Title :
Self-assembled nanostructuring of a-Si:H films with ultrashort light pulses
Author :
Gecevicius, Mindaugas ; Beresna, Martynas ; Kazanskii, Andrey G. ; Kazansky, Peter G.
Author_Institution :
Optoelectron. Res. Centre, Univ. of Southampton, Southampton, UK
Abstract :
For several decades, hydrogenated amorphous silicon (a-Si:H) has been playing a significant role in the world´s production of photovoltaic modules. In this work, we investigate different types of modifications induced by a femtosecond laser in a-Si:H thin films. We demonstrate that several distinctive modification regimes with peculiar optical properties can be obtained in a narrow range of the laser pulse energies.
Keywords :
amorphous semiconductors; elemental semiconductors; high-speed optical techniques; hydrogen; hydrogenation; laser beam effects; laser materials processing; nanofabrication; nanostructured materials; self-assembly; semiconductor growth; semiconductor thin films; silicon; Si:H; femtosecond laser modifications; hydrogenated amorphous silicon; laser pulse energies; peculiar optical properties; photovoltaic modules; self-assembled nanostructuring; thin films; ultrashort light pulses; Amorphous silicon; Films; Lasers; Measurement by laser beam; Microscopy; Pulsed laser deposition; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4799-0593-5
DOI :
10.1109/CLEOE-IQEC.2013.6801591
