Presentation Details
| A contactless approach for tandem solar cell performance diagnostics Shuai Nie1, Yan Zhu1, Arthur Julien1, Felix Gayot1, Zubair Abdullah-Vetter1, Joël Wyttenbach2, Carine Roux2, Ziv Hameiri1. 1University of New South Wales, Sydney, Australia.2CEA INES, Le Bourget du Lac, France |
Abstract
Accurate assessment of solar cell performance is critical for optimising tandem devices; however, conventional current-voltage measurements relying on electrical contacts have inherent limitations, including mechanical stress, low throughput, and inability to resolve sub-cell behaviour. In this study, we present a simple, fully contactless technique for current-voltage characterisation based on luminescence-based measurements. The method is validated on monolithic perovskite-silicon tandem solar cells, showing good agreement with conventional contacted measurements. Unlike standard approaches, this technique provides deeper insights by enabling independent evaluation of each sub-cell and mapping spatial non-uniformities, which are essential for identifying device performance-limiting factors. Furthermore, its non-destructive nature allows assessment of the bottom cell prior to perovskite deposition, supporting process control and optimisation. This contactless framework paves the way for high-throughput and non-destructive diagnostics for advanced tandem solar cell manufacturing.
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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.