# Modulating Defects in Wide Bandgap Tin Perovskite Solar Cells through Molecular Passivation

https://mdr.nims.go.jp/datasets/d16b94a4-6636-43f7-b3e5-4fb806aca75b

## File

- [PVSEC-35_Abstract.pdf](https://mdr.nims.go.jp/filesets/b93e187c-69e7-4885-9b14-3a8ec6726252/download) ([Detail](https://mdr.nims.go.jp/filesets/b93e187c-69e7-4885-9b14-3a8ec6726252.md))

## Id

d16b94a4-6636-43f7-b3e5-4fb806aca75b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-26T09:54:54.213137Z

## Updated at

2024-12-12T03:30:29.835843Z

## Published at

2024-12-12T03:30:30.090031Z

## Doi

https://doi.org/10.48505/nims.5141

## First published url



## Date published



## Recorded date published



## Resource type

conference_presentation

## Manuscript type

na

## Collection



## Title

- title: 分子不動態化によるワイドバンドギャップ錫ペロブスカイト太陽電池の欠陥の調節
  title_type: alternative
  lang: ja
- title: Modulating Defects in Wide Bandgap Tin Perovskite Solar Cells through Molecular
    Passivation
  title_type: original
  lang: en

## Description

- description: "Perovskite-based tandem photovoltaic (PV) devices show promise for
    surpassing single-junction efficiency limits. However, the use of toxic lead in
    perovskites hampers their application in silicon or perovskite/perovskite tandem
    structures. Addressing lead toxicity is crucial for these advanced solar cells'
    commercial viability and environmental safety. Researchers are developing lead-free
    alternatives, such as tin-based perovskites, to overcome this challenge.\r\nTin
    perovskite could be an alternative to be compiled as subcells in tandem structure.
    Herein, we present the fabrication of lead-free, wide band gap Sn-based halide
    perovskite, an optimal candidate for top cell applications. The WB-Sn-HP perovskite
    solar cells (PSCs) achieved a promising power conversion efficiency (PCE) of over
    11% using ASnI2Br perovskite, enhanced by molecular surface passivation with fluorobenzyl
    derivative. Enhancing device performance hinges on meticulously engineering both
    the surface and bulk properties of the WB-Sn-HP film through molecular treatment,
    which benefits from the stronger electrostatic potential and interactions with
    molecular functionalities. This surface treatment mitigates defect chemistries
    by adjusting the surface chemistry and interfacial energy. This report will discuss
    the film growth properties, materials chemistry, and photo-physics correlating
    with device performance and stability.\r\n"
  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: 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
- 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: MIYANO Kenjiro
  role: author
  organization: National Institute for Materials Science
  department: Management and Planning Office

## Contact agent



## Publisher



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## Keyword

- subject: " Perovskite-based tandem photovoltaic"
  schema: not_defined
- subject: Wide band gap Sn-perovskite
  schema: not_defined
- subject: Molecular functionalities
  schema: not_defined
- subject: " Molecular treatment"
  schema: not_defined
- subject: Toxic lead
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: PVSEC-35
start_date: 2024-11-10
end_date: 2024-11-15
identifier: https://www.pvsec-35.com/index.html

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## Funding



## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: b93e187c-69e7-4885-9b14-3a8ec6726252
  filename: PVSEC-35_Abstract.pdf
  content_type: application/pdf
  size: 206713
  md5: c4e9e07b796dbeb18a0870ad54cb07c7

## Thumbnail

fileset_id: b93e187c-69e7-4885-9b14-3a8ec6726252
filename: PVSEC-35_Abstract.pdf