Dramatic Inversion of Charge Polarity in Diketopyrrolopyrrole‐Based Organic Field‐Effect Transistors via a Simple Nitrile Group Substitution

Yun, Hui‐Jun; Kang, Seok‐Ju; Xu, Yong; Kim, Seul Ong; Kim, Yun‐Hi; Noh, Yong‐Young; Kwon, Soon‐Ki

doi:10.1002/adma.201403262

Cited by 228 publications

(168 citation statements)

References 35 publications

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“…For decades, semiconducting polymers have been extensively studied for their application in curved or foldable electronic devices such as the organic light emitting diodes12, thin-film transistors34567, and photovoltaics8910 owing to their flexibility, light-weight, and solution processability. In particular, the current interest in wearable device technology is promoting the development of organic thermoelectric devices that can utilize residual body heat as the power source111213141516171819202122232425.…”

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confidence: 99%

High Thermoelectric Power Factor of a Diketopyrrolopyrrole-Based Low Bandgap Polymer via Finely Tuned Doping Engineering

Jung

Hong

Lee

et al. 2017

Sci Rep

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We studied the thermoelectric properties of a diketopyrrolopyrrole-based semiconductor (PDPP3T) via a precisely tuned doping process using Iron (III) chloride. In particular, the doping states of PDPP3T film were linearly controlled depending on the dopant concentration. The outstanding Seebeck coefficient of PDPP3T assisted the excellent power factors (PFs) over 200 μW m−1K−2 at the broad range of doping concentration (3–8 mM) and the maximum PF reached up to 276 μW m−1K−2, which is much higher than that of poly(3-hexylthiophene), 56 μW m−1K−2. The high-mobility of PDPP3T was beneficial to enhance the electrical conductivity and the low level of total dopant volume was important to maintain high Seebeck coefficients. In addition, the low bandgap PDPP3T polymer effiectively shifted its absorption into near infra-red area and became more colorless after doping, which is great advantage to realize transparent electronic devices. Our results give importance guidance to develop thermoelectric semiconducting polymers and we suggest that the use of low bandgap and high-mobility polymers, and the accurate control of the doping levels are key factors for obtaining the high thermoelectric PF.

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confidence: 99%

High Thermoelectric Power Factor of a Diketopyrrolopyrrole-Based Low Bandgap Polymer via Finely Tuned Doping Engineering

Jung

Hong

Lee

et al. 2017

Sci Rep

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“…325,343 Furthermore, many of the DPP derivatives, especially those flanked by furan rings, have favorable energy levels and band gaps, as well as sufficiently high hole mobility to be used as donor materials for organic photovoltaics (OPVs). 344 In addition to conducting and semiconducting elements, organic electronic devices require the use of dielectric, encapsulating, and substrate materials.…”

Section: Low-cost Synthetic Semiconductorsmentioning

confidence: 99%

Sustainable Life Cycles of Natural-Precursor-Derived Nanocarbons

2015

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Sustainable societal and economic development relies on novel nanotechnologies that offer maximum efficiency at minimal environmental cost. Yet, it is very challenging to apply green chemistry approaches across the entire life cycle of nanotech products, from design and nanomaterial synthesis to utilization and disposal. Recently, novel, efficient methods based on nonequilibrium reactive plasma chemistries that minimize the process steps and dramatically reduce the use of expensive and hazardous reagents have been applied to low-cost natural and waste sources to produce value-added nanomaterials with a wide range of applications. This review discusses the distinctive effects of nonequilibrium reactive chemistries and how these effects can aid and advance the integration of sustainable chemistry into each stage of nanotech product life. Examples of the use of enabling plasma-based technologies in sustainable production and degradation of nanotech products are discussed-from selection of precursors derived from natural resources and their conversion into functional building units, to methods for green synthesis of useful naturally degradable carbon-based nanomaterials, to device operation and eventual disintegration into naturally degradable yet potentially reusable byproducts.

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“…[4].T he largestc urrently reported mobilities for solution-processed semiconductors are:4 3cm 2 V À 1 s À 1 (small-molecule p-channel, blue), [9] 11 cm 2 V À1 s À1 (small-molecule n-channel,v iolet), [10] 10.5 cm 2 V À1 s À1 (polymer p-channel, green), [11] and 7cm 2 V À 1 s À 1 (polymer n-channel, maroon). [12] Similarly,f or vacuum-processed OSCs, the largest reported mobilities are 23 cm 2 V À1 s À1 (p-channel, red) [13] and 10 cm 2 V À1 s À1 (n-channel, black). [14] Note that the best n-type performance was achieved in ambipolar transistors.…”

Section: Introductionmentioning

confidence: 99%

“…[14] Note that the best n-type performance was achieved in ambipolar transistors. [12,14] Several recent reports, however,s uggest that some of these values may be overestimated owing to the fact that standard mobility extraction models were used in conjunction with non-ideal current-voltage characteristics in the corresponding devices. [15,16] Nevertheless, the significant increase in the electrical performance with time for each class is clear,a nd this is ar esult of the development of new materials and device structures.…”

Section: Introductionmentioning

confidence: 99%

Versatile Organic Transistors by Solution Processing

2015

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A selection of the latest developments in organic electronic materials and organic field-effect transistor (OFET) devices is reviewed here with an emphasis on the synthetic and manufacturing versatility, ease of processing, and low cost offered by solution processability. At the heart of these benefits is the nature of the weak van der Waals intermolecular interactions inherent to organic compounds. This allows processability with a relatively small amount of energy investment. Material solubility, in particular, creates unique pathways for film fabrication and the design of new device architectures, while presenting new manufacturing challenges to explore. In this review we provide a chronological presentation of the important developments in the solution-deposited organic small-molecule semiconductor, dielectric, and electrode materials used in OFETs, making specific note of current benchmarks. Organic device architectures and fabrication methods that are characterized by reduced complexity and ease of implementation are discussed.

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Dramatic Inversion of Charge Polarity in Diketopyrrolopyrrole‐Based Organic Field‐Effect Transistors via a Simple Nitrile Group Substitution

Cited by 228 publications

References 35 publications

High Thermoelectric Power Factor of a Diketopyrrolopyrrole-Based Low Bandgap Polymer via Finely Tuned Doping Engineering

High Thermoelectric Power Factor of a Diketopyrrolopyrrole-Based Low Bandgap Polymer via Finely Tuned Doping Engineering

Sustainable Life Cycles of Natural-Precursor-Derived Nanocarbons

Versatile Organic Transistors by Solution Processing

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