fröb, H., Skorupa W. Blue photo-and electroluminescence of silicon dioxide layers ion-implanted with group IV elements. Applied Physics B, 2000, vol. 71, no. 2, pp. 131–151. Doi: 10.1007/pl00006966</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Effect of annealing environment on the memory properties of thin oxides with embedded Si nanocrystals obtained by low-energy ion-beam synthesis / P. Normand [et al.] // Appl. Phys. Lett. – 2003. – Vol. 83, № 1. – P. 168–170.</mixed-citation><mixed-citation xml:lang="en">Normand P., Kapetanakis E., Dimitrakis P., and Tsoukalas D. Effect of annealing environment on the memory properties of thin oxides with embedded Si nanocrystals obtained by low-energy ion-beam synthesis. Applied Physics Lettetrs, 2003, vol. 83, no. 1, pp. 168–170. Doi: 10.1063/1.1588378</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Effects of Ge concentration on SiGe oxidation behavior / H. K. Liou [et al.] // Appl. Phys. Lett. – 1991. – Vol. 59, № 10. – P. 1200.</mixed-citation><mixed-citation xml:lang="en">Liou H. K., Mei P., Gennser U., Yang E. S. Effects of Ge concentration on SiGe oxidation behavior. Applied Physics Letters, 1991, vol. 59, no. 10, pp. 1200–1202. Doi:10.1063/1.105502</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Oxidation rate enhancement of SiGe epitaxial ﬁlms oxidized in dry ambient / M. Spadafora [et al.] // Appl. Phys. Lett. – 2003. – Vol. 83, № 18. – P. 3713-3715.</mixed-citation><mixed-citation xml:lang="en">Spadafora M., Privitera G., Terrasi A., Scalese S., Bongiorno C., Carnera A., Di Marino M., Napolitani E. Oxidation rate enhancement of SiGe epitaxial ﬁlms oxidized in dry ambient. Applied Physics Letters, 2003, vol. 83, no 18, pp. 3713-3715. Doi: 10.1063/1.1622439</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Choi, W. K. Rapid thermal oxidation of radio frequency sputtered polycrystalline silicon germanium ﬁlms / W. K. Choi,</mixed-citation><mixed-citation xml:lang="en">Choi W. K., Natarajan A., Bera L. K., Wee A. T. S., Liu Y. J. Rapid thermal oxidation of radio frequency sputtered polycrystalline silicon germanium ﬁlms. Journal of Applied Physics, 2002, vol. 91, no. 4, pp. 2443–2448. Doi: 10.1063/1.1431435</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">A. Natarajan, L. K. Bera // J. Appl. Phys. – 2002. – Vol. 91, № 4. – P. 2443–2448.</mixed-citation><mixed-citation xml:lang="en">Novikau A. G., Ratkevich S. V., Gaiduk P. I., Komarov F. F. Oxidation induced Ge segregation in SiGe alloys. Doklady Natsional’noi akademii nauk Belarusi = Doklady of the National Academy of Sciences of Belarus, 2009, vol. 53, no. 2, pp. 52– 56 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Сегрегация Ge в SiGe сплавах при окислении / А. Г. Новиков [и др.] // Докл. Нац. акад. наук Беларуси. – 2009. – Т. 53, № 2. – С. 52–56.</mixed-citation><mixed-citation xml:lang="en">Novikau A., Gaiduk P. Germanium segregation in CVD grown SiGe layers. Open Physics, 2010, vol. 8, no. 1, pp. 57–60. Doi: 10.2478/s11534-009-0082-0</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Novikau, A. Germanium segregation in CVD grown SiGe layers / A. Novikau, P. Gaiduk // Open Physics. – 2010. – Vol. 8, № 1. – P. 57–60.</mixed-citation><mixed-citation xml:lang="en">Sze S. M. Physics of semiconductor devices. New York, John Wiley &amp; Sons, 1969. 812 p.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Зи, C. Физика полупроводниковых приборов: в 2 кн.: пер. с англ. / С. Зи. – М.: Мир, 1984. – 2 кн.</mixed-citation><mixed-citation xml:lang="en">Samsonov G. V. Physical chemistry properties of oxides. Мoscow, Metallurgiya Publ., 1978. 472 p. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Самсонов, Г. В. Физико-химические свойства окислов / Г. В. Самсонов. – М.: Металлургия, 1978. – 472 с.</mixed-citation><mixed-citation xml:lang="en">Shklyaev A. A., Ichikawa M. Visible photoluminescence of Ge dots embedded in Si/SiO2 matrices. Applied Physics Letters, 2002, vol. 80, no. 8, pp. 1432–1434. Doi: 10.1063/1.1451986</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Shklyaev, A. A. Visible photoluminescence of Ge dots embedded in Si/SiO2 matrices / A. A. Shklyaev, M. Ichikawa // Appl. Phys. Lett. – 2002. – Vol. 80, № 8. – P. 1432–1434.</mixed-citation><mixed-citation xml:lang="en">Gaiduk A. P., Larsen A. N., Sheval’e Zh., Gaiduk P. I. Decomposition of supersaturated SiO2(Ge) alloys after thermal annealing. Perspektivnye Materialy, 2007, no 2, pp. 29–35 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Гайдук, А. П. Распад пересыщенных сплавов SiO2(Ge) при термической обработке / А. П. Гайдук [и др.] // Перспективные материалы. – 2007. – № 2. – С. 29–35.</mixed-citation><mixed-citation xml:lang="en">Antonova I. V., Gulyaev M. B., Yanovitskaya Z. Sh., Volodin V. A., Marin D. V., Efremov M. D., Goldstein Y., Jedrzejewski J. Electrical properties and photoluminescence of SiOx layers with Si nanocrystals in relation to the SiOx composition. Semiconductors, 2006, vol. 40, no. 10, pp. 1198–1203. Doi: 10.1134/s1063782606100137</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Сопоставление электрических свойств и фотолюминесценции в зависимости от состава слоев SiOx, содержащих нанокристаллы кремния / И. В. Антонова [и др.] // Физика и техника полупроводников. – 2006. – Т. 40, вып. 10. – С. 1229–1235.</mixed-citation><mixed-citation xml:lang="en">Assaf H., Ntsoenzok E., Ruault М. О., Kaitasov О. Novel low-k dielectric obtained by Xenon implantation in SiO2. Solid State Phenomena, 2005, vol. 108–109, pp. 291–296. Doi: 10.4028/www.scientiﬁc.net/ssp.108-109.291</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Novel low-k dielectric obtained by Xenon implantation in SiO2 / H. Assaf [et al.] // Solid State Phenomena. – 2005. – № 291. – P. 108–109.</mixed-citation><mixed-citation xml:lang="en">Novel low-k dielectric obtained by Xenon implantation in SiO2 / H. Assaf [et al.] // Solid State Phenomena. – 2005. – № 291. – P. 108–109.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
