Repozitorij Univerze v Novi Gorici

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Naslov:High charge carrier mobility in thin films of quasi-two-dimensional polyacetylenes with sulphuric inter-chain linkers
Avtorji:ID Pastukhova, Nadiia (Avtor)
ID Bratina, Gvido (Avtor)
ID Pavlica, Egon (Avtor), et al.
Datoteke:URL https://www5.shocklogic.com/scripts/jmevent/programme.php?Client_Id=%27KONGRESS%27&Project_Id=%27GW2023%27&System_Id=1
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.12 - Objavljeni povzetek znanstvenega prispevka na konferenci
Organizacija:UNG - Univerza v Novi Gorici
Opis:Quasi-two-dimensional conjugated polymers (q2DCP) have been described and recognised as crystalline, one- or two-layer polymer nanosheets prepared by arranging linear conjugated polymer chains in a 2D plane via non-covalent interchain interactions.[1,2] The extension of polymer dimensionality to two dimensions improves the alignment of individual polymer layers and overcomes the limitations associated with charge carrier hopping between polymer chains in one-dimensional and crosslinked polymers [3] Compared to other two-dimensional materials such as graphene or transition metal dichalcogenides, q2DCPs offer a high degree of flexibility in chemical design and are compatible with liquid-based processing methods. Various q2DCPs have been synthesized by surface active monolayer-assisted interfacial synthesis (SMAIS) [5] The photoreaction of these materials is of particular interest due to their tunable properties such as band gap and associated wavelength-dependent photoexcitation, which enables a wide range of applications in optoelectronic devices. Using time-of-flight photoconductivity measurements (TOF-PC) [4], we investigate the charge transport properties of 2D polyacetylene prepared by the SMAIS method. A typical TOFP measurement of q2D polyacetylene is shown in Figure 1, using a focused nanosecond pulse laser at 325 nm and an electrode spacing of 250 µm. From the polarity of the bias voltage and the duration of the photocurrent, we can determine the polarity, velocity, and mobility of the photo-excited carriers as a function of the applied bias voltage and excitation wavelength. and observed electron mobility of 250 cm2/Vs, which is in the range of the most advanced organic single-crystal small-molecule semiconductors and almost an order of magnitude higher than linear polymeric semiconductors. We investigated the optical absorption and transmission on a lateral scale using scanning near-field optical microscopy (SNOM).
Ključne besede:2D polymers, organic semiconductors, q2DPA, SNOM, time-of-flight photoconductivity
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Leto izida:2023
Št. strani:1 str.
PID:20.500.12556/RUNG-8950 Novo okno
COBISS.SI-ID:190139651 Novo okno
UDK:53
NUK URN:URN:SI:UNG:REP:L7CQB8XJ
Datum objave v RUNG:25.03.2024
Število ogledov:238
Število prenosov:1
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del monografije

Naslov:Graphene Week : 4.-8. Sep. 2023, Gothenburg, Sweden
Kraj izida:[S. l.
Založnik:s. n.
Leto izida:2023
COBISS.SI-ID:190136579 Novo okno

Gradivo je financirano iz projekta

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:Z1-3189
Naslov:Transportne lastnosti dvodimenzionalnih konjugiranih polimerov

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