Sharp phase-separated interface of 6,13-bis(triisopropylsilylethynyl) pentacene/polystyrene blend films prepared by electrostatic spray deposition

Onojima, Norio; Ozawa, T.; Sugai, Takuya; Obata, Shunsuke; Miyazawa, Yuta; Yamanaka, Junji

doi:10.1016/j.orgel.2018.12.037

Cited by 18 publications

(15 citation statements)

References 33 publications

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“…[ 31,49,51,94,98–100 ] In 2008, Smith et al. [ 46,73 ] first suggested that dielectric polymer could be replaced by semiconducting polymer. The semiconductor polymer PTAA as a binder not only improved the uniformity of the device but also obtained higher hole mobility than an insulating polymer, for example, PS.…”

Section: Optimization Strategy Of Vps Structurementioning

confidence: 99%

Vertical Phase Separation Structure for High‐Performance Organic Thin‐Film Transistors: Mechanism, Optimization Strategy, and Large‐Area Fabrication toward Flexible and Stretchable Electronics

Yin

Yang

Wang

2022

Adv Funct Materials

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Organic thin-film transistors (OTFTs) exhibit great potential applications in flexible logic circuits, sensors, nonvolatile memory, etc. The vertical phase separation (VPS) structure, deriving from the blends of small molecules and polymers, can produce a high-quality crystalline semiconducting layer and an intrinsic and trap-free semiconductor/insulator interface. OTFTs with a VPS structure provide a promising route to accelerate their commercialization due to these desirable features including excellent device performance, good uniformity and reproducibility, environmental and mechanical stability, lowcost and large-area fabrication. Additionally, VPS OTFTs also exhibit a good balance between electronical properties and stretchability for intrinsic stretchable OTFTs. Herein, a comprehensive review is given on VPS structure for flexible and stretchable OTFTs. First, the evolution history of VPS structures and its formation mechanism are summarized. Based on the understanding of the VPS structure, the optimization strategies of VPS structures for highperformance OTFTs are presented. Subsequently, the large-area fabrication techniques of VPS structures, as well as the potential applications in flexible and stretchable OTFTs, are discussed. Finally, conclusions and outlook are provided for the further development of VPS structure in OTFTs. This review would promote the understanding and development of VPS structures in OTFTs, accelerating its applications in flexible and stretchable electronics.

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Section: Optimization Strategy Of Vps Structurementioning

confidence: 99%

Vertical Phase Separation Structure for High‐Performance Organic Thin‐Film Transistors: Mechanism, Optimization Strategy, and Large‐Area Fabrication toward Flexible and Stretchable Electronics

Yin

Yang

Wang

2022

Adv Funct Materials

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Section: Realization Of Large-area Fabrication By Using Multicomponen...mentioning

confidence: 99%

“…Therefore, the application of ESD in the preparation of the organic semiconductor thin films can achieve high-performance large-area OFETs. Miyazawa et al used the ESD technique to spray the TIPS-PEN/PS blend solution, in which PS was added to improve the areal coverage of the semiconductor film (Figure c) . The deposited film underwent vertical phase separation without additional annealing treatment.…”

Section: Realization Of Large-area Fabrication By Using Multicomponen...mentioning

confidence: 99%

“…Miyazawa et al used the ESD technique to spray the TIPS-PEN/PS blend solution, in which PS was added to improve the areal coverage of the semiconductor film (Figure 11c). 92 The deposited film underwent vertical phase separation without additional annealing treatment. The mobility of the OFET based on TIPS-PEN/PS was 0.43 cm 2 V −1 s −1 , higher than that of the TIPS-PEN/PMMA blend.…”

Section: Realization Of Large-area Fabrication By Using Multicomponen...mentioning

confidence: 99%

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Multicomponent Blend Systems Used in Organic Field-Effect Transistors: Charge Transport Properties, Large-Area Preparation, and Functional Devices

Pan

2021

Chem. Mater.

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As important foundational devices of organic electronics, organic field-effect transistors (OFETs) have great potential in logic circuits, radio frequency tags, and flexible backplanes. Structural engineering and device optimization lead to the high mobilities of OFETs comparable to or even exceeding those of amorphous silicon transistors. However, meeting the requirements of practical applications is still challenging in terms of the device stability, uniformity, and large-area preparation. Meanwhile, the development of functional OFETs has also entered an era full of opportunities and challenges. To solve the current dilemma, a growing number of studies have demonstrated that using multicomponent blend systems is an effective way to promote the development of OFETs. Blending two or more components can combine the advantages of each component and provide enhanced properties that behave differently from those in single-component systems. This method has proven to improve the performance in many electronics applications. In this review, multicomponent systems used in OFETs are summarized to clarify the important implications, including the influence on the charge transport properties, combination with processing techniques, and applications in stretchable electronics, gas sensors, phototransistors, and nonvolatile memory devices. In brief, multicomponent blend systems can pave the way for the development of OFETs.

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“…The suitable viscosity of the solution/ink should be of concern to improve printability. Foreign additives are involved in order to deposit a large-scale thin film with better uniformity, however, with the cost of losing single-crystallinity. − Furthermore, novel applications such as three-dimensional (3D) integration of transistors in a vertical phase to scale up device density have been reported very recently. ,, For more details and discussion about printing we refer to refs , , and .…”

Section: Pathways Toward Solution-grown Organic Single Crystals In La...mentioning

confidence: 99%

Scaling Up Principles for Solution-Processed Organic Single-Crystalline Heterojunctions

Peng

et al. 2020

Chem. Mater.

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The development of advanced organic devices has already broken the limit of one-component material constitution, seeking for integration of multiple components to achieve new features. It is well-known that organic single crystals have highly ordered molecular packing, which directly bounds up with electrical and optoelectrical behaviors. Thus, organic heterojunctions composed of binary organic single crystals are able to exhibit superior electrical/optoelectrical performance as well as novel functions. Intimate junction contact, high coverage, and wellaligned morphology are demanded in large-scale organic singlecrystalline heterojunctions for realizing subsequent device fabrication and further practical production. So far, fabrication of organic single-crystalline heterostructures without destroying the single crystallinity of both crystals has been extremely challenging, due to the fragile nature of weak noncovalent molecule−molecule interactions in organic single crystals. Therefore, the long-standing discrepancy will exist between the urgent need of organic singlecrystalline heterojunctions with desired morphology and enormous challenges in feasible large-scale preparation. Along with continuous developments in recent literature, we try to provide two principle frameworks including two-step crystallization and onestep crystallization methods as possible solutions.

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Sharp phase-separated interface of 6,13-bis(triisopropylsilylethynyl) pentacene/polystyrene blend films prepared by electrostatic spray deposition

Cited by 18 publications

References 33 publications

Vertical Phase Separation Structure for High‐Performance Organic Thin‐Film Transistors: Mechanism, Optimization Strategy, and Large‐Area Fabrication toward Flexible and Stretchable Electronics

Vertical Phase Separation Structure for High‐Performance Organic Thin‐Film Transistors: Mechanism, Optimization Strategy, and Large‐Area Fabrication toward Flexible and Stretchable Electronics

Multicomponent Blend Systems Used in Organic Field-Effect Transistors: Charge Transport Properties, Large-Area Preparation, and Functional Devices

Scaling Up Principles for Solution-Processed Organic Single-Crystalline Heterojunctions

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