A5039390956- Silicon and Solar Cell Technologies
- Photovoltaic Systems and Sustainability
- Thin-Film Transistor Technologies
- Industrial Vision Systems and Defect Detection
- solar cell performance optimization
- Advancements in Photolithography Techniques
Fraunhofer Institute for Solar Energy Systems
2021-2024
Abstract Fine line screen printing for solar cell metallization is one of the most critical steps in entire production chain cells, facing challenge providing a conductive grid with minimum amount resource consumption at an ever increasing demand higher speeds. The continuous effort industrial and scientific community has led to tremendous progress over last 20 years, demonstrating average reduction rate finger width approximately 7 µm per year latest highlight achieving widths 19 µm....
The industrial metallization of Si solar cells predominantly relies on screen printing, with silver as the preferred electrode material. However, design commercial screens often leads to suboptimal usage and increased electrical resistance due print-related inhomogeneities like mesh marks, constrictions spreading. Real-time monitoring quality parameters during production has thus become increasingly critical. Current inline optical control systems usually only include 2D visualizations...
Currently, the photovoltaic manufacturing industry is confronted with an upcoming material shortage, primarily driven by continued dependence on silver for front‐side metallization in TOPCon, SHJ, and PERC solar cells. This study employs a mathematical model originally introduced Ney et al. 2019 to predict outcome of printed contact structures based mesh characteristics. For validation, printing experiments are conducted variations speed, screen angle, calendaring strength. It generally...
Today's PV production chain heavily relies on screen printing as the predominant metallization process because of its robust capabilities. However, continuous demand to further increase throughput rates while at same time decreasing printed structure sizes is going create fundamental challenges in upcoming years. In order address this problem, fine-line screens competitive costs need be developed. Throughout study, we present an optimization architectures by utilizing evolutionary algorithm....