Research Progress of Organic Field‐Effect Transistor Based Chemical Sensors

Shen, Zhengqi; Huang, Wei; Li, Li; Li, Huizi; Huang, Jia; Cheng, Jiangong; Fu, Yanyan

doi:10.1002/smll.202302406

Cited by 7 publications

(4 citation statements)

References 82 publications

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“…In recent years, researchers have pursued a strategy of self-assembling the rigid conjugated skeleton of the polymer into nanoporous-like structures through micro-regulation. This approach is advantageous for the sensing performance of the device because the enhanced nanoporous crystallinity within the polymer chain skeleton of the active layer effectively improves carrier mobility [57][58][59][60][61][62][63][64].…”

Section: P3ht Nanoporous Structure In Gas Detectionmentioning

confidence: 99%

Recent Progress in Gas Sensors Based on P3HT Polymer Field-Effect Transistors

Cheng,

Wang,

Zhang

et al. 2023

Sensors

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In recent decades, the rapid development of the global economy has led to a substantial increase in energy consumption, subsequently resulting in the emission of a significant quantity of toxic gases into the environment. So far, gas sensors based on polymer field-effect transistors (PFETs), a highly practical and cost-efficient strategy, have garnered considerable attention, primarily attributed to their inherent advantages of offering a plethora of material choices, robust flexibility, and cost-effectiveness. Notably, the development of functional organic semiconductors (OSCs), such as poly(3-hexylthiophene-2,5-diyl) (P3HT), has been the subject of extensive scholarly investigation in recent years due to its widespread availability and remarkable sensing characteristics. This paper provides an exhaustive overview encompassing the production, functionalization strategies, and practical applications of gas sensors incorporating P3HT as the OSC layer. The exceptional sensing attributes and wide-ranging utility of P3HT position it as a promising candidate for improving PFET-based gas sensors.

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Section: P3ht Nanoporous Structure In Gas Detectionmentioning

confidence: 99%

Recent Progress in Gas Sensors Based on P3HT Polymer Field-Effect Transistors

Cheng,

Wang,

Zhang

et al. 2023

Sensors

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“…Organic thin-film transistors (OTFTs) have garnered significant attention as promising candidates for wearable, flexible and large area electronics [1][2][3][4][5][6][7][8][9][10][11][12]. Recently, carrier mobility in OTFTs has surpassed the benchmark of 10 cm 2 Vs −1 through the synthesis of novel organic semiconductor materials and the refinement of device * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Evaluating mobility extraction reliability in non-ideal organic transistors utilizing weak epitaxy-grown pentacene films

Tang,

Yuan,

Wang

2024

J. Phys. D: Appl. Phys.

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Organic thin-film transistors (OTFTs) have exhibited enhanced carrier mobilities, albeit often accompanied by non-ideal electrical characteristics, posing challenges in accurately assessing device performance. Therefore, it is critical to understand the reliability of mobility values derived from these non-ideal current-voltage curves. In this study, high-quality pentacene films and their OTFTs were fabricated by using organic weak-epitaxy growth technology. We focused on investigating the relationship between effective mobilities and contact resistance by varying the interlayer thicknesses of MoO3 while maintaining the optimized semiconductor layer unchanged. An inverse correlation between the reliability factors and claimed mobilities is identified. For OTFTs with moderate contact resistance, the effective mobility exhibited minimal variation, remaining within a narrow 10% margin, accompanied high reliability factor. These results indicated the relaibility of mobility extraction. Notably, the optimal thickness of MoO3 ranged between 2.0 to 3.0 nm. In contrast, a thicker MoO3 layer significantly decreased the reliability factor due to a high contact resistance, thereby rendering the effective mobility unreliable. Our works underscore the robustness of the estimation method for OTFTs featuring moderate contact resistance, providing guidance for the evaluation of material and device performance.

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“…Advances in optoelectronic devices, thin-film transistors (FETs), light-emitting diodes (LEDs), or solar cells depend on the availability of high-performance semiconductors. In this respect, organic materials offer design and synthetic advantages, which include low-cost production, tunability, flexibility, and energetic efficiency .…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrogen Bonding and Chirality in Star-Shaped Molecules with Peripheral Triphenylamines: Liquid Crystal Semiconductors and Gels

Martínez-Bueno,

Martín,

Ortega

et al. 2024

Chem. Mater.

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Organic semiconductors with well-defined architectures pose a suitable alternative to amorphous silicon-based inorganic semiconductors. Encouraged by the development of organic semiconductors based on columnar liquid crystals, herein, we report on a family of C 3 -symmetric star-shaped mesogens based on triphenylamine (TPA), a functional unit with strong electron donor character. Highly stable columnar phases with high hole mobility values were obtained out of this nonplanar functional unit, and this was achieved by using flexible amide spacers to join the TPA units to a tris(triazolyl)triazine (T) star-shaped core, allowing the formation of intermolecular hydrogen bonds. The presence of hydrogen bonds results in a stabilization of the columnar architectures either in bulk or in the presence of solvents by reinforcing π-stacking and van der Waals interactions, as deduced by Fourier-transform infrared (FTIR) and X-ray diffraction (XRD) studies. Furthermore, the introduction of a stereogenic center in the flexible spacer prompts the formation of chiral aggregates in the liquid crystal state and in the organogel formed in 1-octanol, as demonstrated by circular dichroism spectroscopy.

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Research Progress of Organic Field‐Effect Transistor Based Chemical Sensors

Cited by 7 publications

References 82 publications

Recent Progress in Gas Sensors Based on P3HT Polymer Field-Effect Transistors

Recent Progress in Gas Sensors Based on P3HT Polymer Field-Effect Transistors

Evaluating mobility extraction reliability in non-ideal organic transistors utilizing weak epitaxy-grown pentacene films

Effect of Hydrogen Bonding and Chirality in Star-Shaped Molecules with Peripheral Triphenylamines: Liquid Crystal Semiconductors and Gels

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