Defect Formation of Light-Emitting Particles during the Synthesis of a Hierarchical Porous Surface of ZnO/SiO2/Si Structures

• DOI: 10.3390/ecp2023-14645
• Publication Date: 2023-07-12T04:49:11Z
• Authors: Rashid Zhapakov; Mykhail Begunov; Tatyana Seredavina; Danatbek Murzalinov; Abay Serikkanov; Elena Dmitriyeva; Sultan Zhantuarov; Sayara Ibraimova
• Keywords: Porous Silicon; Surface Photovoltage; Light emission

The formation of structures different sizes on the surface a single sample and study mechanisms their excitations energy transitions is promising area research. ZnO/SiO2/Si heterostructures were formed by two-stage electrochemical etching silicon wafers synthesizing zinc oxide nanoparticles using sol-gel technology. By scanning electron atomic force microscopies, various pores clusters identified. presence five levels hierarchy provided synthesis light-emitting particles with properties. Light emission are associated recombination excitons hyperfine structure charged trapped oxygen vacancy.