Two-Colored Organic Photovoltaic Modules Enabled by Laser Annealing

Shu H, Weitz P, Steinberger M, Basu R, Heumüller T, Brabec C, Egelhaaf HJ, Distler A (2026)

Publication Type: Journal article

Publication year: 2026

Journal

Solar RRL Wiley-VCH

Book Volume: 10

Article Number: e70417

Journal Issue: 12

DOI: 10.1002/solr.70417

Abstract

Thermal annealing is a crucial step during the fabrication of organic photovoltaics (OPV). In this work, for the first time, we use a CO2 laser to perform contactless and spatially resolved annealing of solar cells and modules based on P3HT:O-IDTBR—an active material system that shows a color change upon annealing. The effect of laser annealing is thoroughly investigated by different optical, electrical, and morphological characterization techniques and compared to the commonly used hotplate annealing, finding similar results for both annealing techniques. Furthermore, we upscale our developed laser annealing method and apply it to fabricate two-colored organic photovoltaic modules with 6.0% PCE on 10 cm² and 5.0% on 201 cm². Finally, we demonstrate that CO2 laser annealing can also be applied to novel high-performance material systems such as PM6:Y6-C12:PC61BM.

Authors with CRIS profile

Paul Weitz Institute Materials for Electronics and Energy Technology (i-MEET) Marc Steinberger Institute Materials for Electronics and Energy Technology (i-MEET) Robin Basu Institute Materials for Electronics and Energy Technology (i-MEET) Thomas Heumüller Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET) Andreas Distler Institute Materials for Electronics and Energy Technology (i-MEET)

How to cite

APA:

Shu, H., Weitz, P., Steinberger, M., Basu, R., Heumüller, T., Brabec, C.,... Distler, A. (2026). Two-Colored Organic Photovoltaic Modules Enabled by Laser Annealing. Solar RRL, 10(12). https://doi.org/10.1002/solr.70417

MLA:

Shu, Huan, et al. "Two-Colored Organic Photovoltaic Modules Enabled by Laser Annealing." Solar RRL 10.12 (2026).

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