Interface Collaborative Strategy for High Mobility Organic Single‐Crystal Field‐Effect Transistors with Ideal Current–Voltage Curves DOI

Jianzhou Ren,

Bokun Rong,

Lei Zheng

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 27, 2024

Abstract The key roles of electrode/semiconductor and semiconductor/dielectric interfaces play in the ideality organic field‐effect transistors (OFETs) by traditional device preparation technologies are not yet fully understood, which severely limits progress design molecules, understanding transport mechanisms, circuit applications OFETs. Herein, at a quantitative level, origin nonideal current–voltage ( I– V ) curves possibly overestimated mobility single‐crystal OFETs is revealed, including contact resistance R c ), charge trapping, scattering devices. Impressively, an efficient interface collaborative strategy, consists transferred “doped” electrodes with tunable “doping” localized regions source‐drain contacts polymer‐modified SiO 2 suitable surface polarity γ s p further demonstrated that have great advantages construction ideal high Also, interesting double‐edged sword effect dielectric on observed. lower can result higher mobility, while too low would degrade due to significant scattering. findings only provide new perspectives strategies construct but also offer useful guidance correctly evaluate semiconductor materials.

Language: Английский

Charge Polarity Modulation and Efficient Electron Transport in Quinoid–Donor–Acceptor Polymers by Acceptor Engineering for High-Performance Transistors DOI

Hao Chen,

Runze Xie,

Junwang Tang

et al.

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Fine-tuning the charge polarity and enhancing electron transport in conjugated polymers are critical for developing high-performance organic field-effect transistors (OFETs). Quinoidal polymers, characterized by planar backbones deep-lying lowest unoccupied molecular orbital (LUMO) energy levels, offer distinct advantages over their aromatic counterparts but face challenges achieving reliable mobilities exceeding 1 cm2 V–1 s–1. Herein, we synthesized a set of novel quinoid–donor–acceptor (Q-D-A) with various acceptor units. Increasing strength narrowed band gap, lowered LUMO shifted from unipolar p-type to ambipolar ultimately dominant n-type behavior. The electron-to-hole mobility ratio increased 0 40 behavior observed Q-D-A polymer first time. Consequently, strongest acceptor-based exhibited backbone, small effective mass, high crystallinity, low disorder, resulting 1.20 s–1 decent operational stability. This is record-high value quinoidal transport. Our findings viable strategy tuning improving providing insights into structure–property relationships essential advancing electronics.

Language: Английский

Citations

1
Recent developments in polymer semiconductors with excellent electron transport performances DOI
Yunchao Zhang, Weifeng Zhang, Zhihui Chen

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review describes the design considerations, bonding modes between monomers, structural modification strategies, and applications of polymer semiconductors with excellent electron transport performances.

Language: Английский

Citations

1
A High‐Mobility n‐Type Noncovalently‐Fused‐Ring Polymer for High‐Performance Organic Thermoelectrics DOI

Tao Shen,

Di Liu, Jianqi Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(35)

Published: June 10, 2024

Conjugated polymers are emerging as competitive candidates for organic thermoelectrics (OTEs). However, to make the device truly pervasive, both p- and n-type conjugated essential. Despite great efforts, no equivalents p-type benchmark PEDOT:PSS exist date mainly due low electrical conductivity (σ). Herein, a near-amorphous polymer, namely pDFSe, is reported with high σ by achieving synergy between charge transport doping efficiency. The polymer pDFSe synthesized based on an acceptor-triad moiety of diketopyrrolopyrrole-difluorobenzoselenadiazole-diketopyrrolopyrrole (DFSe), which has noncovalently-fused-ring structure reinforce backbone rigidity. Furthermore, axisymmetric thiophene-selenophene-thiophene donor introduced, enables formation microstructures. above merits ensure good efficiency without scarifying efficient intrachain charge-carrier transport. Thus, pDFSe-based transistors exhibit electron mobility up 6.15 cm

Language: Английский

Citations

6
Rational Molecular Design of Diketopyrrolopyrrole‐Based n‐Type and Ambipolar Polymer Semiconductors DOI
Tao Shen, Zhen Jiang, Yang Wang

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(47)

Published: July 31, 2024

Abstract Diketopyrrolopyrrole (DPP)‐based polymer semiconductors have drawn great attention in the field of organic electronics due to planar structure, decent solubilizing capability, and high crystallinity. However, electron‐deficient capacity DPP derivatives are not strong enough, leading relatively high‐lying lowest unoccupied molecular orbital (LUMO) energy levels corresponding polymers. As a result, n‐type ambipolar DPP‐based polymers rare their electron mobilities also lag far behind p‐type counterparts, which limits development important p‐n‐junction‐based electronic devices. Therefore, new design strategies been proposed recent years develop n‐type/ambipolar with improved performances. In this view, these summarized, including copolymerization different acceptors weak donors, flanked aromatic ring modification, DPP‐core expansion dimerization. The relationship between chemical structures thin‐film transistor performances is intensively discussed. Finally, perspective on future trends proposed.

Language: Английский

Citations

4
N‐oxide‐Functionalized Bipyridines as Strong Electron‐Deficient Units to Construct High‐Performance n‐Type Conjugated Polymers DOI Creative Commons
Mingwei Li, Wenhao Li,

Junkang Zhou

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Abstract Developing low‐cost unipolar n‐type organic thin‐film transistors (OTFTs) is necessary for logic circuits. To achieve this objective, the usage of new electron‐deficient building blocks with simple structure and easy synthetic route desirable. Among all units, N ‐oxide‐functionalized bipyridines can be prepared through a oxidized transformation bipyridines. However, employing as unit to construct efficient N‐type polymers has been overlooked. This gap strongly encourages us design synthesize two ‐oxide blocks, 5,5'‐dibromo‐[2,2'‐bipyridine] 1‐oxide (BPyO) 1,1'‐dioxide (BPyDO), oxidation sp 2 ‐ in 2,2ʹ‐bipyridine. The single‐crystal X‐ray diffraction shows that BPyO BPyDO possess planar strong π‐stacking, which beneficial charge transport. Incorporation these into acceptor–acceptor backbones leads polymers, namely P(DPP‐BPyO) P(DPP‐BPyDO). Both P(DPP‐BPyDO) lower frontier molecular orbital energy levels than non‐oxide polymer P(DPP‐BPy). Consequently, transition from P(DPP‐BPy) (without oxide group) (mono‐oxide then (dioxide decrease hole‐transport performance gradually switch transport nature p‐type via ambipolar. These results prove introduction groups units would promising strategy approach high‐performance polymers.

Language: Английский

Citations

0
High‐Performance n‐Type Semiconducting Polymers via Synergistic Heteroannulated Acceptor Dimerization and Direct Arylation Polymerization DOI Open Access
Di Liu,

Ying‐Han Zhao,

Shaojie Chen

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 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

Language: Английский

Citations

0
Naphtho[2,3-b]thiophene diimide-terminated acceptor triads for improved n-type organic semiconductors DOI

Shuixin Zhang,

Zeng Wu,

Di Liu

et al.

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 27, 2025

Language: Английский

Citations

0
An acceptor-quantity modulation strategy for high-performance ambipolar semiconducting polymers: from a dual-acceptor to a quad-acceptor backbone DOI

K.L. Jiao,

Xiaochan Zuo,

Tao Shen

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(27), P. 10209 - 10217

Published: Jan. 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.

Language: Английский

Citations

3
Ultra‐Low Threshold Voltage in N‐Type Organic Electrochemical Transistors Enabled by Organic Mixed Ionic‐Electronic Conductors with Dual Electron‐Withdrawing Substitutions DOI Open Access

Riqing Ding,

Xiage Zhang, Ran Yan

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 28, 2024

Abstract Achieving low threshold voltage ( V th ) in organic electrochemical transistors (OECTs) is essential for minimizing power consumption and enhancing sensitivity bioelectronic devices. However, obtaining OECT materials with ultra‐low , close to 0 n‐type conjugated polymers remains challenging. Here, a polymer FBDOPV‐CNTVT introduced, which features rigid backbone structure high electron deficiency, leading an exceptionally lowest unoccupied molecular orbital (LUMO) energy level of −4.67 eV, achieved through dual electron‐withdrawing substitutions. With its LUMO level, exhibits susceptibility doping, even demonstrating efficient doping near V. Consequently, the device employing as active material shows 7.5 mV, setting new record Furthermore, µC * value 6.13 F cm −1 s retains ≈85% current after 2000 cycling. This study highlights potential substitutions achieve levels, effectively reducing devices promising advancements bioelectronics.

Language: Английский

Citations

1
Molecular “backbone surgery” of electron-deficient heteroarenes based on dithienopyrrolobenzothiadiazole: conformation-dependent crystal structures and charge transport properties DOI Creative Commons
Yuzhong Chen,

Zeng Wu,

Zekun Chen

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(30), P. 11761 - 11774

Published: Jan. 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 .

Language: Английский

Citations

0