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Naslov:Modulation of charge transfer exciton dynamics in organic semiconductors using different structural arrangements
Avtorji:ID Soncini, Cristian (Avtor)
ID Kumar, Abhishek (Avtor)
ID Bondino, Federica (Avtor)
ID Magnano, Elena (Avtor)
ID Stupar, Matija (Avtor)
ID Ressel, Barbara (Avtor)
ID De Ninno, Giovanni (Avtor)
ID Papadopoulos, Antonis (Avtor)
ID Serpetzoglou, Efthymis (Avtor)
ID Stratakis, Emmanuel (Avtor)
ID Pedio, Maddalena (Avtor)
Datoteke:URL https://pubs.rsc.org/en/content/articlepdf/2023/tc/d3tc00734k
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:In devices based on organic semiconductors, aggregation and inter-molecular interactions play a key role in affecting the photo-physical and dynamical carrier properties of the material, potentially becoming a limiting factor to achieving high efficiency. As a consequence, a detailed understanding of the interplay between the film molecular structure and the material properties is essential to properly design devices with optimized performance. Here we demonstrate how different molecular structural arrangements modulate the charge transfer (CT) dynamics in cobalt phthalocyanine (CoPc) thin films. By transient absorption spectroscopy and time-resolved photoemission spectroscopy, we study the influence of different CoPc structures on the dynamical electronic properties, the CoPc intra and inter- molecular de-excitation pathways up to 7 ns. We rationalize the ultrafast formation of triplet states in the CoPc through an electron exchange process between the single-occupied Co3dz2 orbital and p orbitals of the macrocycle, which obviate for an energetically unfavourable spin-flip. We found enhanced CT exciton lifetime in the case of the herringbone structure with respect to the brickwork one, possibly explainable by a more efficient CT exciton delocalization along the stacking axis.
Ključne besede:charge transfer, organic molecules, time resolved spectroscopies
Datum objave:01.01.2023
Leto izida:2023
Št. strani:str. 10266-10273
Številčenje:Vol. 11, issue 30
PID:20.500.12556/RUNG-8278-a567ec85-0b81-7de5-262c-f4175d8f67e7 Novo okno
COBISS.SI-ID:157361923 Novo okno
UDK:620.1/.2
ISSN pri članku:2050-7526
DOI:10.1039/D3TC00734K Novo okno
NUK URN:URN:SI:UNG:REP:FLFLYULF
Datum objave v RUNG:30.06.2023
Število ogledov:2901
Število prenosov:9
Metapodatki:XML DC-XML DC-RDF
:
SONCINI, Cristian, KUMAR, Abhishek, BONDINO, Federica, MAGNANO, Elena, STUPAR, Matija, RESSEL, Barbara, DE NINNO, Giovanni, PAPADOPOULOS, Antonis, SERPETZOGLOU, Efthymis, STRATAKIS, Emmanuel in PEDIO, Maddalena, 2023, Modulation of charge transfer exciton dynamics in organic semiconductors using different structural arrangements. Journal of materials chemistry. Materials for optical and electronic devices [na spletu]. 2023. Vol. 11, no. 30, p. 10266–10273. [Dostopano 11 april 2025]. DOI 10.1039/D3TC00734K. Pridobljeno s: https://pubs.rsc.org/en/content/articlepdf/2023/tc/d3tc00734k
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Gradivo je del revije

Naslov:Journal of materials chemistry. Materials for optical and electronic devices
Skrajšan naslov:J. mater. chem. C
Založnik:RSC Publications
ISSN:2050-7526
COBISS.SI-ID:16529430 Novo okno

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