Rapid Meniscus‐Assisted Solution‐Printing of Conjugated Block Copolymers for Field‐Effect Transistors (Adv. Funct. Mater. 14/2022)

Yin, Yun; Zhu, Shuyin; Chen, Shuwen; Lin, Zhiqun; Peng, Juan

doi:10.1002/adfm.202270083

Cited by 4 publications

(8 citation statements)

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“…adopted a robust FESA method to prepare π‐conjugated polymer stripe arrays with varying periodic structures. [ 136 ] The study verified that higher mobility was achieved when more secondary stripes were introduced in the resulting OFETs, leading to the highest charge mobility of 7.91 × 10 −3 cm 2 V −1 s −1 . The introduction of more stripes created additional interconnections within the charge transport channel, thus improving device performance.…”

Section: Applicationsmentioning

confidence: 68%

Microstructures Formation through Liquid‐Assisted Assembly of Functional Materials for High‐Performance Electronics

Xu,

Wang,

Song

et al. 2023

Adv Funct Materials

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The assembly of functional materials into microstructures, which extends unique features such as enlarged specific surface areas, effective conduction paths, higher material utilization ratios, and ordered alignment compared to continuous films, has gained prominence in various fields. Achieving high performance in electronics requires cooperation among building blocks, fabrication methods, and device design. However, the remaining challenge is obtaining highly regular and large‐scale patterns with controllable assembly methods while maximizing device performances. Manipulating functional materials with liquid assistance is a feasible approach to realizing controllable dewetting, regular molecule packing, and customized performances. This review focuses on the recent advances in preparing and applying liquid‐induced microstructures. The predominant preparation technologies are summarized, including flow‐enabled assembly, nanoimprint lithography, and capillary‐bridge‐mediated assembly. Furthermore, diverse applications of various microstructure‐based electronics, such as flexible and transparent electrodes, organic field‐effect transistors, gas sensors, photodetectors, and solar cells, are demonstrated.

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Section: Applicationsmentioning

confidence: 68%

Microstructures Formation through Liquid‐Assisted Assembly of Functional Materials for High‐Performance Electronics

Xu,

Wang,

Song

et al. 2023

Adv Funct Materials

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“…The solution‐shearing method allows for the aligned growth of semiconductor crystals by controlling various processing parameters such as shearing speed, substrate temperature, solvent choice, and semiconductor concentration. [ 79–82 ] This method enables the formation of an optimized film with well‐aligned structures under the influence of the shearing force. It is worth noting that DSpDSTQ derivatives exhibit great solubility in ortho‐dichlorobenzene ( o ‐DCB), making them suitable for solution processing.…”

Section: Resultsmentioning

confidence: 99%

Diselenophene‐Dithioalkylthiophene Based Quinoidal Small Molecules for Ambipolar Organic Field Effect Transistors

Velusamy,

Chen,

Lin

et al. 2023

Advanced Science

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This work presents a series of novel quinoidal organic semiconductors based on diselenophene‐dithioalkylthiophene (DSpDST) conjugated cores with various side‐chain lengths (‐thiohexyl, ‐thiodecyl, and ‐thiotetradecyl, designated DSpDSTQ‐6, DSpDSTQ‐10, and DSpDSTQ‐14, respectively). The purpose of this research is to develop solution‐processable organic semiconductors using dicyanomethylene end‐capped organic small molecules for organic field effect transistors (OFETs) application. The physical, electrochemical, and electrical properties of these new DSpDSTQs are systematically studied, along with their performance in OFETs and thin film morphologies. Additionally, the molecular structures of DSpDSTQ are determined through density functional theory (DFT) calculations and single‐crystal X‐ray diffraction analysis. The results reveal the presence of intramolecular S (alkyl)···Se (selenophene) interactions, which result in a planar SR‐containing DSpDSTQ core, thereby promoting extended π‐orbital interactions and efficient charge transport in the OFETs. Moreover, the influence of thioalkyl side chain length on surface morphologies and microstructures is investigated. Remarkably, the compound with the shortest thioalkyl chain, DSpDSTQ‐6, demonstrates ambipolar carrier transport with the highest electron and hole mobilities of 0.334 and 0.463 cm2 V−1 s−1, respectively. These findings highlight the excellence of ambipolar characteristics of solution‐processable OFETs based on DSpDSTQs even under ambient conditions.

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“…Compared to inorganic counterparts, one significant advantage of organic materials is their solution processing capability, which offers the potential for scalable, energy-efficient, and low-carbonfootprint deposition of organic single crystals using printing processing. [8][9][10][11][12][13] Among various kinds of printing techniques, the meniscus-guided printing method is considered as the most promising technology for the growth of organic single-crystal films (OSCFs) because it not only enables continuous and large-area fabrication but also confers uniform crystalline orientation. [12,[14][15][16][17] Recently, meniscus-guided printing has made great progress in yielding organic semiconductor films with single-crystalline domains.…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10][11][12][13] Among various kinds of printing techniques, the meniscus-guided printing method is considered as the most promising technology for the growth of organic single-crystal films (OSCFs) because it not only enables continuous and large-area fabrication but also confers uniform crystalline orientation. [12,[14][15][16][17] Recently, meniscus-guided printing has made great progress in yielding organic semiconductor films with single-crystalline domains. [12] However, these singlecrystalline domains are usually grown in a manner of parallel ribbon-like and branched morphology, [18][19][20][21][22][23][24][25][26][27][28] giving rise to abundant structural defects (cracks, voids, and unordered orientation) transverse to the printing direction that restrain the formation of the intact films over a large area.…”

Section: Introductionmentioning

confidence: 99%

Breaking Fundamental Limitation of Flow‐Induced Anisotropic Growth for Large‐Scale and Fast Printing of Organic Single‐Crystal Films

Sheng,

Deng,

Ren

et al. 2024

Advanced Materials

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Advanced organic electronic technologies have put forward a pressing demand for cost‐effective and high‐throughput fabrication of organic single‐crystal films (OSCFs). However, solution‐printed OSCFs are typically plagued by the existence of abundant structural defects, which pose a formidable challenge to achieving large‐scale and high‐performance organic electronics. Here, we elucidate that these structural defects are mainly originated from printing flow‐induced anisotropic growth, an important factor that has been overlooked for too long. In light of this, we propose a surfactant‐additive printing method to effectively overcome the anisotropic growth, enabling the deposition of uniform OSCFs over the wafer scale at a high speed of 1.2 mm s−1 at room temperature. The resulting OSCF exhibits appealing performance with a high average mobility up to 10.7 cm2 V−1 s−1, which is one of the highest values for flexible organic field‐effect transistor arrays. Moreover, we realize large‐scale OSCF‐based flexible logic circuits, which can be bent without degradation to a radius as small as 4.0 mm and over 1000 cycles. Our work provides profound insights into breaking the limitation of flow‐induced anisotropic growth and opens new avenues for printing large‐scale organic single‐crystal electronics.This article is protected by copyright. All rights reserved

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Rapid Meniscus‐Assisted Solution‐Printing of Conjugated Block Copolymers for Field‐Effect Transistors (Adv. Funct. Mater. 14/2022)

Cited by 4 publications

References 0 publications

Microstructures Formation through Liquid‐Assisted Assembly of Functional Materials for High‐Performance Electronics

Microstructures Formation through Liquid‐Assisted Assembly of Functional Materials for High‐Performance Electronics

Diselenophene‐Dithioalkylthiophene Based Quinoidal Small Molecules for Ambipolar Organic Field Effect Transistors

Breaking Fundamental Limitation of Flow‐Induced Anisotropic Growth for Large‐Scale and Fast Printing of Organic Single‐Crystal Films

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