A simulation-assisted solution-processing method for a large-area, high-performance C<sub>10</sub>-DNTT organic semiconductor crystal

Peng, Boyu; Wang, Zongrong; Chan, Paddy K. L.

doi:10.1039/c6tc03432b

Cited by 54 publications

(62 citation statements)

References 34 publications

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“…The surface morphology of films fabricated under a fast shearing speed (10 µm s −1 ) was compared in Figure S7b in the Supporting Information, the abundant large gaps are induced by the unbalanced diffusion rate between the evaporation of the solvent and the consumption of C 10 -DNTT molecules. [15,53,54] The detailed discussion about the correlation between the solvent evaporation and the shearing speed can be found in ref. [53].…”

Section: Doi: 101002/advs201900775mentioning

confidence: 99%

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Field‐Effect Transistors Based on 2D Organic Semiconductors Developed by a Hybrid Deposition Method

Zhou

Wang

et al. 2019

Advanced Science

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Solution‐processed 2D organic semiconductors (OSCs) have drawn considerable attention because of their novel applications from flexible optoelectronics to biosensors. However, obtaining well‐oriented sheets of 2D organic materials with low defect density still poses a challenge. Here, a highly crystallized 2,9‐didecyldinaphtho[2,3‐b:2′,3′‐f]thieno[3,2‐b]thiophene (C10‐DNTT) monolayer crystal with large‐area uniformity is obtained by an ultraslow shearing (USS) method and its growth pattern shows a kinetic Wulff's construction supported by theoretical calculations of surface energies. The resulting seamless and highly crystalline monolayers are then used as templates for thermally depositing another C10‐DNTT ultrathin top‐up film. The organic thin films deposited by this hybrid approach show an interesting coherence structure with a copied molecular orientation of the templating crystal. The organic field‐effect transistors developed by these hybrid C10‐DNTT films exhibit improved carrier mobility of 14.7 cm2 V−1 s−1 as compared with 7.3 cm2 V−1 s−1 achieved by pure thermal evaporation (100% improvement) and 2.8 cm2 V−1 s−1 achieved by solution sheared monolayer C10‐DNTT. This work establishes a simple yet effective approach for fabricating high‐performance and low‐cost electronics on a large scale.

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Section: Doi: 101002/advs201900775mentioning

confidence: 99%

“…[15,53,54] The detailed discussion about the correlation between the solvent evaporation and the shearing speed can be found in ref. [53]. At high deposition temperature around 90 °C, the concentration of solution near the meniscus line drastically increased due to the rapid evaporation of the solvent.…”

Section: Doi: 101002/advs201900775mentioning

confidence: 99%

Field‐Effect Transistors Based on 2D Organic Semiconductors Developed by a Hybrid Deposition Method

Zhou

Wang

et al. 2019

Advanced Science

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“…Static power consumption may be ignored for a simple circuit but increases rapidly with the level of integration. [66] Based on Equation (12), the key parameters to achieve low-power OFET include the reduction of V DD , since it has a quadratic effect on dynamic power dissipation (the most effective method is applying a high-k dielectric); steep subthreshold swing; and low dielectric leakage current (which both determine the static leakage current in the circuit). Other than this, device sizing and proper thermal design are also critical.…”

Section: Static Power Consumptionmentioning

confidence: 99%

Organic Field‐Effect Transistor for Energy‐Related Applications: Low‐Power‐Consumption Devices, Near‐Infrared Phototransistors, and Organic Thermoelectric Devices

Ren

Yang

Gao

et al. 2018

Advanced Energy Materials

102

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The operating frequency of ring oscillators or radio-frequency identification tags made by OFETs have surpassed MHz. [27,28] With the growing level of integration and the operating frequency of OFETs, the power dissipation issue can no longer be ignored. Considering the material composition of most organic semiconductors, controlling the temperature rise within a reasonable range is important to avoid the unwanted degradation of organic materials and therefore maintain stable device operation. In addition, OFETs fabricated on flexi ble substrates somehow limit the use of conventional batteries. To avoid externally wiring the batteries, flexible OFET-based circuits can be expected to be self-powered by integrating them with organic solar cells, thermoelectric modules, or triboelectric nanogenerators. [29,30] All of these demands require OFETs operating with extremely low power consumption. Rapid progress has been made in this field, and research efforts have focused on reducing the operating voltage of OFETs, [31][32][33] enhancing the switching efficiency of transistors, [34][35][36][37] and demonstrating several novel device concepts for low-power applications. [38][39][40][41][42] Despite the switching function, OFETs can also be utilized in emerging energy-related applications, such as near-infrared (NIR) photodetectors and organic thermoelectric devices dueThe organic field-effect transistor (OFET) is the basic building block of integrated circuits. The charge carrier mobility and operating frequency of OFETs have continued to increase; therefore, the power dissipation of OFETs can no longer be ignored. Many research efforts have been made to develop low-power-consumption OFETs and complementary circuits. Despite the switching function, OFETs can also be utilized in emerging energy-related applications, such as near-infrared (NIR) photodetectors and organic thermoelectric devices. Organic phototransistors show considerably higher photo responsivity than other photodetector architectures due to field-effect charge modulation. The photoinduced gate modulating largely suppresses the dark current while simultaneously providing gain. These characteristics may favor NIR light detection and suggest that the organic phototransistor is a promising candidate for optoelectronic applications in the NIR regime. For organic thermoelectric applications, OFETs can work as a powerful tool for examining the charge and energy transport in the organic semiconductor, thus giving insight into organic thermoelectric studies. In this review, the authors highlight recent advances in OFET-related energy topics, including lowpower-consumption OFETs, NIR photodetectors, and organic thermoelectric devices. The remaining challenges in the field will also be discussed.

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“…[1][2][3][4][5] Recent advances in fabrication techniques and molecular designs have already lead to mobilities beyond 10 cm 2 (Vs) −1 . Among them, meniscus-guided solution-coating techniques such as dip coating, [14,15] zone casting, [16][17][18] solution shearing, [19][20][21] www.advmatinterfaces.de rules to guide experimentalists in choosing a proper solventsurface treatment combination. Among them, meniscus-guided solution-coating techniques such as dip coating, [14,15] zone casting, [16][17][18] solution shearing, [19][20][21] www.advmatinterfaces.de rules to guide experimentalists in choosing a proper solventsurface treatment combination.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9][10] As grain boundaries can significantly reduce the performance of these films, [11][12][13] several techniques have been developed to fabricate highly crystalline thin films. Among them, meniscus-guided solution-coating techniques such as dip coating, [14,15] zone casting, [16][17][18] solution shearing, [19][20][21] rules to guide experimentalists in choosing a proper solventsurface treatment combination. This paper is organized as follows: First, the impact of surface treatment on the coating process and thin film morphology is discussed.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Surface Treatment on the Solution Coating of Single‐Crystalline Organic Thin‐Films

Janneck

Heremans

Genoe

et al. 2018

Adv Materials Inter

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and others [10,22,23] show high potential to achieve next generation high performance thin films. These techniques rely on the creation of a moving meniscus front, where enhanced evaporation at the tip of the meniscus leads to the precipitation of the organic solute onto the advancing single-crystalline thin film. As it defines meniscus shape, the wetting behavior of the solution on the substrate strongly impacts film formation.Typically, self-assembled monolayers are used to modify the surface energy of substrates [24] as well as to reduce their surface defect density [25,26] and control the carrier density. Several studies show that for evaporated thin films of organic semiconductors, self-assembled monolayer treatments affect both film morphology and electrical characteristics. [27][28][29] Generally, treatments with low surface energy are preferred for evaporation of organic thin films as they typically lead to larger grain sizes and good passivation of the dielectric surface. [27,29] For meniscus-guided coating

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A simulation-assisted solution-processing method for a large-area, high-performance C₁₀-DNTT organic semiconductor crystal

Abstract: A quasi-equilibrium low-speed solution shearing method to deposit C10-DNTT is developed.

Cited by 54 publications

References 34 publications

Field‐Effect Transistors Based on 2D Organic Semiconductors Developed by a Hybrid Deposition Method

Field‐Effect Transistors Based on 2D Organic Semiconductors Developed by a Hybrid Deposition Method

Organic Field‐Effect Transistor for Energy‐Related Applications: Low‐Power‐Consumption Devices, Near‐Infrared Phototransistors, and Organic Thermoelectric Devices

Influence of the Surface Treatment on the Solution Coating of Single‐Crystalline Organic Thin‐Films

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A simulation-assisted solution-processing method for a large-area, high-performance C10-DNTT organic semiconductor crystal

Abstract: A quasi-equilibrium low-speed solution shearing method to deposit C10-DNTT is developed.

Cited by 54 publications

References 34 publications

Field‐Effect Transistors Based on 2D Organic Semiconductors Developed by a Hybrid Deposition Method

Field‐Effect Transistors Based on 2D Organic Semiconductors Developed by a Hybrid Deposition Method

Organic Field‐Effect Transistor for Energy‐Related Applications: Low‐Power‐Consumption Devices, Near‐Infrared Phototransistors, and Organic Thermoelectric Devices

Influence of the Surface Treatment on the Solution Coating of Single‐Crystalline Organic Thin‐Films

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A simulation-assisted solution-processing method for a large-area, high-performance C₁₀-DNTT organic semiconductor crystal