Air-Stable and High-Performance Unipolar n-Type Conjugated Semiconducting Polymers Prepared by a “Strong Acceptor–Weak Donor” Strategy

Huang, Kaiqiang; Huang, Gang; Wang, Xiaohong; Lu, Hongbo; Zhang, Guobing; Qiu, Longzhen

doi:10.1021/acsami.0c02322

Cited by 20 publications

(16 citation statements)

References 46 publications

(113 reference statements)

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“…[ 10,14 ] In addition, the operational stability of the materials is also improved and OFETs derived from thiophene–thiazole D–A polymers show comparable bias stress stability (excluding off‐bias driven instability) to that of amorphous silicon thin‐film transistors. [ 9,16–18 ] The deep highest occupied molecular orbital (HOMO) energy levels (≤ −5.1 eV) of D–A polymers reduce the likelihood of oxidation of the intrinsic polymers in use or on extended storage. [ 10,14,18 ] These characteristic performances may be advantageous in EGOFETs.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Performance of Donor–Acceptor Conjugated Polymers in Electrolyte‐Gated Organic Field‐Effect Transistors

Doumbia

Tong

Wilson³

et al. 2021

Adv Elect Materials

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Electrolyte‐gated organic field‐effect transistors (EGOFETs) are gaining interest for application in bioelectronic devices. However, robust performance in terms of charge‐carrier mobility, on‐to‐off drain current ratio (Ion/Ioff), and turn‐on speed are required for real application. Here, donor‐acceptor (D‐A) conjugated polymers, namely poly[2,5‐(2‐octyldodecyl)‐3,6‐diketopyrrolopyrrole‐alt‐5,5‐(2,5‐di(thien‐2‐yl)thieno[3,2‐b]thiophene)] (PDPPDTT) and indacenodithiophene‐co‐benzothiadiazole (PIDTBT), are evaluated in EGOFETs. The operational performance of these materials is compared to that of the well‐established conjugated polymer, poly[2,5‐bis(3‐hexadecylthiophen‐2‐yl)thieno[3,2‐b]thiophene] (PBTTT). The effective mobility extracted for the PDPPDTT (0.18 cm2 V−1 s−1), and PIDTBT (0.16 cm2 V−1 s−1) devices is almost double that of the PBTTT (0.10 cm2 V−1 s−1) based device and the Ion/Ioff is one ((PDPPDTT): 3 × 103) or two ((PIDTBT): 2 × 104) orders of magnitude higher than that of PBTTT (2 × 102) devices. The extracted values compare favorably to those of the highest performing EGOFETs and EGOFETs based on the D‐A polymers turn from off to on state two to ten times faster than the analogous PBTTT device with an improved subthreshold swing. These results show that D‐A polymers with a planar conjugated backbone enable the development of robust EGOFETs that are well appropriate for applications in bioelectronic devices.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Performance of Donor–Acceptor Conjugated Polymers in Electrolyte‐Gated Organic Field‐Effect Transistors

Doumbia

Tong

Wilson³

et al. 2021

Adv Elect Materials

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“…According to the DFT calculation results, the dihedral angle between DPP and the flanking phenyl is in the range of 20-40°. [73] This twist may impede the formation of attractive intramolecular interactions, and, in turn lead to lower device performances for the corresponding polymers. To reduce the steric hindrance, Sun et al used the pyridine flanks as an alternative.…”

Section: Noncovalent Hydrogen Bonds In Diketopyrrolopyrrole-based Con...mentioning

confidence: 99%

“…After the device with the bottom gate top contact (BGTC) configuration was placed in ambient environment for 27 days, the electron mobility still reached 0.50 cm 2 V −1 s −1 . [73] Subsequently, Liu et al introduced different contents of bis(2-oxoindolin-3ylidene)benzodifurandione units into the IID-based polymers by chemical blending, and obtained a series of new random polymers P56-P63 (Figure 8e). The introduction of the third unit has a strong influence on the energy levels, light absorption, solubility, and crystal structure of the polymers.…”

Section: Noncovalent Hydrogen Bonds In Isoindigo-based Conjugated Pol...mentioning

confidence: 99%

“…Compared with the conventional rylene diimide, the EBIQ unit has fused imide rings that planarize the framework along the arylene–vinylene conjugated path, and suppress the backbone twisting as well. [ 73 ] Moreover, six‐membered‐ring imides contribute to formation of intramolecular CH···O hydrogen bond interactions, as evidenced by the NMR spectrum (Figure 4c). The backbone structure provides attaching sites to tailor the electronic structures, conducive to the tuning of n‐type properties.…”

Section: Semiconducting Polymers With Hydrogen Bondingmentioning

confidence: 99%

mentioning

confidence: 99%

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Recent Structural Engineering of Polymer Semiconductors Incorporating Hydrogen Bonds

et al. 2022

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Highly planar, extended π‐electron organic conjugated polymers have been increasingly attractive for achieving high‐mobility organic semiconductors. In addition to the conventional strategy to construct rigid backbone by covalent bonds, hydrogen bond has been employed extensively to increase the planarity and rigidity of polymer via intramolecular noncovalent interactions. This review provides a general summary of high‐mobility semiconducting polymers incorporating hydrogen bonds in field‐effect transistors over recent years. The structural engineering of the hydrogen bond‐containing building blocks and the discussion of theoretical simulation, microstructural characterization, and device performance are covered. Additionally, the effects of the introduction of hydrogen bond on self‐healing, stretchability, chemical sensitivity, and mechanical properties are also discussed. The review aims to help and inspire design of new high‐mobility conjugated polymers with superiority of mechanical flexibility by incorporation of hydrogen bond for the application in flexible electronics.

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Lactone Backbone Density in Rigid Electron‐Deficient Semiconducting Polymers Enabling High n‐type Organic Thermoelectric Performance

et al. 2021

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Three lactone-based rigid semiconducting polymers were designed to overcome major limitations in the development of n-type organic thermoelectrics,n amely electrical conductivity and air stability.E xperimental and theoretical investigations demonstrated that increasing the lactone group density by increasing the benzene content from 0% benzene (P-0), to 50 %( P-50), and 75 %( P-75) resulted in progressively larger electron affinities (up to 4.37 eV), suggesting amore favorable doping process,when employing (N-DMBI) as the dopant. Larger polaron delocalization was also evident, due to the more planarized conformation, which is proposed to lead to alower hopping energy barrier.Asaconsequence,the electrical conductivity increased by three orders of magnitude, to achieve values of up to 12 Scma nd Power factors of 13.2 mWm À1 K À2 were therebye nabled. These findings present new insights into material design guidelines for the future development of air stable n-type organic thermoelectrics.

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Air-Stable and High-Performance Unipolar n-Type Conjugated Semiconducting Polymers Prepared by a “Strong Acceptor–Weak Donor” Strategy

Cited by 20 publications

References 46 publications

Investigation of the Performance of Donor–Acceptor Conjugated Polymers in Electrolyte‐Gated Organic Field‐Effect Transistors

Investigation of the Performance of Donor–Acceptor Conjugated Polymers in Electrolyte‐Gated Organic Field‐Effect Transistors

Recent Structural Engineering of Polymer Semiconductors Incorporating Hydrogen Bonds

Lactone Backbone Density in Rigid Electron‐Deficient Semiconducting Polymers Enabling High n‐type Organic Thermoelectric Performance

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