ntvНаучно-технический вестник информационных технологий, механики и оптикиScientific and Technical Journal of Information Technologies, Mechanics and Optics2226-14942500-0373Университет ИТМО10.17586/2226-1494-2022-22-6-1078-1084ntv-304Research ArticleНОВЫЕ МАТЕРИАЛЫ И НАНОТЕХНОЛОГИИMATERIAL SCIENCE AND NANOTECHNOLOGIESЛюминесцентный метод исследования роста квантовых точек AgInS2Luminescence technique for studying the growth of AgInS2 quantum dotshttps://orcid.org/0000-0003-3522-4701АхмадА. К.AhmadA. K.

Ахмад Ахмад Карнал – PhD, профессор

Багдад, 10072

sc 56756921400

Ahmad K. Ahmad – PhD, Full Professor

Baghdad, 10072

sc 56756921400

ahmad.ahmad@nahrainuniv.edu.iqhttps://orcid.org/0000-0003-3646-4790МохаммедА. Х.MohammedA. H.

Мохаммед Аммар Хуссейн – PhD, преподаватель

Багдад, 10072

sc 57191197465

Ammar H. Mohammed – PhD, Lecturer

Baghdad, 10072

sc 57191197465

ammarhussen659@gmail.comhttps://orcid.org/0000-0001-9336-6885СкапцовА. А.SkaptsovA. A.

Скапцов Александр Александрович – кандидат физико-математических наук, доцент

Саратов, 410012

Alexander A. Skaptsov – PhD (Physics & Mathematics), Associate Professor

Saratov, 410012

sc 22951907500

skaptsov@yandex.ruАль-Нарейн Юниверсити, Инженерный колледжИракAl-Nahrain University, College of EngineeringIraqАль-Нарейн ЮниверситиИракAl-Nahrain University, College of ScienceIraqСаратовский национальный исследовательский государственный университет имени Н.Г. ЧернышевскогоРоссияSaratov State UniversityRussian Federation20221712202422610781084Copyright © Ахмад А.К., Мохаммед А.Х., Скапцов А.А., 20242024Ахмад А.К., Мохаммед А.Х., Скапцов А.А.Ahmad A.K., Mohammed A.H., Skaptsov A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://ntv.elpub.ru/jour/article/view/304

Методы получения наночастиц хорошо известны, однако стабильно повторяемое получение наночастиц с одинаковыми специфическими характеристиками, позволяющими их использовать в качестве биосенсоров, в настоящее время представляет собой проблему. Проблема многих методов заключается в получении результатов с хорошей воспроизводимостью оптических свойств и их стабильностью во времени. В работе получены наночастицы AgInS2 в виде коллоидных квантовых точек различными методами. Выполнен анализ процесса синтеза, который влияет на оптические характеристики наночастиц, их размер, состав, спектры поглощения и люминесценции. Для получения нанокристаллических частиц при изготовлении AgInS2 применен капиллярный электрофорез с модификациями растворителя и температуры. Обнаружено, что накопление Ag в решетке InS способствует деформации, которая приводит к структурным дефектам и, следовательно, к смещению спектральной полосы люминесценции. Исследованы характеристики смешанных наночастиц AgInS2 при различных вариациях технологии изготовления, стабильности поверхности и включения металлических примесей. Показано, что в спектрах люминесценции наночастиц AgxIn1–xS2 доминирует одна полоса. Исследована зависимость между стехиометрическим соотношением, амплитудой люминесценции, шириной линии и максимальной длиной волны. Средний размер полученных нанокристаллов определен с использованием метода динамического светорассеяния. Расчетный размер наночастиц составил в среднем 3–3,5 нм.

Although nanoparticle production techniques are well-known, getting nanoparticles with specific characteristics that enable their application as biosensors is an entirely other problem. Many issues occur as a result of employing the method for producing repeatable and time-stable nanostructures. We created AgInS2 nanoparticles as colloidal quantum dots in a variety of methods to test the efficiency of the synthesis process on the optical characteristics of the nanoparticles, as well as their size, composition, absorption, and luminescence spectra. The capillary electrophoresis (CE) approach for AgInS2 production was employed, with modifications in solvent and temperature, to get nanocrystal (NC) particles. The researchers discovered that Ag accumulation in the InS lattice promotes deformation which leads to structural defects. Consequently, the direction of a nanoparticle light band may now be changed. The features of mixed AgInS2 nanoparticles have been examined with respect to different fabrication procedures, surface stability, and metal impurity incorporation. One band dominates in the luminescence spectra of AgxIn1–xS2 nanoparticles. The relationship between the stoichiometric ratio, luminescence amplitude, line width, and the maximum wavelength is investigated. The average size of the received nanocrystals was determined using dynamic light scattering studies. The computed nanoparticle diameter range has an average particle size of 3–3.5 nm.

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The authors declare that there are no conflicts of interest present.