Detail publikace
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.
Anglický název
Correlative Imaging of Individual CsPbBr3 Nanocrystals: Role of Isolated Grains in Photoluminescence of Perovskite Polycrystalline Thin Films
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
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.
Anglický abstrakt
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.
Klíčová slova anglicky
TOTAL-ENERGY CALCULATIONS; QUANTUM CONFINEMENT; HALIDE PEROVSKITES; LUMINESCENT; EMISSION; SPECTRA; SIZE
Vydáno
20.06.2023
Nakladatel
AMER CHEMICAL SOC
Místo
WASHINGTON
ISSN
1932-7447
Ročník
127
Číslo
25
Strany od–do
12404–12413
Počet stran
10
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 {Viewegh} 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",
year="2023",
volume="127",
number="25",
month="June",
pages="12404--12413",
publisher="AMER CHEMICAL SOC",
address="WASHINGTON",
issn="1932-7447"
}