An ultra-low bandgap diketopyrrolopyrrole (DPP)-based polymer with balanced ambipolar charge transport for organic field-effect transistors

Jiang, Tao; Xue, Zhongyuan; Ford, Michael J.; Shaw, Jessica; Cao, Xudong; Tao, Youtian; Hu, Yuanyuan; Huang, Wei

doi:10.1039/c6ra14327j

Cited by 12 publications

(7 citation statements)

References 42 publications

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“…In addition, the turn-on voltages of p-type and n-type are typically different in ambipolar OTFTs 38 , 39 . Previous research for balancing electron and hole current has focused on designing new materials 40 – 43 or devising a new approach to blend 44 , 45 or stack 46 , 47 two materials. While such approaches are very promising, the balance between hole and electron currents may vary depending on the device structure 40 , 43 or manufacturing process 42 .…”

Section: Introductionmentioning

confidence: 99%

“…Previous research for balancing electron and hole current has focused on designing new materials 40 – 43 or devising a new approach to blend 44 , 45 or stack 46 , 47 two materials. While such approaches are very promising, the balance between hole and electron currents may vary depending on the device structure 40 , 43 or manufacturing process 42 . Therefore, there is a great need to more clearly understand and control the p-type and n-type charge transport properties through a comprehensive physical analysis.…”

Section: Introductionmentioning

confidence: 99%

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Balancing Hole and Electron Conduction in Ambipolar Split-Gate Thin-Film Transistors

Yoo

Ghittorelli

Lee

et al. 2017

Sci Rep

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Complementary organic electronics is a key enabling technology for the development of new applications including smart ubiquitous sensors, wearable electronics, and healthcare devices. High-performance, high-functionality and reliable complementary circuits require n- and p-type thin-film transistors with balanced characteristics. Recent advancements in ambipolar organic transistors in terms of semiconductor and device engineering demonstrate the great potential of this route but, unfortunately, the actual development of ambipolar organic complementary electronics is currently hampered by the uneven electron (n-type) and hole (p-type) conduction in ambipolar organic transistors. Here we show ambipolar organic thin-film transistors with balanced n-type and p-type operation. By manipulating air exposure and vacuum annealing conditions, we show that well-balanced electron and hole transport properties can be easily obtained. The method is used to control hole and electron conductions in split-gate transistors based on a solution-processed donor-acceptor semiconducting polymer. Complementary logic inverters with balanced charging and discharging characteristics are demonstrated. These findings may open up new opportunities for the rational design of complementary electronics based on ambipolar organic transistors.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Balancing Hole and Electron Conduction in Ambipolar Split-Gate Thin-Film Transistors

Yoo

Ghittorelli

Lee

et al. 2017

Sci Rep

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“…Under weak base condition, the intermediate 2 was brominated using Br 2 to give the desired DMO ‐based monomer, 3 in moderate yield . The thiophene‐flanked DPP, 4a or selenophene‐flanked DPP, 4b reacted with lithium diisopropylamide, then quenched with 2‐isopropoxy‐4,4,5,5‐tetramethyl‐1,3,2‐dioxaborolane under low temperature conditions of −20–0 °C . After being precipitated in CH 2 Cl 2 /acetone system several times, the pure boronic esters, 5a and 5b were obtained in high yields.…”

Section: Resultsmentioning

confidence: 99%

“…Air and water sensitive reactions were performed under argon with anhydrous solvents. Bis(5‐bromothiophen‐2‐yl)methanone, 2,5‐bis(2‐decyltetradecyl)‐3,6‐di(thiophen‐2‐yl)pyrrolo[3,4‐ c ]pyrrole‐1,4( 2H , 5H )‐dione ( 4a ), 2,5‐bis(2‐decyltetradecyl)‐3,6‐di(selenophen‐2‐yl)pyrrolo[3,4‐ c ]pyrrole‐1,4( 2H , 5H )‐dione ( 4b ) and their boronic esters ( 5a and 5b ) were prepared according to the methods reported …”

Section: Methodsmentioning

confidence: 99%

Dithienylmethanone‐Based Cross‐Conjugated Polymer Semiconductors: Synthesis, Characterization, and Application in Field‐Effect Transistors

Shi

Zhang

Wei

et al. 2018

J. Polym. Sci. Part A: Polym. Chem.

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Herein, we report the synthesis, characterization, and field-effect properties of two cross-conjugated dithienylmethanone (DMO)-based alternating polymers, namely, PDMO-S and PDMO-Se. Both polymers possess high thermal stability, good solubility, and broad absorption spectra. Their electrochemical properties were investigated using cyclic voltammetry, indicating that PDMO-Se has higher HOMO/LUMO energy levels of 25.49/23.49 eV than 25.57/23.58 eV of PDMO-S. The two polymers exhibited promising charge transport properties with the highest hole mobility of 0.12 cm 2 V 21 s 21 for PDMO-S and 0.025 cm 2 V 21 s 21 for PDMO-Se. AFM and 2D-GIXRD analyses demonstrated that the PDMO-S formed lamellar, edge-on packing thin film with close p-p stacking. These findings suggest that cross-conjugated polymers might be potential semiconducting materials for low-cost and flexible organic electronics.

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“…Well‐balanced ambipolar OFETs were indispensable for the fabrication of high‐performance complementary‐like inverters and high‐speed logic circuits . However, up to now, it is still challenging to obtain well‐balanced hole and electron mobilities . 2DMC bilayer p–n junctions provided the opportunity to tune the hole and electron mobilities by controlling the p‐ and n‐type layer numbers for balanced transport.…”

mentioning

confidence: 99%

2D Molecular Crystal Bilayer p–n Junctions: A General Route toward High‐Performance and Well‐Balanced Ambipolar Organic Field‐Effect Transistors

Zhu

Zhang

Ren

et al. 2019

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Ambipolar organic field‐effect transistors (OFETs) are vital for the construction of high‐performance all‐organic digital circuits. The bilayer p–n junction structure, which is composed of separate layers of p‐ and n‐type organic semiconductors, is considered a promising way to realize well‐balanced ambipolar charge transport. However, this approach suffers from severely reduced mobility due to the rough interface between the polycrystalline thin films of p‐ and n‐type organic semiconductors. Herein, 2D molecular crystal (2DMC) bilayer p–n junctions are proposed to construct high‐performance and well‐balanced ambipolar OFETs. The molecular‐scale thickness of the 2DMC ensures high injection efficiency and the atomically flat surface of the 2DMC leads to high‐quality p‐ and n‐layer interfaces. Moreover, by controlling the layer numbers of the p‐ and n‐type 2DMCs, the electron and hole mobilities are tuned and well‐balanced ambipolar transport is accomplished. The hole and electron mobilities reach up to 0.87 and 0.82 cm2 V−1 s−1, respectively, which are the highest values among organic single‐crystalline double‐channel OFETs measured in ambient air. This work provides a general route to construct high‐performance and well‐balanced ambipolar OFETs based on available unipolar materials.

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An ultra-low bandgap diketopyrrolopyrrole (DPP)-based polymer with balanced ambipolar charge transport for organic field-effect transistors

Abstract: Molecular design on new A1–A2 type polymer pDTDPP–TTF exhibiting ultra-low bandgap and balanced ambipolar charge transport was conducted for solution-processed OFETs.

Cited by 12 publications

References 42 publications

Balancing Hole and Electron Conduction in Ambipolar Split-Gate Thin-Film Transistors

Balancing Hole and Electron Conduction in Ambipolar Split-Gate Thin-Film Transistors

Dithienylmethanone‐Based Cross‐Conjugated Polymer Semiconductors: Synthesis, Characterization, and Application in Field‐Effect Transistors

2D Molecular Crystal Bilayer p–n Junctions: A General Route toward High‐Performance and Well‐Balanced Ambipolar Organic Field‐Effect Transistors

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