Abstract
Microstructures have been formed on single-crystal silicon substrates of different crystallographic orientations, (111) and (100), under “soft” hydrothermal conditions. Well-faceted ZnO microcrystallites were obtained on the Si(111) surface, whereas the Si(100) substrate surface was covered with willemite (Zn2SiO4) crystallites, and zinc oxide microcrystallites were observed in only a narrow region ∼1 mm wide over the substrate edge. These results indicate clear influence of the crystallographic orientation of silicon substrates on the processes of crystal formation and microstructure growth under conditions of low-temperature hydrothermal synthesis. Low-threshold effective lasing has been detected on well-faceted zinc oxide crystallites under optical excitation.
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ACKNOWLEDGMENTS
We are grateful to V.G. Galstyan for his help in SEM imaging.
FUNDING
This study was supported in part by the Federal Agency for Scientific Organizations (agreement no. 007-ГЗ/Ч3363/26).
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Translated by A. Grudtsov
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Li, L.E., Senina, V.A., Goryunov, G.E. et al. ZnO@Si(100) and ZnO@Si(111): Hydrothermal Synthesis, Morphology, and Lasing Characteristics. Crystallogr. Rep. 64, 419–421 (2019). https://doi.org/10.1134/S1063774519020196
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DOI: https://doi.org/10.1134/S1063774519020196