# Molecular Passivation for High-Efficiency and Stable Methylammonium-Free Perovskite Solar Cells with Fluorinated Supramolecules

https://mdr.nims.go.jp/datasets/4be63ece-88e6-4823-84ff-98caeafe2503

## File

- [KOSEN-NIMS-2023.pdf](https://mdr.nims.go.jp/filesets/30c064a5-3c61-481a-a3b1-efff7263bf67/download) ([Detail](https://mdr.nims.go.jp/filesets/30c064a5-3c61-481a-a3b1-efff7263bf67.md))

## Id

4be63ece-88e6-4823-84ff-98caeafe2503

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-09-16T02:51:15.432169Z

## Updated at

2026-09-17T05:00:33.471746Z

## Published at

2026-09-17T07:28:22.914850Z

## Doi

https://doi.org/10.48505/nims.6527

## First published url



## Date published



## Recorded date published



## Resource type

conference_presentation

## Manuscript type

na

## Collection



## Title

- title: フッ素化超分子を用いた高効率で安定なメチルアンモニウムフリーのペロブスカイト太陽電池の分子パッシベーション
  title_type: alternative
  lang: ja
- title: Molecular Passivation for High-Efficiency and Stable Methylammonium-Free
    Perovskite Solar Cells with Fluorinated Supramolecules
  title_type: original
  lang: en

## Description

- description: "Perovskite solar cells (PSCs) with state-of-the-art efficiencies consist
    of thermally unstable methylammonium (MA). Though the MA-free perovskite has superior
    thermal stability, there is a challenge to control the formation of the δ-perovskite
    phase which lowers device performance. In this work, 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. It
    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 device efficiency exceeding 22 % with a large area of ~1 cm2 which is a
    record-level device efficiency for MA/Br-free inverted PSCs. This approach underscores
    a universal strategy for defect passivation to further improve both the efficiency
    and operational thermal stability of PSCs and other optoelectronic application.\r\nReference:\r\n1)\tD.
    B. Khadka,* Y. Shirai, M. Yanagida, T. Tadano, K. Miyano, Advanced Energy Materials.
    2022, 2202029.\r\n2)\tD. B. Khadka,* Y. Shirai, M. Yanagida, K. Miyano; ACS Appl.
    Mater. Interfaces, 2019, 11, 7055.\r\n3)\tD. B. Khadka, Y. Shirai, M. Yanagida,
    J. W. Ryan, K. Miyano, J. Mater. Chem. C, 2017, 5, 8819."
  description_type: abstract
  lang: eng

## Creator

- name: KHADKA Dhruba Bahadur
  role: author
  orcid: https://orcid.org/0000-0001-9134-3890
  organization: National Institute for Materials Science
  department: Center for Green Research on Energy and Environmental Materials/Photovoltaic
    Materials Group
- name: SHIRAI Yasuhiro
  role: author
  orcid: https://orcid.org/0000-0003-2164-5468
  organization: National Institute for Materials Science
  department: Center for Green Research on Energy and Environmental Materials/Photovoltaic
    Materials Group
- name: YANAGIDA Masatoshi
  role: author
  orcid: https://orcid.org/0000-0002-8065-7875
  organization: National Institute for Materials Science
  department: Center for Green Research on Energy and Environmental Materials/Photovoltaic
    Materials Group
- name: MIYANO Kenjiro
  role: author
  orcid: https://orcid.org/0000-0002-5869-3087
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: NIMS

## Managing organization



## Keyword

- subject: Perovskite Solar cells
  schema: not_defined
- subject: Interface Passivation
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: The 1st KOSEN Research International Symposium
start_date: 2023-03-01
end_date: 2023-03-02
identifier: https://kris2023.kosen-k.go.jp/ja/

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## Fileset

- id: 30c064a5-3c61-481a-a3b1-efff7263bf67
  filename: KOSEN-NIMS-2023.pdf
  content_type: application/pdf
  size: 5077641
  md5: 44ad41052e1b8d11667d90e6dad42f43

## Thumbnail

fileset_id: 30c064a5-3c61-481a-a3b1-efff7263bf67
filename: KOSEN-NIMS-2023.pdf