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Metallization Grid on Azo by Electrodeposition of Copper
A. Lachowicz, G. Christmann, A. Descoeudres, B. Min, S. Bordihn, R. Peibst, S. Nicolay, C. Ballif
CIGS, Solar Cells, Copper Plating, Aluminum Zin Oxide
Perovskites, other Non-Silicon-Based Photovoltaics and Multi-Junction Devices
Subtopic: CI(G)S, CdTe and Related Thin Film Solar Cells
Event: 36th European Photovoltaic Solar Energy Conference and Exhibition
Session: 3BV.1.28
677 - 678
ISBN: 3-936338-60-4
Paper DOI: 10.4229/EUPVSEC20192019-3BV.1.28
0,00 EUR
Document(s): paper


Aluminum zinc oxide is chemically very sensitive and wet processing solutions have to be carefully chosen. We present a process sequence for electrodeposition of copper on solar cells, originally developed for heterojunction cells with indium thin oxide and modified for solar cells with aluminum zinc oxide. The process comprises a sputtered seed layer and patterning by hotmelt inkjet printing. High efficiency above 24.7% and excellent reliability have been demonstrated on heterojunction cells with ITO, good fill factor achieved on c-Si cells with poly-Si carrier selective contacts with AZO and the process has been demonstrated on industrial CIGS substrates.