# Effect of Alkali-Metal Additive on Rudorffite AgBiI<sub>4</sub>-Based Pb-Free Solar Cells

https://mdr.nims.go.jp/datasets/6bd79ffd-cbab-4550-9d53-64cf1dc24271

## File

- [Main-ACS-AEM-Accepted Version.pdf](https://mdr.nims.go.jp/filesets/df66b6d6-9258-4e4b-9e20-c872c2056131/download) ([Detail](https://mdr.nims.go.jp/filesets/df66b6d6-9258-4e4b-9e20-c872c2056131.md))

## Id

6bd79ffd-cbab-4550-9d53-64cf1dc24271

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-04-15T05:47:44.549260Z

## Updated at

2025-04-15T06:33:51.502712Z

## Published at

2026-03-31T03:24:50.123089Z

## Doi

https://doi.org/10.48505/nims.5431

## First published url

https://doi.org/10.1021/acsaem.5c00234

## Date published

2025-04-14

## Recorded date published

2025-4-14

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Effect of Alkali-Metal Additive on Rudorffite AgBiI<sub>4</sub>-Based Pb-Free
    Solar Cells
  title_type: original
  lang: en

## Description

- description: " Rudorffite material, silver bismuth iodide, is one of the promising
    lead-free alternatives for photovoltaic applications due to its high absorption
    coefficient, low toxicity, and relatively better stability. Here, we report on
    the effects of alkali halide additive in the absorber material AgBiI4, focusing
    on its material properties and solar cell devices. The inclusion of NaI significantly
    improved the film quality with compact and pinhole-free morphology and better
    crystallinity. The device with rudorffite material with NaI additive demonstrated
    a notable increase in the PCE from 1.33 to 3.72%, along with improved device stability.
    The device analysis confirmed that NaI incorporation in AgBiI4 modulates the optoelectronic
    quality, effectively suppressing charge recombination and enhancing charge extraction
    within the device. Thus, this work corroborates that additive engineering is an
    effective strategy for improving both the efficiency and stability of AgBiI4-based
    rudorffite solar cells, underscoring their potential in sustainable photovoltaic
    applications."
  description_type: abstract
  lang: und

## Creator

- name: Shanas Fatima
  role: author
  orcid: https://orcid.org/0009-0000-8233-6277
- name: Dhruba B. Khadka
  role: author
  orcid: https://orcid.org/0000-0001-9134-3890
- name: Masatoshi Yanagida
  role: author
  orcid: https://orcid.org/0000-0002-8065-7875
- name: Sunil Kumar Singh
  role: author
  orcid: https://orcid.org/0000-0002-1028-6255
- name: Yasuhiro Shirai
  role: author
  orcid: https://orcid.org/0000-0003-2164-5468

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: lead-free
  schema: not_defined
- subject: Ag-Bi-I system
  schema: not_defined
- subject: rudorffite
  schema: not_defined
- subject: additive
  schema: not_defined
- subject: photovoltaic
  schema: not_defined
- subject: defect passivation
  schema: not_defined

## Rights

- description: This document is the Accepted Manuscript version of a Published Work
    that appeared in final form in ACS Applied Energy Materials, copyright © 2025
    American Chemical Society after peer review and technical editing by the publisher.
    To access the final edited and published work see https://doi.org/10.1021/acsaem.5c00234.
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-03-31
end_date: 2026-04-01

## Journal

- title: ACS Applied Energy Materials
  issn: '25740962'
  volume: '8'
  issue: '7'
  start_page: 4601
  end_page: 4608

## Conference



## Related item



## Funding

- identifier: '1572'
  funder_name: Kurata Memorial Hitachi Science and Technology 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: df66b6d6-9258-4e4b-9e20-c872c2056131
  filename: Main-ACS-AEM-Accepted Version.pdf
  content_type: application/pdf
  size: 1593664
  md5: ec1d1e5443670bd20cbf21840e16d5ce

## Thumbnail

fileset_id: df66b6d6-9258-4e4b-9e20-c872c2056131
filename: Main-ACS-AEM-Accepted Version.pdf