Ferroelectric poling of methylammonium lead iodide thin films

Holger Röhm; Tobias Leonhard; Alexander D. Schulz; Susanne Wagner; Michael J. Hoffmann; Alexander Colsmann

doi:10.1117/12.2568891

20 August 2020 Ferroelectric poling of methylammonium lead iodide thin films

Holger Röhm, Tobias Leonhard, Alexander D. Schulz, Susanne Wagner, Michael J. Hoffmann, Alexander Colsmann

Proceedings Volume 11474, Organic, Hybrid, and Perovskite Photovoltaics XXI; 114741S (2020) https://doi.org/10.1117/12.2568891
Event: SPIE Organic Photonics + Electronics, 2020, Online Only

Conference Poster

Abstract

In this work, the authors investigate the ferroelectric properties of methylammonium lead iodide, which is the reference material for modern perovskite solar cells. By usage of a particular device architecture of a Si-substrate with microstructured gold electrodes, poling fields are applied to the thin films in lateral direction. Piezoresponse Force Microscopy reveals poling of ferroelectric domains on the nanometer scale, which in turn results in a change of macroscopic conductivity. The electric field that is required to trigger the poling process is of a similar magnitude as electric fields in a solar cell under operation, which underlines the importance of understanding the relationship between microsctructure and solar cell performance.

Citation Download Citation

Holger Röhm, Tobias Leonhard, Alexander D. Schulz, Susanne Wagner, Michael J. Hoffmann, and Alexander Colsmann "Ferroelectric poling of methylammonium lead iodide thin films", Proc. SPIE 11474, Organic, Hybrid, and Perovskite Photovoltaics XXI, 114741S (20 August 2020); https://doi.org/10.1117/12.2568891

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