# Surface Passivation of Sn-Based Wide Band Gap Perovskite Solar Cells Using Functional Molecules

https://mdr.nims.go.jp/datasets/c484c3d8-40f2-4a95-9fa3-ba069e4e7920

## File

- [IEEE-PVSC-2025-WB-Sn-KHADKA.pdf](https://mdr.nims.go.jp/filesets/6b9d6bde-ba41-4fde-8548-c7287ff3bab9/download) ([Detail](https://mdr.nims.go.jp/filesets/6b9d6bde-ba41-4fde-8548-c7287ff3bab9.md))

## Id

c484c3d8-40f2-4a95-9fa3-ba069e4e7920

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-06-23T00:07:41.625006Z

## Updated at

2025-07-04T23:30:22.954110Z

## Published at

2025-07-04T23:17:26.511747Z

## Doi

https://doi.org/10.48505/nims.5561

## First published url



## Date published



## Recorded date published



## Resource type

conference_poster

## Manuscript type

na

## Collection



## Title

- title: 機能性分子を用いたSn系ワイドバンドギャップペロブスカイト太陽電池の表面パッシベーション
  title_type: alternative
  lang: ja
- title: Surface Passivation of Sn-Based Wide Band Gap Perovskite Solar Cells Using
    Functional Molecules
  title_type: original
  lang: en

## Description

- description: 'Surface passivation with multifunctional molecules is a powerful approach
    to enhancing the performance and stability of perovskite solar cells (PSCs). This
    study reports the fabrication of wide-bandgap tin-based perovskite solar cells
    (WB-Sn-PSCs) with a bandgap of 1.68 eV, achieving a power conversion efficiency
    of 11.14%. Molecular surface passivation using 4-Fluoro-benzohydrazide (F-BHZ)
    significantly improves device performance and stability by engineering both the
    surface and bulk properties of the WB-Sn-HP film. F-BHZ treatment strengthens
    electrostatic potential and molecular interactions with functional groups, mitigating
    surface defects and suppressing Sn²⁺ oxidation, as confirmed by theoretical calculations.
    This work highlights the potential of advanced chemical engineering strategies
    to optimize non-toxic, lead-free perovskite solar cells, advancing their competitiveness
    as environmentally friendly photovoltaic solutions. '
  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: Research Center for Energy and Environmental Materials (GREEN)/Battery
    and Cell Materials Field/Photovoltaic Materials Group
- name: YANAGIDA Masatoshi
  role: author
  orcid: https://orcid.org/0000-0002-8065-7875
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Battery
    and Cell Materials Field/Photovoltaic Materials Group
- name: SAHARA Ryoji
  role: author
  orcid: https://orcid.org/0000-0003-0788-2985
  organization: National Institute for Materials Science
  department: Research Center for Structural Materials/Materials Evaluation Field/Computational
    Structural Materials Group
- name: SHIRAI Yasuhiro
  role: author
  orcid: https://orcid.org/0000-0003-2164-5468
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Battery
    and Cell Materials Field/Photovoltaic Materials Group

## Contact agent



## Publisher



## Managing organization



## Keyword

- subject: Wide Bamdgap Tin Perovskite
  schema: not_defined
- subject: Crystallization regulation
  schema: not_defined
- subject: Sn Oxidation
  schema: not_defined
- subject: Defect Passivation
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal



## Conference

name: 53rd IEEE Photovoltaic Specialists Conference
start_date: 2025-06-08
end_date: 2025-06-13
identifier: https://ieee-pvsc.org/PVSC53/

## Related item



## Funding



## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 6b9d6bde-ba41-4fde-8548-c7287ff3bab9
  filename: IEEE-PVSC-2025-WB-Sn-KHADKA.pdf
  content_type: application/pdf
  size: 1416359
  md5: 56fb53b7d285a512155771cfea48c6d6

## Thumbnail

fileset_id: 6b9d6bde-ba41-4fde-8548-c7287ff3bab9
filename: IEEE-PVSC-2025-WB-Sn-KHADKA.pdf