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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">mateltech</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Материалы электронной техники</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1609-3577</issn><issn pub-type="epub">2413-6387</issn><publisher><publisher-name>MISIS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/1609-3577-2017-1-60-66</article-id><article-id custom-type="elpub" pub-id-type="custom">mateltech-247</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>Физические свойства и методы исследования</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICAL CHARACTERISTICS AND THEIR STUDY</subject></subj-group></article-categories><title-group><article-title>РАЗДЕЛЬНОЕ ОПРЕДЕЛЕНИЕ ФОТОЭЛЕКТРИЧЕСКИХ ПАРАМЕТРОВ БАЗОВОЙ ОБЛАСТИ КРЕМНИЕВЫХ СТРУКТУР P+—N(P)—N+–ТИПА БЕСКОНТАКТНЫМ МЕТОДОМ ПО ОТНОШЕНИЯМ КОЭФФИЦИЕНТОВ СОБИРАНИЯ ПРИ ДВУХ ДЛИНАХ ВОЛН</article-title><trans-title-group xml:lang="en"><trans-title>SEPARATE DETERMINATION OF THE PHOTOELECTRIC PARAMETERS OF THE BASE REGION OF N+−P(N)−P+ SILICON STRUCTURE BY NONCONTACT METHOD BASED ON QUANTUM EFﬁ CIENCY RELATION MEASUREMENTS AT TWO WAVELENGTHS</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>Кошелев</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Koshelev</surname><given-names>O. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кошелев Олег Григорьевич — старший научный сотрудник.</p><p>Ленинские горы, д. 1, Москва, 119991.</p></bio><bio xml:lang="en"><p>1 Leninskie Gory, Moscow 119991.</p></bio><email xlink:type="simple">scon282@phys.msu.ru</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>Васильев</surname><given-names>Н. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasiljev</surname><given-names>N. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Васильев Никита Геннадиевич — студент 5 курса.</p><p>Ленинские горы, д. 1, Москва, 119991.</p></bio><bio xml:lang="en"><p>1 Leninskie Gory, Moscow 119991.</p></bio><email xlink:type="simple">Fake@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет им. М. В. Ломоносова.</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University.</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>22</day><month>05</month><year>2018</year></pub-date><volume>20</volume><issue>1</issue><fpage>60</fpage><lpage>66</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кошелев О.Г., Васильев Н.Г., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Кошелев О.Г., Васильев Н.Г.</copyright-holder><copyright-holder xml:lang="en">Koshelev O.G., Vasiljev N.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://met.misis.ru/jour/article/view/247">https://met.misis.ru/jour/article/view/247</self-uri><abstract><p>Рассмотрен бесконтактный метод определения рекомбинационных параметров локальных участков p(n)−слоя кремниевых структур n+—p(n)—p+−типа. Метод основан на локальном освещении исследуемой структуры двумя различно поглощаемыми лучами света. Оба луча освещают одновременно сначала одну сторону локальной области этой структуры, а затем противоположную. Интенсивности лучей света модулируются так, что суммарная переменная фотоЭДС обращается в 0. В этом случае осуществляется режим тока короткого замыкания для его переменной составляющей. В результате неосвещаемые участки структуры не шунтируют освещаемый участок. При этих условиях измеряют отношения интенсивностей лучей света. Вычислены номограммы для раздельного определения времени жизни неравновесных носителей заряда в освещаемой части p(n)−области и скорости их поверхностной рекомбинации на основании измеряемых отношений интенсивностей. Расчеты проведены для случая низкого уровня инжекции в одномерном приближении Номограммы вычислены для длин волн 1064 и 808 нм при различных толщинах n+—p(n)—p+−структур и частотах модуляции. Было обнаружено, что номограммы практически не зависят от частоты модуляции, еcли время жизни неравновесных носителей заряда меньше периода модуляции. Установлено, что номограммы существенно смещаются и изменяются по форме для тонких структур, если время диффузии неравновесных носителей заряда от тыльной стороны структуры до ее лицевой стороны становится меньше их времени жизни. В этом случае номограммы могут быть использованы лишь для определения скорости поверхностной рекомбинации на тыльной стороне структуры.</p></abstract><trans-abstract xml:lang="en"><p>A noncontact method for the determination of recombination parameters of p(n) layer local ranges of silicon n+−p(n)−p+ structures is considered. The method is based on local illumination of the investigated structure by two different absorbed light beams. Initially both beams illuminate simultaneously one side of the local range of this structure and then another side. The intensities оf the light beams are modulated at one frequency so the alternative photo−voltage becomes equal to zero. In this case the short current regime is established for its alternating component. As a consequence the nonilluminated parts of the structure do not shunt its illuminated part. The ratios of the light beam intensities are measured under these conditions. In this work we calculated nomograms for separate determination of the nonequilibrium charge carrier lifetime of the illuminated p(n) local space and its surface recombination velocity using the measured intensity ratios. The calculations were performed at low injection level for one dimensional case. The nomograms were calculated at wave lengths of 1064 and 808 nm for various thicknesses of the n+−p(n)−p+ structures and various modulation frequencies. It was found that the nomograms almost do not depend on the modulation frequency if the live time of the nonequilibrium charge carriers is less than the modulation period. Furthermore, we observed that the nomograms shift substantially and change their shape for thin structures if the diffusion time of nonquilibrium charge carriers from the rear side of the structure to its face side becomes less than their lifetime. In this case the nomograms may be only used for the determination of the surface recombination velocity of the nonquilibrium charge carriers at the rear side of the structure.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>кремний</kwd><kwd>неравновесные носители заряда</kwd><kwd>время жизни</kwd><kwd>скорость поверхностной рекомбинации</kwd><kwd>солнечные элементы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>silicon</kwd><kwd>nonequilibrium charge carriers</kwd><kwd>lifetime</kwd><kwd>surface recombination rate</kwd><kwd>solar cells</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">32th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2016). − Munich, 2016. 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