Application of femtosecond laser ablation inductively coupled plasma mass spectrometry for quantitative analysis of thin Cu(In,Ga)Se2 solar cell films
Autor
Lee, Seokhee
Gonzalez, Jhanis J.
Yoo, Jong H.
Chirinos, José
Russo, Richard E.
Jeong, Sungho
Institución
Resumen
Thiswork reports that the composition of Cu(In,Ga)Se2 (CIGS) thin solar cell films can be quantitatively predicted
with high accuracy and precision by femtosecond laser ablation-inductively coupled plasma-mass spectrometry
(fs-LA-ICP-MS). It is demonstrated that the results are strongly influenced by sampling conditions during fs-laser
beam (λ = 1030 nm, τ = 450 fs) scanning on the CIGS surface. The fs-LA-ICP-MS signals measured at optimal
sampling conditions generally provide a straight line calibration with respect to the reference concentrations
measured by inductively coupled plasma optical emission spectroscopy (ICP-OES). The concentration ratios
predicted by fs-LA-ICP-MS showed high accuracy, to 95–97% of the values measured with ICP-OES, for Cu, In,
Ga, and Se elements.