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Related Experiment Videos

Space and time-resolved laser-induced breakdown spectroscopy using charge-coupled device detection.

J M Vadillo1, M Milán, J J Laserna

  • 1Faculty of Sciences, Department of Analytical Chemistry, University of Málaga, E-29071, Málaga, Spain.

Analytical and Bioanalytical Chemistry
|April 1, 1996
PubMed
Summary
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This study presents time-resolved laser-induced plasma analysis of photovoltaic solar cells. It details atomic and ionic species distribution using a Nd:YAG laser and an intensified CCD detector for microanalysis.

Area of Science:

  • Materials Science
  • Plasma Physics
  • Spectroscopy

Background:

  • Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for elemental analysis.
  • Understanding laser-matter interactions is crucial for material characterization.
  • Photovoltaic solar cells require precise material analysis for performance optimization.

Purpose of the Study:

  • To conduct space and time-resolved studies of laser-induced plasmas in air at atmospheric pressure.
  • To investigate the distribution of atomic and ionic species within the plasma plume.
  • To demonstrate the capability of time-resolved imaging and spectroscopy for microanalysis of materials.

Main Methods:

  • Utilized a Nd:YAG laser (second harmonic, 532 nm) at high irradiance (18 x 10^12 W/cm^2).

Related Experiment Videos

  • Employed an intensified charge-coupled device (CCD) detector for time-resolved imaging and spectroscopy.
  • Performed microanalysis on photovoltaic solar cell samples with a focused beam (0.02 mm^2 surface area) in single-shot mode.

    • Main Results:

    • Successfully characterized atomic and ionic species distribution along the plasma plume using the CCD's 2D capability.
    • Assigned spectral lines to neutral and ionic states of atomic components within the sample.
    • Demonstrated the effect of time delay on spectral resolution and species decay characteristics.

    Conclusions:

    • Time-resolved LIBS with intensified CCD detection enables detailed spatial and temporal analysis of laser-induced plasmas.
    • This technique is effective for microanalysis of materials like photovoltaic solar cells.
    • The study provides insights into the dynamics of plasma species and their spectral signatures over time.