Defect Formation of Light-Emitting Particles during the Synthesis of a Hierarchical Porous Surface of ZnO/SiO 2 /Si Structures

Engineering Proceedings

article

Rashid Zhapakov¹  Mykhail Begunov¹  Tatyana Seredavina¹  Danatbek Murzalinov¹  Abay Serikkanov¹  Elena Dmitriyeva¹  Sultan Zhantuarov¹  Sayara Ibraimova¹ 

[1] Institute of Physics and Technology, Satbayev University

关键词: ZnO;    photoluminescence;    exciton;    oxygen vacancies;    porous silicon;   

DOI  :  10.3390/ECP2023-14645

来源: mdpi

【 摘 要 】

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.

【 授权许可】

Unknown