Presentation Details
| Experimental Methods for Perovskite Mini-module Analysis Claudia Buerhop-Lutz1, Ones ghaffari1, Shudi Qiu2, Michael Wagner1, Oleksandr Stroyuk1, Ian Marius Peters1. 1Forschungszentrum Juelich GmbH, HI ERN, Erlangen, Germany.2Friedrich-Alexander-Universität Erlangen-Nürnberg, Faculty of Engineering, Department of Materials, Erlangen, Germany |
Abstract
The study evaluates characterization methods for defect detection in perovskite mini-modules (seven subcells in 5 × 5 cm² substrate, doctor-bladed), highlighting their benefits and constraints. Complementary optical (visual VIS, electroluminescence EL, photoluminescence PL imaging), spectroscopic PL mapping, microscopic, and electrical (I–V) techniques were applied at initial measurements and after five months of storage. EL imaging revealed a “pre-conditioning” effect arising from intrinsic perovskite hysteresis. Mini-modules exhibited localized degradation, thickness-dependent features, and substantial electrical losses. Simple, non-destructive imaging techniques rapidly identified defects and correlated with high-resolution PL scans, demonstrating scalability to full-size modules. While these methods are scalable, limitations exist in resolution and spectral detail compared with pointwise spectroscopic mapping. The results address module optimization, reliability assessment, and industrial inspection strategies.
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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.