Presentation Details
| Optimization of PDINN as a Cathode Interlayer for Organic Solar Cells Muhammad Salik Qureshi , Amman Choughle, Ammar Nayfeh. Khalifa University, Abu Dhabi, United Arab Emirates |
Abstract
Materials selection and interfacial engineering plays an important role in determining the performance and stability of Organic Solar Cells (OSCs). This requires careful optimization of each functional layer. Among various cathode interlayer (CIL) candidates, is perylene diimade derivative functionalized with aliphatic amine group (PDINN) due lower work function and high electron selectivity. However, despite these favorable properties, the device performance remains highly sensitive to surface coverage and thickness uniformity underscoring the need for deposition optimization. For this purpose, deposition of PDINN has been optimized with respect to its concentration, speed, thickness, and duration for deposition. An optimal solution has been found at 2 mg/ml, statically dispensed and coated at 1000/4000 RPM for 10 and 30 second respectively. At this spin step, the OSCs showed open circuit voltage (Voc) of 0.914 V with short circuit current density (Jsc) of 18.958 mA/cm2, Fill factor (FF) of 52.2% and efficiency of 9.05% representing the best performance among the investigated processing parameters highlighting the importance of deposition condition on device performance efficiency.
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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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