Publication detail

Correlative Imaging of Individual CsPbBr3 Nanocrystals: Role of Isolated Grains in Photoluminescence of Perovskite Polycrystalline Thin Films

LIŠKA, P. MUSÁLEK, T. ŠAMOŘIL, T. KRATOCHVÍL, M. MATULA, R. HORÁK, M. NEDVĚD, M. URBAN, J. PLANER, J. ROVENSKÁ, K. DVOŘÁK, P. KOLÍBAL, M. KŘÁPEK, V. KALOUSEK, R. ŠIKOLA, T.

Original Title

Correlative Imaging of Individual CsPbBr3 Nanocrystals: Role of Isolated Grains in Photoluminescence of Perovskite Polycrystalline Thin Films

Type

journal article in Web of Science

Language

English

Original Abstract

We report on the optical properties of a CsPbBr3 polycrystallinethin film on a single grain level. A sample composed of isolated nanocrystals(NCs) mimicking the properties of the polycrystalline thin film grainsthat can be individually probed by photoluminescence spectroscopywas prepared. These NCs were analyzed using correlative microscopyallowing the examination of structural, chemical, and optical propertiesfrom identical sites. Our results show that the stoichiometry of theCsPbBr(3) NCs is uniform and independent of the NCs'morphology. The photoluminescence (PL) peak emission wavelength isslightly dependent on the dimensions of NCs, with a blue shift upto 9 nm for the smallest analyzed NCs. The magnitude of theblueshift is smaller than the emission line width, thus detectableonly by high-resolution PL mapping. By comparing the emission energiesobtained from the experiment and a rigorous effective mass model,we can fully attribute the observed variations to the size-dependentquantum confinement effect.

Keywords

TOTAL-ENERGY CALCULATIONS; QUANTUM CONFINEMENT; HALIDE PEROVSKITES; LUMINESCENT; EMISSION; SPECTRA; SIZE

Authors

LIŠKA, P.; MUSÁLEK, T.; ŠAMOŘIL, T.; KRATOCHVÍL, M.; MATULA, R.; HORÁK, M.; NEDVĚD, M.; URBAN, J.; PLANER, J.; ROVENSKÁ, K.; DVOŘÁK, P.; KOLÍBAL, M.; KŘÁPEK, V.; KALOUSEK, R.; ŠIKOLA, T.

Released

20. 6. 2023

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

1932-7447

Periodical

Journal of Physical Chemistry C (print)

Year of study

127

Number

25

State

United States of America

Pages from

12404

Pages to

12413

Pages count

10

URL

https://pubs.acs.org/doi/10.1021/acs.jpcc.3c03056

Full text in the Digital Library

http://hdl.handle.net/11012/213688

BibTex

@article{BUT184172,
  author="Petr {Liška} and Tomáš {Musálek} and Tomáš {Šamořil} and Matouš {Kratochvíl} and Radovan {Matula} and Michal {Horák} and Matěj {Nedvěd} and Jakub {Urban} and Jakub {Planer} and Katarína {Rovenská} and Petr {Dvořák} and Miroslav {Kolíbal} and Vlastimil {Křápek} and Radek {Kalousek} and Tomáš {Šikola}",
  title="Correlative Imaging of Individual CsPbBr3 Nanocrystals: Role of Isolated Grains in Photoluminescence of Perovskite Polycrystalline Thin Films",
  journal="Journal of Physical Chemistry C (print)",
  year="2023",
  volume="127",
  number="25",
  pages="12404--12413",
  doi="10.1021/acs.jpcc.3c03056",
  issn="1932-7447",
  url="https://pubs.acs.org/doi/10.1021/acs.jpcc.3c03056"
}