Vadillo J M, Palanco S, Romero M D, Laserna J J
Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, E-29071, Málaga, Spain.
Anal Bioanal Chem. 1996 Jul;355(7-8):909-12. doi: 10.1007/s0021663550909.
The applicability of laser-induced breakdown spectrometry (LIBS) for surface analysis is presented in terms of its lateral and depth resolution. A pulsed N(2) laser at 337.1 nm (3.65 J/cm(2)) was used to irradiate solar cells employed for photovoltaic energy production. Laser produced plasmas were collected and detected using a charge-coupled device. An experimental device developed in the laboratory permits an exact synchronization of sample positioning using an XY motorized system with laser pulses. Multielement analysis with lateral resolution of up to 30 microm is feasible with the present system. Three-dimensional capabilities of the system are used for studies on the distribution of carbon impurities at the surface of the solar cells.
