Nanostructure formation in silicon photovoltaic cells by Femtosecond Laser Pulses

Year: 2011

Authors: Taleb A.M., Al-Naimee K., Abdalah S., Meucci R., Arecchi F.T.

Autors Affiliation: Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq;
CNR – Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
High institute of Telecommunications and Post, Baghdad, Iraq

Abstract: The experimental evidence of the effect of femtosecond laser pulses on the spectral response of a Silicon photovoltaic cell is demonstrated and investigated. The response of this device is covering the visible to near infrared spectral region. The responsivity of the photovoltaic cell is enhanced from 0.18A/W (0.5A/W to 0.85 A/W) to 0.25A/W, this means that the conversion efficiency increases from about 9% to about 14% due to irradiation effect. All treatments and measurements have been done at room temperature. The observed enhancement is related to the appearing of nano-structured groves in the 700-900 nm range.

Conference title: 6th Japanese-Mediterranean Workshop on Applied Electromagnetic Engineering for Magnetic Superconducting and Nanomaterials
Place: Politehnica Univ Bucharest, Bucharest, ROMANIA

KeyWords: Experimental evidence; Femtosecond laser pulse; Irradiation effect; Nano-structured; Nanostructure formation; Near-infrared spectral regions; Responsivity; Room temperature; Silicon photovoltaic; Spectral response, Conversion efficiency; Electromagnetism; Irradiation; Magnetic materials; Nanostructures; Photoelectrochemical cells; Photovoltaic cells; Superconducting materials; Superconductivity; Ultrafast lasers; Ultrashort pulses, Photovoltaic effects
DOI: 10.4028/