Presentation Details
| Stabilizing Interconnection Interfaces in Perovskite Solar Modules through Additive Flexographic Patterning Mariia Klymenko, Yanan Li, William Scheideler. Dartmouth College, Hanover, NH, USA |
Abstract
Metal halide perovskite (PVSK) solar cells have achieved rapid efficiency gains, but module‑level stability remains a key barrier to commercialization. Here, we investigate how P2 interconnection fabrication influences degradation and performance in flexographically printed and laser‑scribed perovskite modules. Under accelerated light and thermal aging, laser‑scribed modules exhibit degradation initiating at the P2 interface and propagating into the active layer, while flexographically patterned interconnections show no visible degradation. Flexographic patterning also yields lower line edge and line width roughness than laser scribing, resulting in more uniform interconnections. EDX and Raman spectroscopy identify PbI₂ formation and Ag‑related interfacial degradation at laser‑scribed P2 regions, whereas flexographically patterned modules show no perovskite decomposition or Ag diffusion. As a result, flexographically printed modules demonstrate improved performance and enhanced operational stability
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
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