# Interfacial Embedding for High‐Efficiency and Stable Methylammonium‐Free Perovskite Solar Cells with Fluoroarene Hydrazine

https://mdr.nims.go.jp/datasets/8194f5f9-6b54-481e-a881-cc9a98f08056

## File

- [aenm202202029-sup-0001-suppmat.pdf](https://mdr.nims.go.jp/filesets/aa21d758-1b17-4a4e-9a92-bab37224d68e/download) ([Detail](https://mdr.nims.go.jp/filesets/aa21d758-1b17-4a4e-9a92-bab37224d68e.md))
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## Id

8194f5f9-6b54-481e-a881-cc9a98f08056

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-27T00:32:35.609411Z

## Updated at

2024-11-28T07:31:23.331910Z

## Published at

2024-11-28T07:31:23.390381Z

## Doi



## First published url

https://doi.org/10.1002/aenm.202202029

## Date published

2022-08-17

## Recorded date published

2022-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Interfacial Embedding for High‐Efficiency and Stable Methylammonium‐Free
    Perovskite Solar Cells with Fluoroarene Hydrazine
  title_type: original
  lang: en

## Description

- description: Perovskite solar cells (PSCs) with state-of-the-art efficiencies consist
    of thermally unstable methylammonium (MA). Here, we have introduced interfacial
    passivation with pentafluoro-phenylhydrazine (5F-PHZ) to fabricate efficient and
    stable MA/Br-free PSCs. The 5F-PHZ surface treatment quenched the PbI2 and δ-perovskite
    phase formed in the pristine film. The surface passivation ameliorates the film
    chemistries at the surface with modulation of interface band alignment as a consequence
    of halogen bonding with fluoroarene moieties or NH-NH2 terminal. This results
    in a remarkably longer carrier lifetime with the passivation at the surface and
    grain boundaries trap centers. As a result, it boosts the power conversion efficiency
    (PCE) (area~1 cm2) from ~18.10% to 22.29% (VOC ~ 1.096 to 1.178 V) with superior
    operational thermal stability. We also achieved a certified PCE of 21.01% with
    a large area of ~1.026 cm2. We found that the surface passivation forms an interfacial
    embedded layer subsequent to attenuation of defect densities and suppression of
    ion migration, which is supported by density-function-theory calculation. Importantly,
    this approach is effective in enhancing the PCE of narrow and wide bandgap perovskite
    systems. Thus, our work opens up a new way for interface modulation with fluoroarene
    functional derivatives to achieve superior device performance and stability.
  description_type: abstract
  lang: und

## Creator

- name: Dhruba B. Khadka
  role: author
  orcid: https://orcid.org/0000-0001-9134-3890
  organization: National Institute for Materials Science
- name: Yasuhiro Shirai
  role: author
  orcid: https://orcid.org/0000-0003-2164-5468
  organization: National Institute for Materials Science
- name: Masatoshi Yanagida
  role: author
  orcid: https://orcid.org/0000-0002-8065-7875
  organization: National Institute for Materials Science
- name: Terumasa Tadano
  role: author
  orcid: https://orcid.org/0000-0002-8132-2161
  organization: National Institute for Materials Science
- name: Kenjiro Miyano
  role: author
  orcid: https://orcid.org/0000-0002-5869-3087
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: Fluoroarene
  schema: not_defined
- subject: Halogen bonding
  schema: not_defined
- subject: Surface passivation
  schema: not_defined
- subject: Thermal stability
  schema: not_defined
- subject: MA-free perovskite
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Advanced Energy Materials
  issn: '16146832'
  volume: '12'
  issue: '38'
  article_number: '2202029'

## Conference



## Related item



## Funding

- funder_name: Yazaki Memorial Foundation for Science and Technology

## 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: aa21d758-1b17-4a4e-9a92-bab37224d68e
  filename: aenm202202029-sup-0001-suppmat.pdf
  content_type: application/pdf
  size: 1866344
  md5: 244380a8b2ac2e645bb09ef883e158fb
- id: aeb90cbb-b11e-41a7-a821-a1294ce9681a
  filename: Advanced Energy Materials - 2022 - Khadka - Interfacial Embedding for
    High‐Efficiency and Stable Methylammonium‐Free.pdf
  content_type: application/pdf
  size: 3901478
  md5: dc7e474ca4c21dfea44094f93a66e97d

## Thumbnail

fileset_id: aeb90cbb-b11e-41a7-a821-a1294ce9681a
filename: Advanced Energy Materials - 2022 - Khadka - Interfacial Embedding for High‐Efficiency
  and Stable Methylammonium‐Free.pdf