Improving Crystalline Quality of Non-Vacuum Processed Cu(In,Ga) Se-2 Thin Films by Femtosecond Laser Annealing
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Abstract
We demonstrate the advantages of femtosecond laser annealing on non-vacuum CIGS thin films. The PL spectra implied some defect-levels or band-fluctuations were eliminated, and the conversion efficiency and ideal factor were enhanced after laser annealing.