Download file (560 KB)
Download as zip (516 KB)

Collection

Citation

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 (SF -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.

Rights:

• In Copyright
  

  © 2024 IEEE. Personal use of this material is permitted.  Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keyword: MA-free Perovskite, Fluoroarene molecule, device photo-physics, defect analysis, device stability

Date published: 2023-06-11

Publisher: IEEE

Journal:

• 2023 IEEE 50th Photovoltaic Specialists Conference (PVSC)

Funding:

• JST -Mirai Program JPMJMI21E6

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4764

First published URL: https://doi.org/10.1109/pvsc48320.2023.10359928

Related item:

• describes
• Modulating Efficiency and stability of Methylammonium/Br-Free Perovskite Solar Cells Using Fluoroarene Hydrazine (poster)
• https://doi.org/10.48505/nims.4196

Other identifier(s):

Contact agent:

Updated at: 2025-06-19 08:30:30 +0900

Published on MDR: 2025-06-19 01:31:52 +0900