Laser patterning of P2 interconnect via in thin-film CIGS PV modules

Westin, Per-Oskar; Zimmermann, Uwe; Edoff, Marika

doi:10.1016/j.solmat.2008.04.015

Cited by 71 publications

(35 citation statements)

References 13 publications

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“…Efficiency measurements of fully laser scribed mini-modules had been reported by several groups (Burn et al, 2013;Murison et al, 2010;Westin et al, 2008Westin et al, , 2011. However, this approach requires the integration of the laser scribing tool into the CIGS production line or its close geographical location.…”

Section: Introductionmentioning

confidence: 99%

Validation of monolithic interconnection conductivity in laser scribed CIGS thin-film solar cells

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Validation of monolithic interconnection conductivity in laser scribed CIGS thin-film solar cells

et al. 2015

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“…These trenches P1, P2, and P3 are processed between individual deposition steps during fabrication. Today, P1 and P2 trenches can be conveniently realized using short-pulse and ultrashortpulse laser systems, respectively [5,6]. However, depending on the specific CIGS composition and underlying absorption spectrum, laser processing for P3 scribing still involves difficulties that are not yet satisfactorily solved.…”

Section: Introductionmentioning

confidence: 99%

CIGS P3 scribing using ultrashort laser pulses and thermal annealing

et al. 2015

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In general, laser structuring of CIGS solar modules causes material modifications in the vicinity of the processed area. The irradiated region often reveals high densities of defect states or melt that affect the electrical properties dramatically. In particular, this is a problem for laser P3 scribing where trenches should isolate the front from the back electrode. In this paper, we demonstrate optimized P3 scribes using ultrashort-pulse laser processing in combination with thermal annealing yielding permanently increased solar cell performance. We further investigate this behavior with the help of a two-diode equivalent circuit model. The simulations correlate very well to our obtained experimental results. We show that basically two main effects are responsible for the performance increase after thermal annealing. Firstly, the recombination current within the p–n junction decreases over orders of magnitudes, and secondly, the overall shunt resistance rises significantly

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“…Kim et al [17] developed an efficient laser technique for scribing the P1-P3 layers of thin-film solar cells at 1000 mm/s. The processes for scribing the P2 and P3 layers are particularly crucial because they relate to forming a series of interconnected cells, which affects the energy-conversion efficiency of thin-film CIGS-based PV modules through pulse laserinduced thermal effects [18]. Moreover, Lee et al [19] reported that the efficiency of using a nanosecond-pulsed laser process to form thin-film PV modules depends on the cell efficiency and surface pattern quality.…”

Section: Introductionmentioning

confidence: 99%