Room temperature excitonic coupling in self-assembled copper - Fullerene hybrid films exposed to ambient air

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00587018" target="_blank" >RIV/61389005:_____/24:00587018 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/24:00587018

Result on the web

<a href="https://doi.org/10.1016/j.carbon.2024.119230" target="_blank" >https://doi.org/10.1016/j.carbon.2024.119230</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.carbon.2024.119230" target="_blank" >10.1016/j.carbon.2024.119230</a>

Result language

angličtina

Original language name

Room temperature excitonic coupling in self-assembled copper - Fullerene hybrid films exposed to ambient air

Original language description

Analytically sound combination of organic and inorganic semiconductors in designing functional hybrid nanomaterials promises new advances in nanoscience and in creation of next-generation optoelectronic devices. In this work, we report on combining two contrasting semiconductors (inorganic and organic) possessing attractive optical and electronic properties, namely Cu2O (in form of small single-crystalline nanoparticles, NPs) and C-60-fullerene (as a medium supporting the NP ensemble), which were formed within the well-controlled Cu-x(O-y)C-60 hybrid films through self-assembling and ambient air exposure of the vapour-deposited Cu and C-60 mixture. The controllability of the hybrid film nanostructure was established and verified through systematic study of the films using Rutherford backscattering spectrometry, transmission electron microscopy, X-ray diffraction, Raman spectrometry and spectroscopic ellipsometry. The remarkable coincidence of the optical absorption peaks around 3.5 eV, reported for the Wannier-Mott (WM) excitons in a Cu2O crystal and detected for the Frenkel (F) excitons in the pristine C-60 film, allowed us to observe room temperature polaritons as a product of the F-WM excitonic strong coupling. Quite high coupling energy of the FWM hybrid exciton estimated for the Cu-x(O-y)C-60 films in the x interval of 5 < x < 15 (from 390 meV to 610 meV) implies the mediated effect of nanocavity photons and quantum confinement effect, strongly enhancing the hybrid exciton coupling energy. The implemented study discloses the self-assembled Cu-x(O-y)C-60 hybrid films as promising material for application in optoelectronics and nonlinear optics.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Carbon

ISSN

0008-6223

e-ISSN

1873-3891

Volume of the periodical

226

Issue of the periodical within the volume

JUN

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

119230

UT code for WoS article

001243523700001

EID of the result in the Scopus database

2-s2.0-85192774291