Highly Stretchable and Oriented Wafer-Scale Semiconductor Films for Organic Phototransistor Arrays

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(28), С. 36678 - 36687

Опубликована: Июль 5, 2024

Stretchable organic phototransistor arrays have potential applications in artificial visual systems due to their capacity perceive ultraweak light across a broad spectrum. Ensuring uniform mechanical and electrical performance of individual devices within these requires semiconductor films with large-area scale, well-defined orientation, stretchability. However, the progress stretchable phototransistors is primarily impeded by limited properties photodetection capabilities. Herein, wafer-scale well-oriented were successfully prepared using solution shearing process. The capabilities optimized improving polymer chain alignment. Furthermore, 10 × transistor array high device uniformity was fabricated, demonstrating excellent robustness photosensitive imaging ability. These based on highly great application field electronic eye systems.

Язык: Английский

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An acceptor-quantity modulation strategy for high-performance ambipolar semiconducting polymers: from a dual-acceptor to a quad-acceptor backbone

Journal of Materials Chemistry C, Год журнала: 2024, Номер 12(27), С. 10209 - 10217

Опубликована: Янв. 1, 2024

The triple-acceptor P2DPP-BT shows a deeper LUMO level and stronger π–π interaction, leading to the highest electron mobility of 1.1 cm 2 V −1 s in organic transistors.

Язык: Английский

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Molecular “backbone surgery” of electron-deficient heteroarenes based on dithienopyrrolobenzothiadiazole: conformation-dependent crystal structures and charge transport properties

Chemical Science, Год журнала: 2024, Номер 15(30), С. 11761 - 11774

Опубликована: Янв. 1, 2024

A conformation engineering strategy is proposed to manipulate the crystal structure of electron deficient heteroarenes for superior n-type organic semiconductors with an mobility 3.5 cm 2 V −1 s .

Язык: Английский

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Benzo[1,2-b:4,5-b′]dithiophenedimides as an Electron-Deficient Building Block for n-Type Polymer Semiconductors

Macromolecules, Год журнала: 2024, Номер 57(14), С. 6540 - 6547

Опубликована: Июль 11, 2024

The research on p-type polymer semiconductors has achieved significant progress in terms of material diversity and device performance, while the performance n-type lagged far behind. design synthesis electron-deficient building blocks are essential for development high-performance semiconductors. Herein, we report a new unit, 3,4,7,8-benzo[1,2-b:4,5-b′]dithiophenedimides (BDTI), its derivative dibromide BDTI, which further employed to construct BDTI-based donor–acceptor copolymers. These polymers show highly planar backbones deep lowest unoccupied molecular orbital (LUMO) levels (from −3.62 −3.95 eV), facilitate electron injection transport their thin films. highest mobility 0.25 cm2 V–1 s–1 was field-effect transistor (FET) using copolymer containing fluorinated bithiophene donor. This work demonstrates that BDTI is promising block constructing

Язык: Английский

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High‐Performance n‐Type Semiconducting Polymers via Synergistic Heteroannulated Acceptor Dimerization and Direct Arylation Polymerization

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 25, 2025

Abstract Developing unipolar n‐type semiconducting polymers with electron mobility ( µ e ) exceeding 10 cm 2 V −1 s presents a significant challenge in organic electronics. In response to this challenge, novel molecular architecture‐tailoring approach known as the heteroannulated acceptor dimerization strategy is introduced. Through theoretical framework that integrates heteroatom substitution and based on parent hexylthiophene‐flanked benzothiadiazole, our establishes modulate frontier orbital (FMO) levels while enhancing planarity. The removal of alkyl side chains flanking thiophene units leads more planar polymer backbone, evidenced by dihedral angles 0°. prediction deeper FMO oxadiazole‐containing experimentally validated, demonstrating efficacy design principles. Using strategy, new copolymers are synthesized via modified palladium/copper co‐catalyzed direct arylation polymerization protocol 10‐gram scale. Compared its hexylthiophene‐counterpart pN‐BBOE‐C6, pN‐BBOE‐H exhibits exceptional structural electronic properties, including π–π stacking distance 3.5 Å 11.2 , among highest for polymers. This work not only advances understanding materials but also provides robust designing high‐performance

Язык: Английский

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Synthesis of Thienoacenes via Cascade Copper-Catalyzed C–S Coupling and Thienannulation Reactions and Their Thermoelectric Properties

The Journal of Organic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 23, 2025

Thienoacenes are a prominent class of fused-ring conjugated organic compounds and have attracted considerable attention due to their high coplanarity, good stability, charge-carrier mobility, etc. However, most current synthetic methods toward thienoacenes require costly starting materials reagents, as well lengthy procedure with low overall yields. Herein, nonprecious copper-catalyzed system without additional ligands was developed facilitate C-S coupling 5-endo-dig thienannulation reaction, leading the synthesis range including dithieno[3,2-b:2',3'-d]thiophenes (DTTs) thieno[2',3':4,5]thieno[3,2-b]thiophene[2,3-d]thiophene (TTAs) yields up 90% (for single-sided reactions) 65% double-sided reactions). In addition, three π-extended DTTs were studied potential thermoelectric materials, composites single-walled carbon nanotubes (SWCNTs) exhibited performance power factor 399.01 ± 16.26 μW m-1 K-2 at room temperature, which is highest reported for comprising small-molecule thiophene derivatives SWCNTs, signifying step forward in development high-performance based on derivatives.

Язык: Английский

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Naphtho[2,3-b]thiophene diimide-terminated acceptor triads for improved n-type organic semiconductors

Science China Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 27, 2025

Язык: Английский

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Elucidating the effects of the sidechain substitution direction on the optoelectronic properties of isomeric diketopyrrolopyrrole-based conjugated polymers for near-infrared organic phototransistors

Journal of Materials Chemistry C, Год журнала: 2023, Номер 12(2), С. 489 - 497

Опубликована: Дек. 1, 2023

Compared to P3BT-out, P3BT-in with sidechains in the inner way has better molecular planarity, narrower bandgap, and stronger light absorption ability, resulting an increased electron mobility higher near-infrared photoresponsivity.

Язык: Английский

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Quinoidal-Diketopyrrolopyrrole-Based Low-Bandgap n-Type Conjugated Polymers via Direct Arylation Polycondensation: Chalcogen Effects on Structures and Properties

Macromolecules, Год журнала: 2024, Номер 57(19), С. 9006 - 9016

Опубликована: Сен. 24, 2024

Язык: Английский

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Boosted hydrogen evolution in conjugated polymer photocatalyst by noncovalent conformation-locked architecture

Journal of Catalysis, Год журнала: 2024, Номер 436, С. 115615 - 115615

Опубликована: Июнь 19, 2024

Язык: Английский

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