Deciphering the Origins of P1-Induced Power Losses in CIGS Modules Through Hyperspectral Luminescence

Quiroz COR, Dion-Bertrand LI, Brabec C, Müller J, Orgassa K (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Engineering Elsevier

DOI: 10.1016/j.eng.2019.12.019

Abstract

In this report, we show that hyperspectral high-resolution photoluminescence mapping is a powerful tool for the selection and optimization of the laser ablation processes used for the patterning interconnections of subcells on Cu(Inx,Ga1−x)Se2 (CIGS) modules. In this way, we show that in-depth monitoring of material degradation in the vicinity of the ablation region and the identification of the underlying mechanisms can be accomplished. Specifically, by analyzing the standard P1 patterning line ablated before the CIGS deposition, we reveal an anomalous emission-quenching effect that follows the edge of the molybdenum groove underneath. We further rationalize the origins of this effect by comparing the topography of the P1 edge through a scanning electron microscope (SEM) cross-section, where a reduction of the photoemission cannot be explained by a thickness variation. We also investigate the laser-induced damage on P1 patterning lines performed after the deposition of CIGS. We then document, for the first time, the existence of a short-range damaged area, which is independent of the application of an optical aperture on the laser path. Our findings pave the way for a better understanding of P1-induced power losses and introduce new insights into the improvement of current strategies for industry-relevant module interconnection schemes.

Authors with CRIS profile

Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

NICE Solar Energy GmbH DE Germany (DE) Université de Montréal CA Canada (CA)

How to cite

APA:

Quiroz, C.O.R., Dion-Bertrand, L.I., Brabec, C., Müller, J., & Orgassa, K. (2020). Deciphering the Origins of P1-Induced Power Losses in CIGS Modules Through Hyperspectral Luminescence. Engineering. https://dx.doi.org/10.1016/j.eng.2019.12.019

MLA:

Quiroz, César Omar Ramírez, et al. "Deciphering the Origins of P1-Induced Power Losses in CIGS Modules Through Hyperspectral Luminescence." Engineering (2020).

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