NDLI: Nd:YAG laser annealing investigation of screen-printed CIGS layer on PET: Layer annealing method for photovoltaic cell fabrication process

Content Provider	IEEE Xplore Digital Library
Author	AlSaggaf, A. Alarousu, E. Boulfrad, S. Rothenberger, A.
Copyright Year	2014
Description	Author affiliation: Solar & Photovoltaic Eng. Res. Center, King Abdullah Univ. of Sci. & Technol., Thuwal, Saudi Arabia (AlSaggaf, A.; Alarousu, E.; Rothenberger, A.) \|\| Phys. Sci. & Eng. Div., King Abdullah Univ. of Sci. & Technol., Thuwal, Saudi Arabia (Boulfrad, S.)
Abstract	$Cu(In,Ga)Se_{2}$ (CIGS) ink was formulated from CIGS powder, polyvinyl butyral PVB, terpineol and polyester/polyamine co-polymeric dispersant KD-1. Thin films with different thicknesses were deposited on PET substrate using screen-printing followed by heat treatment using a Nd:YAG laser. The structure and morphology of the heated thin films were studied. The characterization of the CIGS powder, ink, and film was done using TGA, SEM, FIB, EDS, and XRD. TGA analysis shows that the CIGS ink is drying at 200 °C, which is well below the decomposition temperature of the PET substrate. It was observed by SEM that 20 pulses of 532nm and 60 $mJ/cm^{2}$ Nd:YAG laser annealing causes atomic diffusion on the near surface area. Furthermore, FIB cross section images were utilized to monitor the effect of laser annealing in the depth of the layer. Laser annealing effects were compared to as deposited layer using XRD in reference to CIGS powder. The measurement shows that crystallinity of deposited CIGS is retained while EDS quantification and atomic ratio result in gradual loss of selenium as laser energy increases. The laser parameters were tuned in an effort to utilize laser annealing of screen-printed CIGS layer as a layer annealing method for solar cell fabrication process.
Starting Page	0299
Ending Page	0303
File Size	723789
Page Count	5
File Format	PDF
e-ISBN	9781479943982
DOI	10.1109/PVSC.2014.6924918
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Annealing Pulsed laser deposition Ink Photovoltaic cells Substrates Surface treatment Powders photovoltaic cell fabrication CIGS films laser annealing screen-printing PET
Content Type	Text
Resource Type	Article

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