The technique of obtaining Ag/Por-Si composite material with homogeneously distributed silver nanoparticles over the surface of porous silicon by one cycle of electrochemical treatment of single-crystalline silicon. The effect is achieved by using an electrolyte to produce porous silicon with a special composition containing silver ions. During the electrochemical anode treatment of single-crystalline silicon in Ag-containing electrolyte a layer of porous silicon and silver islets are formed on the sample surface simultaneously. It is shown that the controlling the conditions of electrochemical processing provide an opportunity to form homogeneously distributed on the surface silver nanoparticles with a narrow-size distribution.
The features of a two-stage synthesis of structured microsystems based on zinc oxide nanorods using ultrasonic spray pyrolysis and a low-temperature hydrothermal method with suppression of nucleation in the bulk of the solution are presented. It is shown that the use of two-stage synthesis provides control over the size and aspect ratio of nanorods. It is proposed to control the concentration of intrinsic surface defects by measuring the photocurrent with irradiation through narrow-band interference light filters.
Рассматриваются перспективы создания солнечных элементов на основе оксидов металлов с объемным гетеропереходом, при этом ZnO был сформирован методом гидротермального синтеза. Представлены результаты синтеза наностержней оксида цинка на различных затравочных слоях. Отмечена значительная роль операции формирования зародышевого слоя. Показана возможность управления структурой массивов наностержней посредством использования поверхностно-активного вещества. Полученные ограненные наностержни перспективны для получения солнечных элементов нового поколения. DOI: 10.21883/FTP.2017.01.8356
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