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Alternative title: フルオロアレーンヒドラジンを使用したメチルアンモニウム/Brフリーペロブスカイト太陽電池の効率と安定性の調整

Description:

Halide perovskite solar cells (PSCs) with state-of-the-art efficiencies consist of thermally unstable methylammonium (MA). In this report, we have employed the surface passivation method with multifunctional fluoroarene molecule, which suppresses the formation of PbI2 and δ-perovskite phase in MA/Br-free perovskite film. The penta fluoro-phenylhydrazine (5F-PHZ) passivation effectively mitigates the defects at surface or grain boundaries in perovskite film with fluoroarene embedded interfacial layer as a consequence of stronger halogen bonding with fluoroarene moieties or NH-NH2 terminal. As a result, the PSC with a p-i-n configuration achieved superior operational thermal stability and a PCE exceeding 22 % with a large area of ~1 cm2. This work underscores a universal strategy for defect passivation to further improvement of efficiency using a multifunctional passivator. This report gives insights into the film growth properties, device photo-physics, and defect analysis correlating with device performance and device stability.

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• Creative Commons BY Attribution 4.0 International
  

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Date published: 2023-06-13

Publisher: IEEE PVSC 50

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Conference: 50th IEEE Photovoltaic Specialists Conference (PVSC 50) (2023-06-13)

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Manuscript type: Not a journal article

MDR DOI: https://doi.org/10.48505/nims.4196

First published URL: https://ieee-pvsc.org/ePVSC/mobile/show_session.php?greendot=no&id=58&dayshow=3

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Updated at: 2023-06-27 13:42:12 +0900

Published on MDR: 2023-06-28 13:54:43 +0900