Defect Formation of Light-Emitting Particles during the Synthesis of a Hierarchical Porous Surface of ZnO/SiO2/Si Structures †
Zhapakov R. Begunov M. Seredavina T. Murzalinov D. Serikkanov A. Dmitriyeva E. Zhantuarov S. Ibraimova S.
2023Multidisciplinary Digital Publishing Institute (MDPI)
Engineering Proceedings
2023#37Issue 1
The formation of structures of different sizes on the surface of a single sample and the study of the mechanisms of their excitations and energy transitions is a promising area of research. ZnO/SiO2/Si heterostructures were formed by two-stage electrochemical etching of silicon wafers and synthesizing zinc oxide nanoparticles using sol-gel technology. By scanning electron and atomic force microscopies, various pores and clusters were identified. The presence of five levels of surface hierarchy provided the synthesis of light-emitting particles with different properties. Light emission mechanisms are associated with the recombination of excitons and the hyperfine structure of charged particles trapped on oxygen vacancy.
exciton , oxygen vacancies , photoluminescence , porous silicon , ZnO
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Institute of Physics and Technology, Satbayev University, Almaty, 050013, Kazakhstan
Institute of Physics and Technology
10 лет помогаем публиковать статьи Международный издатель
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