Dithienylnaphthalenes and quaterthiophenes substituted with electron-withdrawing groups as n-type organic semiconductors for organic field-effect transistors

Feriancová, Lucia; Cigáň, Marek; Kožı́šek, Jozef; Gmucová, Katarína; Nádaždy, Vojtěch; Dubaj, Tibor; Sobota, Michał; Novota, Miroslav; Weis, Martin; Putala, Martin

doi:10.1039/d2tc01238c

Cited by 5 publications

(2 citation statements)

References 74 publications

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“…The primary determinants for enhancing the performance of organic semiconductors are the charge transport mobility (µ), threshold voltage (V th ), and current on/off ratio (I on/off ). In these factors, charge transport is the pivotal element driving the performance of OFETs [33][34][35][36][37]. Therefore, the selection of appropriate molecular design strategies is critical for enhancing the properties of the organic semiconductor layer and manufacturing high-performance OFETs.…”

Section: Introductionmentioning

confidence: 99%

Molecular Design Concept for Enhancement Charge Carrier Mobility in OFETs: A Review

Zhou,

Zhang,

Chen

et al. 2023

Materials

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In the last two decades, organic field-effect transistors (OFETs) have garnered increasing attention from the scientific and industrial communities. The performance of OFETs can be evaluated based on three factors: the charge transport mobility (μ), threshold voltage (Vth), and current on/off ratio (Ion/off). To enhance μ, numerous studies have concentrated on optimizing charge transport within the semiconductor layer. These efforts include: (i) extending π-conjugation, enhancing molecular planarity, and optimizing donor–acceptor structures to improve charge transport within individual molecules; and (ii) promoting strong aggregation, achieving well-ordered structures, and reducing molecular distances to enhance charge transport between molecules. In order to obtain a high charge transport mobility, the charge injection from the electrodes into the semiconductor layer is also important. Since a suitable frontier molecular orbitals’ level could align with the work function of the electrodes, in turn forming an Ohmic contact at the interface. OFETs are classified into p-type (hole transport), n-type (electron transport), and ambipolar-type (both hole and electron transport) based on their charge transport characteristics. As of now, the majority of reported conjugated materials are of the p-type semiconductor category, with research on n-type or ambipolar conjugated materials lagging significantly behind. This review introduces the molecular design concept for enhancing charge carrier mobility, addressing both within the semiconductor layer and charge injection aspects. Additionally, the process of designing or converting the semiconductor type is summarized. Lastly, this review discusses potential trends in evolution and challenges and provides an outlook; the ultimate objective is to outline a theoretical framework for designing high-performance organic semiconductors that can advance the development of OFET applications.

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Section: Introductionmentioning

confidence: 99%

Molecular Design Concept for Enhancement Charge Carrier Mobility in OFETs: A Review

Zhou,

Zhang,

Chen

et al. 2023

Materials

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“…π-conjugation extension and good planar structures are not only effective for intra-charge transport, but also benefit molecular packing and π-π overlap ( Devibala et al, 2021 ; Feriancová et al, 2022 ). A new small molecule, based on π-expanded fused DPP, namely, FDPP, received our attention ( Grzybowski et al, 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Design, synthesis, and application in OFET of a small molecule based on π-expanded fused diketopyrrolopyrrole

Li,

Ji,

et al. 2023

Front. Chem.

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Diketopyrrolopyrrole (DPP) and its derivatives, as electron deficient units, are widely used as building blocks in organic field-effect transistors, obtaining high performance. However, further modification of the DPP structure is crucial for the development of organic semiconductors. In this work, an FDPP is synthesized and characterized. The results show that FDPP exhibited not only a good planar core structure with a good conjugation system, but also strong aggregation in the solid state. As a consequence, FDPP presents p-type behavior with a hole mobility of ∼9.7 × 10−3 cm2 V−1 s−1. This study suggests that FDPP is a promising electron deficient unit for high performance semiconductors.

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Analysis of structural defect states in thin films of small-molecular organic semiconductors using complex impedance data and DFT

Gmucová,

Konôpka,

Feriancová

et al. 2024

AIP Conference Proceedings

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Dithienylnaphthalenes and quaterthiophenes substituted with electron-withdrawing groups as n-type organic semiconductors for organic field-effect transistors

Abstract: We hereby report a successful design strategy for n-type semiconductor materials based on an analogy with efficient p-type semiconductors, by introducing electron-withdrawing groups while maintaining the symmetry of the molecules...

Cited by 5 publications

References 74 publications

Molecular Design Concept for Enhancement Charge Carrier Mobility in OFETs: A Review

Molecular Design Concept for Enhancement Charge Carrier Mobility in OFETs: A Review

Design, synthesis, and application in OFET of a small molecule based on π-expanded fused diketopyrrolopyrrole

Analysis of structural defect states in thin films of small-molecular organic semiconductors using complex impedance data and DFT

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