# Lattice dynamics of <math>  <mrow>    <mi>CH</mi>    <msub>      <mrow>        <mo>(</mo>        <msub>          <mi>NH</mi>          <mn>2</mn>        </msub>        <mo>)</mo>      </mrow>      <mn>2</mn>    </msub>    <msub>      <mi>PbI</mi>      <mn>3</mn>    </msub>  </mrow></math> and <math>  <mrow>    <mi>CH</mi>    <msub>      <mrow>        <mo>(</mo>        <msub>          <mi>NH</mi>          <mn>2</mn>        </msub>        <mo>)</mo>      </mrow>      <mn>2</mn>    </msub>    <msub>      <mi>SnI</mi>      <mn>3</mn>    </msub>  </mrow></math> investigated by inelastic x-ray scattering and comparison of their elastic properties

https://mdr.nims.go.jp/datasets/95038933-fd60-43b5-9223-fd609154bedb

## File

- [BL14561.pdf](https://mdr.nims.go.jp/filesets/eb621336-89cd-4790-bc97-adf2b5c52b1b/download) ([Detail](https://mdr.nims.go.jp/filesets/eb621336-89cd-4790-bc97-adf2b5c52b1b.md))

## Id

95038933-fd60-43b5-9223-fd609154bedb

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-09T08:06:43.210062Z

## Updated at

2024-08-09T23:30:26.264952Z

## Published at

2024-08-09T23:30:26.340702Z

## Doi

https://doi.org/10.48505/nims.4650

## First published url

https://doi.org/10.1103/physrevb.110.024301

## Date published

2024-07-01

## Recorded date published

2024-7

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Lattice dynamics of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>CH</mml:mi><mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:msub><mml:mi>NH</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mo>)</mml:mo></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>PbI</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
    and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>CH</mml:mi><mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:msub><mml:mi>NH</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mo>)</mml:mo></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>SnI</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
    investigated by inelastic x-ray scattering and comparison of their elastic properties
  title_type: original
  lang: en

## Description

- description: "Using the inelastic x-ray scattering (IXS) technique, we investigate
    the lattice dynamics of\r\ninorganic–organic hybrid iodide perovskites FAPbI3
    and FASnI3 (FA ≡ CH(NH2)2, formamidinium)\r\nin their cubic α phase and tetragonal
    β phase. We find that the IXS spectra of FASnI3 are highly\r\nbroad at all momentum
    points, as has been widely observed in the Pb-based halide perovskites. The speeds
    of sound (phonon group velocities) and absolute values of elastic constants of
    FASnI3 are smaller than those of FAPbI3 in both phases. In addition, no significant
    difference in the phonon lifetimes of FAPbI3 and FASnI3 is observed. These results
    correlate better with the reported ten-dency that the lattice thermal conductivity
    of ASnX3 is lower than that of APbX3. We discuss that our results also favor the
    up-conversion mechanism by acoustic phonons in the phonon bottleneck effect for
    the long lifetime of hot carriers."
  description_type: abstract
  lang: und

## Creator

- name: H. Tamatsukuri
  role: author
- name: Y. Murakami
  role: author
- name: N. Saito
  role: author
  orcid: https://orcid.org/0000-0002-8104-0172
  organization: National Institute for Materials Science
- name: N. Ohashi
  role: author
  orcid: https://orcid.org/0000-0002-4011-0031
  organization: National Institute for Materials Science
- name: S. Tsutsui
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: CH(NH2)2PbI3
  schema: not_defined
- subject: CH(NH2)2SnI3
  schema: not_defined
- subject: inelastic x-ray scattering
  schema: not_defined
- subject: phonon
  schema: not_defined

## Rights

- description: "©2024 American Physical Society"
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review B
  issn: '24699969'
  volume: '110'
  issue: '2'
  article_number: '024301'

## Conference



## Related item



## Funding

- identifier: JPMXP0112101001
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: 21K04646
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Process for specimen treatment



## Computational method



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## Fileset

- id: eb621336-89cd-4790-bc97-adf2b5c52b1b
  filename: BL14561.pdf
  content_type: application/pdf
  size: 1574557
  md5: 0eb95ea3b3aa6b7bfc55e31277862bc9

## Thumbnail

fileset_id: eb621336-89cd-4790-bc97-adf2b5c52b1b
filename: BL14561.pdf