Organic Transistor Based on Cyclopentadithiophene‐Benzothiadiazole Donor–Acceptor Copolymer for the Detection and Discrimination between Multiple Structural Isomers

Khatib, Muhammad; Huynh, Tan‐Phat; Sun, Jiaxing; Trang, Thu; Sonar, Prashant; Hinkel, Felix; Müllen, Kläus; Haick, Hossam

doi:10.1002/adfm.201808188

Cited by 23 publications

(21 citation statements)

References 25 publications

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“…Over the past decades, organic field‐effect transistors (OFETs) have received considerable attentions owing to their great potential applications in next‐generation flexible and low‐cost electronics, such as displays, [ 1–4 ] artificial skin, [ 5–7 ] chemical sensors, [ 8–10 ] etc. OFETs are composed of source/drain electrodes, gate electrode, dielectric layer and organic semiconductor layer.…”

Section: Introductionmentioning

confidence: 99%

Thiazolothiazole‐Based Quinoidal Compounds for High‐Performance n‐Channel Organic Field‐Effect Transistors with Low‐Cost Metal Electrodes

Yan

Qiao

Ouyang

et al. 2020

Adv Elect Materials

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Thiazolothiazole‐based quinoidal molecules B1 and B2 are designed and synthesized. B1 and B2 have low‐lying lowest unoccupied molecular orbital energy levels of −4.47 and −4.41 eV, respectively. In thin films, B1 forms J‐type aggregation while B2 adopts H‐type aggregation. B1 and B2 can react with copper and silver metals and form charge transfer salts. Thin‐film transistor characteristics show both compounds display n‐channel field‐effect behavior, and the Ag and Cu source–drain electrode‐based devices exhibit similar mobility as Au source–drain electrode‐based ones. B1‐based transistors with Au, Cu, and Ag electrodes exhibit electron mobilities of 0.54, 0.45, and 0.39 cm2 V−1 s−1, respectively. The mobility of B2 is 0.061 cm2 V−1 s−1 for Au electrode‐based devices, 0.081 cm2 V−1 s−1 for Cu electrode‐based devices, and 0.09 cm2 V−1 s−1 for Ag electrode‐based devices. The self‐doping layer formed by the reaction of electrodes (Ag, Cu) and organic semiconductors (B1 and B2), at the interface of electrode/organic semiconductor is responsible for the high performance of Ag and Cu electrode‐based devices. All these results demonstrate the introduction of self‐doping layer at electrode/organic semiconductor is a general strategy to fabricate high performance transistors with low cost metals Ag and Cu as source–drain electrodes.

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Section: Introductionmentioning

confidence: 99%

Thiazolothiazole‐Based Quinoidal Compounds for High‐Performance n‐Channel Organic Field‐Effect Transistors with Low‐Cost Metal Electrodes

Yan

Qiao

Ouyang

et al. 2020

Adv Elect Materials

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“…OFET devices are generally fabricated using conventional metal oxide (e.g., SiO 2 ) gate insulators, as these have been used as a platform to study the effect of OSC molecular design and film structure on the sensitivity, selectivity, and stability of the sensing performance of OFETs 6–8. However, these materials are brittle in nature and typically require high processing temperatures that are unsuitable for fabrication on flexible plastic substrates.…”

mentioning

confidence: 99%

Robust High‐Capacitance Polymer Gate Dielectrics for Stable Low‐Voltage Organic Field‐Effect Transistor Sensors

Rahmanudin

Tate

Marcial-Hernández

et al. 2020

Adv Elect Materials

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Organic field‐effect transistors (OFETs) have shown great promise for use as chemical sensors for applications that range from the monitoring of food spoilage to the determination of air quality and the diagnosis of disease. However, for these devices to be truly useful, they must deliver reliable and stable low‐voltage operation over extended timescales. An important element to address this challenge is the development of a high‐capacitance gate dielectric that delivers excellent insulation with robust chemical resistance against the solution processing of organic semiconductors (OSC). The development of a bilayer gate dielectric containing a high‐k fluoropolymer relaxor ferroelectric layer modified at the OSC/dielectric interface with a photo‐crosslinked chemically resistant low‐k methacrylate‐based copolymer buffer layer is reported. Bottom‐gate OFET chemical sensors using this bilayer dielectric operate at low‐voltage with exceptional operational stability. They deliver reliable sensing performance over multiple cycles of ammonia exposure (2 to 50 ppm) with an estimated limit‐of‐detection below 1 ppm.

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“…Another sensor based on cyclopentadithiophene-benzothiadiazole (CDT-BTZ) copolymer also distinguished the structural isomer of VOCs (p-xylene, m-xylene, o-xylene, Hexanal, 2-Hexanone, Heptanal, 3-Heptanone) (Figure 9C-E). 86 A single sensing parameter from transfer curve of OFET could identify the VOCs over a range of concentrations. Katz et al reported an OFET-based nerve agent simulant dimethyl methylphosphonate (DMMP) sensor by using bi-layer structure.…”

Section: Other Sensors In Gas Phasementioning

confidence: 99%

Recent progress in organic field‐effect transistor‐based chem/bio‐sensors

Luo

Liu

2022

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Recent decades have witnessed the huge successes of organic field‐effect transistors (OFETs) and their applications. Among them, OFET‐based sensors have shown promising applications in the field of food safety, industrial security, environmental, and health monitoring. This is due to their advantages in solution processability, flexibility, light weight, and variety in molecular design. This review highlights recent progress in OFET‐based chemical and biological sensors in gas and liquid phase, especially for the past 5 years. The analytes range from small molecules to large biomolecules. The optimizations of OFET devices for sensors, including the semiconducting layers, dielectric layers, electrodes, and their interfaces etc., are illustrated. And their relationships with sensing parameters (sensitivity, selectivity, and response time) as well as the sensing mechanisms are given. Finally, the remaining challenges are discussed. We expect that this review can offer inspiration for future design of OFET‐based sensors.

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Organic Transistor Based on Cyclopentadithiophene‐Benzothiadiazole Donor–Acceptor Copolymer for the Detection and Discrimination between Multiple Structural Isomers

Cited by 23 publications

References 25 publications

Thiazolothiazole‐Based Quinoidal Compounds for High‐Performance n‐Channel Organic Field‐Effect Transistors with Low‐Cost Metal Electrodes

Thiazolothiazole‐Based Quinoidal Compounds for High‐Performance n‐Channel Organic Field‐Effect Transistors with Low‐Cost Metal Electrodes

Robust High‐Capacitance Polymer Gate Dielectrics for Stable Low‐Voltage Organic Field‐Effect Transistor Sensors

Recent progress in organic field‐effect transistor‐based chem/bio‐sensors

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