Publication detail

4D-STEM in an FIB-SEM: A Proper Tool to Characterize Perovskite Single-Photon Emitters and Solar Cells

BAJO, V. KLOK, P. LIŠKA, P. KOLOŠOVÁ, J. MOTÚZ, R. JURAČKA, J. GAVRANOVIĆ, S. ZMEŠKAL, O. KRÁL, J. STEJSKAL, P. JIRUŠE, J. ŠIKOLA, T. HORÁK, M.

Original Title

Type

journal article in Web of Science

Language

English

Original Abstract

Four-dimensional scanning transmission electron microscopy (4D-STEM) is a characterization technique that allows high-resolution imaging of thin samples while providing structural and crystallographic information. We have developed a 4D-STEM solution for scanning electron microscopes, enabling lamella fabrication and analysis without exposing the lamella to air. This technique has been used to analyze emerging materials, including low-dimensional lead halide perovskites and perovskite solar cells. We resolved individual CsPbBr3 nanocrystals, determined their lattice constant, and mapped their crystallographic orientation, locating well-ordered superlattice ensembles for single-photon emission. In perovskite solar cells, we observed a nondegenerate tetragonal MAPbI3 photoactive layer and documented the amorphization and subsequent degradation of the MA3Bi2I9 photoactive layer when exposed to air. Our findings facilitate the identification and characterization of lead halide perovskite nanocrystal ensembles and perovskite photoactive layers, thereby reducing the time required for these processes. This efficiency is generally valuable for large-scale production and quality control of materials manufactured on an industrial scale.

Keywords

HALIDE PEROVSKITES; ELECTRON; NANOCRYSTALS; ABSORPTION; STABILITY; EMISSION

Authors

BAJO, V.; KLOK, P.; LIŠKA, P.; KOLOŠOVÁ, J.; MOTÚZ, R.; JURAČKA, J.; GAVRANOVIĆ, S.; ZMEŠKAL, O.; KRÁL, J.; STEJSKAL, P.; JIRUŠE, J.; ŠIKOLA, T.; HORÁK, M.

Released

6. 2. 2025

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

1932-7455

Periodical

Journal of Physical Chemistry C (web)

Year of study

129

Number

State

United States of America

Pages from

3905

Pages to

3912

Pages count

URL

https://pubs.acs.org/doi/10.1021/acs.jpcc.4c08042

BibTex

@article{BUT197775,
  author="BAJO, V. and KLOK, P. and LIŠKA, P. and KOLOŠOVÁ, J. and MOTÚZ, R. and JURAČKA, J. and GAVRANOVIĆ, S. and ZMEŠKAL, O. and KRÁL, J. and STEJSKAL, P. and JIRUŠE, J. and ŠIKOLA, T. and HORÁK, M.",
  title="4D-STEM in an FIB-SEM: A Proper Tool to Characterize Perovskite Single-Photon Emitters and Solar Cells",
  journal="Journal of Physical Chemistry C (web)",
  year="2025",
  volume="129",
  number="7",
  pages="3905--3912",
  doi="10.1021/acs.jpcc.4c08042",
  issn="1932-7455",
  url="https://pubs.acs.org/doi/10.1021/acs.jpcc.4c08042"
}