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The Influence of the Formation and Storage Conditions of Silicon Nanoparticles Obtained by Laser-Induced Pyrolysis of Monosilane on the Nature and Properties of Defectsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 14 августа 2017 г.
- Авторы: Minnekhanov A.A., Konstantinovaa E.A., Pustovoid V.I., Kashkarov P.K.
- Журнал: Technical Physics Letters
- Том: 43
- Номер: 5
- Год издания: 2017
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 424
- Последняя страница: 427
- DOI: 10.1134/S1063785017050078
- Аннотация: Silicon nanoparticles (NPs) obtained by laserinduced pyrolysis of monosilane were investigated for the first time by the method of EPR spectroscopy so as to study the variation of recombination centers in the process of sample storage. Both original NPs and ones etched in an aqueous solution of HF and HNO3 acid, followed by annealing at 80C for 60 min, which leads to stable high-intensity photoluminescence, were studied. The results of the experiments and the subsequent computer processing showed that, in all the presented samples, there are three types of defects—Pb0, Pb1, and D-centers. The role of defects as quenching centers of luminescence has been confirmed during comparative studies of samples after 1 year of storage. It has been established that the storage of etched NPs leads to passivation of dangling bonds with oxygen, resulting in a significant reduction of defect concentration with time. The obtained results are of paramount importance for practical applications of silicon NPs obtained by the above method, because a possibility is opened up for synthesis of structures with low concentrations of defects and stable radiative characteristics.
- Добавил в систему: Константинова Елизавета Александровна