Presentation Details
| Use of Ion Blocking Layers on Accurate Measurement of Ion Densities In Perovskite Solar Cells Anders Peterson, Purnendu Kartikay, Shadab Soomro, Vikram Dalal, . Iowa State University, Ames, IA, USA |
Abstract
In perovskite solar cells, the reliability of accurate ion characterization methods is an ongoing challenge. For most techniques, transport layers create significant measurement interference and result in inaccurate or overestimated results. One possibility for this is ion migration from the perovskite layer into supporting organic layers. This study demonstrates the use of a thin PbBr2 ion blocking layer between the perovskite absorber and an organic P3HT hole transport layer (HTL) to prevent this phenomena. We observe the impacts of ion blocking through the Bias Assisted Charge Extraction (BACE) measurement, which results in identical ion densities between HTL free devices and devices incorporating the PbBr2 ion blocking layer.
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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.