Laser Induced Self-Organization of Nanohills/Nanowires in SiO2/Si Interface
A. Medvid a, P. Onufrijevs a, I. Dmitruk b and I. Pundyk b
a Riga Technical University, 14, Kalku Str., LV-1048, Riga, Latvia
b Kyiv National Taras Shevchenko University, Kyiv, Pr. Acad. Glushko, 2-1, Ukraine
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Received: 26 08 2007;
The aim of this work is to study optical properties of self-organized Si nanohills formed on the SiO2/Si interface after pulsed Nd:YAG laser irradiation. Nanohills on Si surface give strong photoluminescence in the visible range of spectrum, with a long wing in red portion. This property is explained by charge carrier quantum confinement in nanohills/nanowires.
DOI: 10.12693/APhysPolA.113.1067
PACS numbers: 75.47.Gk, 75.47.Lx, 07.57.Kp