# Minimization of Energy Level Mismatch of PCBM and Surface Passivation for Highly Stable Sn‐Based Perovskite Solar Cells by Doping n‐Type Polymer

https://mdr.nims.go.jp/datasets/7d034889-6fdf-4fec-acb0-12562ae555c3

## File

- [Minimization of Energy Level Mismatch by Emrul.docx](https://mdr.nims.go.jp/filesets/02861645-a3cf-45db-818b-7dcfad4ed4b3/download) ([Detail](https://mdr.nims.go.jp/filesets/02861645-a3cf-45db-818b-7dcfad4ed4b3.md))

## Id

7d034889-6fdf-4fec-acb0-12562ae555c3

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-01-09T09:13:48.037513Z

## Updated at

2025-01-10T07:31:23.955721Z

## Published at

2025-01-10T07:31:24.042509Z

## Doi

https://doi.org/10.48505/nims.5261

## First published url

https://doi.org/10.1002/smll.202402896

## Date published

2024-06-19

## Recorded date published

2024-10

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Minimization of Energy Level Mismatch of PCBM and Surface Passivation for
    Highly Stable Sn‐Based Perovskite Solar Cells by Doping n‐Type Polymer
  title_type: original
  lang: en

## Description

- description: Developing high-performance and stable Sn-based perovskite solar cells
    (PSCs) is difficult due to the inherent tendency of Sn2+ oxidation and, the huge
    energy mismatch between perovskite and Phenyl-C61-butyric acid methyl ester (PCBM),
    a frequently employed electron transport layer (ETL). This study demonstrates
    that perovskite surface defects can be passivated and PCBM's electrical properties
    improved by doping n-type polymer N2200 into PCBM. The doping of PCBM with N2200
    results in enhanced band alignment and improved electrical properties of PCBM.
    The presence of electron- donating atoms such as S, and O in N2200, effectively
    coordinates with free Sn2+ to prevent further oxidation. The doping of PCBM with
    N2200 offers a reduced conduction band offset (CBO) (from 0.38 to 0.21 eV) at
    the interface between the ETL and perovskite. As a result, the N2200 doped PCBM-based
    PSCs show an enhanced open circuit voltage of 0.79 V with impressive power conversion
    efficiency (PCE) of 12.98 % (certified PCE 11.95 %). Significantly, the N2200
    doped PCBM-based PSCs exhibited exceptional stability and retained above 90 %
    of their initial PCE when subjected to continuous illumination at maximum power
    point tracking for 1000 hours under one sun.
  description_type: abstract
  lang: en

## Creator

- name: Md. Emrul Kayesh
  role: author
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Md. Abdul Karim
  role: author
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Yulu He
  role: author
- name: Yasuhiro Shirai
  role: author
  orcid: https://orcid.org/0000-0003-2164-5468
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Masatoshi Yanagida
  role: author
  orcid: https://orcid.org/0000-0002-8065-7875
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Ashraful Islam
  role: author
  orcid: https://orcid.org/0000-0002-1633-1432
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: Minimization of Energy Level Mismatch
  schema: not_defined
- subject: Perovskite Solar Cells
  schema: not_defined
- subject: n-type Polymer
  schema: not_defined
- subject: Stable Sn-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: Small
  issn: '16136810'
  volume: '20'
  issue: '43'
  article_number: '2402896'

## Conference



## Related item



## Funding

- identifier: JPMJMI21E6
  funder_name: JST-Mirai Program

## Instrument



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## Measurement method



## Specimen



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## Structural feature for specimen



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## Fileset

- id: '02861645-a3cf-45db-818b-7dcfad4ed4b3'
  filename: Minimization of Energy Level Mismatch by Emrul.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 11625780
  md5: c211aa85589a203d6685ae0e7650e19d

## Thumbnail

fileset_id: '02861645-a3cf-45db-818b-7dcfad4ed4b3'
filename: Minimization of Energy Level Mismatch by Emrul.docx