# Surface Passivation with Multifunctional Fluoroarene Molecule for High-Efficiency and Stable MA-Free Perovskite Solar Cells

https://mdr.nims.go.jp/datasets/22114b24-20c2-46cc-8bc0-0a1e467d1e0e

## File

- [IPEROP-2023-Khadka-NIMS-2023.pdf](https://mdr.nims.go.jp/filesets/db67a00a-f2ad-4dba-9c8d-5f7f7f776ce5/download) ([Detail](https://mdr.nims.go.jp/filesets/db67a00a-f2ad-4dba-9c8d-5f7f7f776ce5.md))

## Id

22114b24-20c2-46cc-8bc0-0a1e467d1e0e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-11-10T07:40:34.707217Z

## Updated at

2026-11-11T05:45:28.800640Z

## Published at

2026-11-11T07:25:04.519582Z

## Doi

https://doi.org/10.48505/nims.8724

## First published url



## Date published



## Recorded date published



## Resource type

conference_presentation

## Manuscript type

na

## Collection



## Title

- title: 高効率で安定した MA フリーのペロブスカイト太陽電池のための多官能性フルオロアレーン分子による表面パッシベーション
  title_type: alternative
  lang: ja
- title: Surface Passivation with Multifunctional Fluoroarene Molecule for High-Efficiency
    and Stable MA-Free Perovskite Solar Cells
  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 decreases device performance. This work reports on the surface passivation
    method with multifunctional fluoroarene molecule which suppresses the formation
    of PbI2 and δ-perovskite phase in MA/Br-free perovskite film. We found that the
    fluoroarene passivation has significantly impacted the morphology, interface chemistry,
    and optoelectronic properties of HaP films. The fluoroarene hydrazine passivation
    effectively mitigates the defects at surface or grain boundaries in perovskite
    film with fluoroarene-embedded interfacial layer due to stronger halogen bonding
    with fluoroarene moieties. Therefore, the PSC achieved superior operational stability
    and a power conversion efficiency (PCE) exceeding 22 % with a large area of ~1
    cm2 which is a record-level PCE for MA/Br-free inverted PSCs. This approach is
    also equally effective in improving the PCE of both narrow and wide bandgap perovskite
    systems by lowering the open-circuit voltage deficit. This report will shed light
    on the synergetic effect of fluoroarene molecular passivation in film growth and
    photo-physics of PSCs. '
  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

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## Keyword

- subject: Perovskite Solar cells
  schema: not_defined

## Rights

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

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## Embargo



## Journal



## Conference

name: Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and
  Optoelectronics (IPEROP23)
start_date: 2023-01-23
end_date: 2023-01-24
identifier: https://www.nanoge.org/IPEROP23/home

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## Fileset

- id: db67a00a-f2ad-4dba-9c8d-5f7f7f776ce5
  filename: IPEROP-2023-Khadka-NIMS-2023.pdf
  content_type: application/pdf
  size: 4501504
  md5: 43fcbc33360f4a96c6deecbc83c5a393

## Thumbnail

fileset_id: db67a00a-f2ad-4dba-9c8d-5f7f7f776ce5
filename: IPEROP-2023-Khadka-NIMS-2023.pdf