Enhancement in optical absorption of silicon fibrous nanostructure produced using femtosecond laser ablation
- Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3 (Canada)
- Department of Aerospace Engineering, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3 (Canada)
Fibrous nanostructures are proposed for the application of solar cell. Irradiation of silicon surface with a few hundred femtosecond laser pulses of fluence 13 kJ/m{sup 2} at 13 MHz pulse frequency in air atmosphere results in the formation of fibrous nanostructure layer on the treated surface that leads to a significant decrease in the reflection of visible radiation. For the visible wavelength, the decreased reflection is a result of the nature of the nanostructure. The Raman peak shift in the irradiated surface confirms that the surface is changed to amorphous silicon due to fibrous nanostructure formation.
- OSTI ID:
- 21294203
- Journal Information:
- Applied Physics Letters, Vol. 95, Issue 3; Other Information: DOI: 10.1063/1.3168499; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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