, volume 1 , issue 1 , pages 8-13

Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films

Rebecca A. Scheidt ¹

Corey Atwell ¹

Prashant V Kamat ¹

Hide authors affiliations Show authors affiliations: 1 affiliation

Radiation Laboratory and Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States |

Publication type: Journal Article

Publication date: 2019-03-12

American Chemical Society (ACS)

ACS Materials Letters

scimago Q1

wos Q1

SJR: 2.655

CiteScore: 12.5

Impact factor: 8.7

ISSN: 26394979

DOI: 10.1021/acsmaterialslett.9b00001

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General Chemical Engineering

General Materials Science

Biomedical Engineering

Abstract

The control of grain size and surface properties is an important parameter in controlling the optoelectronic and photovoltaic properties of metal halide perovskites. When CsPbBr3 nanocrystal (∼10 nm in diameter) films were annealed at 100–125 °C, they grow in size to produce ∼400 nm diameter crystallites while transforming into bulk perovskite films. Characteristic changes in the optical properties were noted when such transformation occurred from nanocrystals into bulk. By tracking absorbance and emission spectra and morphological changes of CsPbBr3 films at different annealing times and temperature, we were able to establish the mechanism of particle growth. The presence of nanocrystals and larger crystals during the intermediate annealing steps and narrowing size distribution confirmed the Ostwald ripening mechanism for the crystal growth. The energy of activation of crystal growth as determined from the temperature dependent optical properties was estimated to be 75 kcal/mol.

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Scheidt R. A., Atwell C., Kamat P. V. Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films // ACS Materials Letters. 2019. Vol. 1. No. 1. pp. 8-13.

GOST all authors (up to 50) Copy

Scheidt R. A., Atwell C., Kamat P. V. Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films // ACS Materials Letters. 2019. Vol. 1. No. 1. pp. 8-13.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1021/acsmaterialslett.9b00001

UR - https://doi.org/10.1021/acsmaterialslett.9b00001

TI - Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films

T2 - ACS Materials Letters

AU - Scheidt, Rebecca A.

AU - Atwell, Corey

AU - Kamat, Prashant V

PY - 2019

DA - 2019/03/12

PB - American Chemical Society (ACS)

SP - 8-13

IS - 1

VL - 1

SN - 2639-4979

ER -

BibTex |

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BibTex (up to 50 authors) Copy

@article{2019_Scheidt,

author = {Rebecca A. Scheidt and Corey Atwell and Prashant V Kamat},

title = {Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films},

journal = {ACS Materials Letters},

year = {2019},

volume = {1},

publisher = {American Chemical Society (ACS)},

month = {mar},

url = {https://doi.org/10.1021/acsmaterialslett.9b00001},

number = {1},

pages = {8--13},

doi = {10.1021/acsmaterialslett.9b00001}

}

MLA

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MLA Copy

Scheidt, Rebecca A., et al. “Tracking Transformative Transitions: From CsPbBr3 Nanocrystals to Bulk Perovskite Films.” ACS Materials Letters, vol. 1, no. 1, Mar. 2019, pp. 8-13. https://doi.org/10.1021/acsmaterialslett.9b00001.

Publisher

American Chemical Society (ACS)

Journal

ACS Materials Letters

scimago Q1

wos Q1

SJR

2.655

CiteScore

12.5

Impact factor

8.7

ISSN

26394979 (Print, Electronic)

Profiles

Prashant V Kamat