# Defect mitigation <i>via</i> fullerene-based functional additives for enhanced efficiency and stability in tin perovskite solar cells

https://mdr.nims.go.jp/datasets/ed8a00d5-9c88-4b8d-9002-75266c5536e2

## File

- [Sn-PSCs-JMCA-NIMS-Authors final version.pdf](https://mdr.nims.go.jp/filesets/c3818599-9598-4dfa-a63a-a0707cf7eb8d/download) ([Detail](https://mdr.nims.go.jp/filesets/c3818599-9598-4dfa-a63a-a0707cf7eb8d.md))

## Id

ed8a00d5-9c88-4b8d-9002-75266c5536e2

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-08-08T23:45:03.174074Z

## Updated at

2025-08-18T07:30:39.192799Z

## Published at

2025-08-18T07:21:31.201962Z

## Doi

https://doi.org/10.48505/nims.5633

## First published url

https://doi.org/10.1039/d4ta08566c

## Date published

2025-05-07

## Recorded date published

2025-7-22

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Defect mitigation <i>via</i> fullerene-based functional additives for enhanced
    efficiency and stability in tin perovskite solar cells
  title_type: original
  lang: en

## Description

- description: Tin-based perovskite solar cells (Sn-PSCs) represent a promising lead-free
    alternative for photovoltaic applications, however, their oxidation of Sn2+ to
    Sn4+, induces structural defects and compromises device stability and efficiency.
    In this study, we introduced fullerene-based multifunctional molecules (F-COOH,
    F-OH, F-OSO3H) as additives to interact with Sn2+ ions, effectively stabilizing
    tin in its reduced state. These functional additives affect the growth and optoelectronic
    properties of tin perovskite film. Among these additives, F-COOH significantly
    suppresses Sn4+ formation and non-radiative recombination. Consequently, the device
    with the F-COOH additive exhibits an increased power conversion efficiency (PCE)
    from 8.20 to 11.22%, along with improved reproducibility and stability. While
    additives with –OH and –OSO3H functional groups also enhance performance, the
    superior results with F-COOH are attributed to the localized electron density
    provided by the –COOH group, facilitated by its connection to the fullerene core
    through a sp3 hybridized carbon. Device analysis indicated that the F-COOH additive
    enhances the optoelectronic properties of Sn-PSCs, contributing to a higher diffusion
    potential while effectively minimizing bulk and interfacial defects. Thus, this
    work underscores the importance of functional group selection in molecular design
    to improve the efficiency and stability of Sn-PSCs, paving the way for advanced
    lead-free solar cell technologies.
  description_type: abstract
  lang: und

## Creator

- name: Aman Shukla
  role: author
  orcid: https://orcid.org/0009-0003-1687-3201
- name: Dhruba B. Khadka
  role: author
  orcid: https://orcid.org/0000-0001-9134-3890
- name: Chunqing Li
  role: author
  orcid: https://orcid.org/0009-0001-4220-4410
- name: Masahiro Rikukawa
  role: author
  orcid: https://orcid.org/0000-0003-4632-1072
- name: Yuko Takeoka
  role: author
  orcid: https://orcid.org/0000-0003-4958-3879
- name: Ryoji Sahara
  role: author
  orcid: https://orcid.org/0000-0003-0788-2985
- name: Masatoshi Yanagida
  role: author
  orcid: https://orcid.org/0000-0002-8065-7875
- name: Yasuhiro Shirai
  role: author
  orcid: https://orcid.org/0000-0003-2164-5468

## Contact agent



## Publisher

organization: Royal Society of Chemistry (RSC)

## Managing organization



## Keyword

- subject: Pb-free perovskite
  schema: not_defined
- subject: Tin perovskite
  schema: not_defined
- subject: Additive engineering
  schema: not_defined
- subject: Fullerene-based multifunctional molecule
  schema: not_defined
- subject: Tin oxidation
  schema: not_defined
- subject: Defect suppression
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of Materials Chemistry A
  issn: '20507488'
  volume: '13'
  issue: '29'
  start_page: 23487
  end_page: 23498

## Conference



## Related item



## Funding

- identifier: JPMJAN23B2
  funder_name: Advanced Low Carbon Technology Research and Development Program
- identifier: KURATA/#1572
  funder_name: Hitachi Global Foundation

## 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: c3818599-9598-4dfa-a63a-a0707cf7eb8d
  filename: Sn-PSCs-JMCA-NIMS-Authors final version.pdf
  content_type: application/pdf
  size: 1837741
  md5: 51186eb248d5430ab5cf24a2ea1ffb05

## Thumbnail

fileset_id: c3818599-9598-4dfa-a63a-a0707cf7eb8d
filename: Sn-PSCs-JMCA-NIMS-Authors final version.pdf