Review of recent advances and sensing mechanisms in solid-state organic thin-film transistor (OTFT) sensors

King, Benjamin; Lessard, Benoît H.

doi:10.1039/d3tc03611a

Cited by 2 publications

(2 citation statements)

References 195 publications

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“…OTFTs have shown promise as low-cost, disposable, and mechanically robust sensors for a variety of applications, including gas sensing, chemical sensing, biosensing, and electronic skin. 11 One of the most promising organic semiconductor families are the metal phthalocyanines (MPc, Figure 1) due to their exceptional optoelectronic properties, high thermal and photochemical stability, and ability to be easily synthesized and functionalized for specific applications. They have shown great potential in a variety of electronic devices such as photovoltaics, 12,13 OTFTs, 14,15 organic light-emitting diodes, and are also being investigated for their potential in sensing and catalytic applications.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The molecular structure, crystallinity, and film quality of the organic semiconductor layer play a significant role in determining the device’s performance, such as the field-effect mobility (μ) and threshold voltage ( V T ). OTFTs have shown promise as low-cost, disposable, and mechanically robust sensors for a variety of applications, including gas sensing, chemical sensing, biosensing, and electronic skin …”

Section: Introductionmentioning

confidence: 99%

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Organic Thin Film Transistor-Based Cannabinoid Sensors

Lessard

2024

ACS Appl. Electron. Mater.

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The legalization of cannabis for medical and recreational use has created global legal markets, resulting in economic growth and job opportunities. Δ9-Tetrahydrocannabinol (THC) and the nonpsychoactive cannabidiol (CBD) are the primary bioactive compounds from the plant Cannabis sativa and sensors for their detection are vital for monitoring the effects on patients, understanding strain effects, and ensuring accurate potency information. Current detection methods require specialized facilities, making low-cost hand-held sensors desirable for public safety, regulatory compliance, and industry efficiency. Electrical sensors, such as organic thin-film transistors (OTFTs), offer advantages over optical sensors, and metal phthalocyanines (MPcs) show promise as an active semiconducting sensing material. Through both molecular interactions and thin film reorganization, MPc-based OTFTs have been demonstrated to enable the detection and differentiation of THC and CBD both in the vapor and solution. This spotlight article discusses recent advances in the discovery and optimization of MPc based THC and CBD OTFT sensors and highlights their promising future.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Organic Thin Film Transistor-Based Cannabinoid Sensors

Lessard

2024

ACS Appl. Electron. Mater.

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Enhancing Sensitivity in Gas Detection: Porous Structures in Organic Field-Effect Transistor-Based Sensors

Lim,

Nguyen,

Lee

2024

Sensors

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Gas detection is crucial for detecting environmentally harmful gases. Organic field-effect transistor (OFET)-based gas sensors have attracted attention due to their promising performance and potential for integration into flexible and wearable devices. This review examines the operating mechanisms of OFET-based gas sensors and explores methods for improving sensitivity, with a focus on porous structures. Researchers have achieved significant enhancements in sensor performance by controlling the thickness and free volume of the organic semiconductor layer. Additionally, innovative fabrication techniques like self-assembly and etching have been used to create porous structures, facilitating the diffusion of target gas molecules, and improving sensor response and recovery. These advancements in porous structure fabrication suggest a promising future for OFET-based gas sensors, offering increased sensitivity and selectivity across various applications.

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Review of recent advances and sensing mechanisms in solid-state organic thin-film transistor (OTFT) sensors

Abstract: Organic thin-film transistors (OTFTs) have shown great potential as chemical and biological sensors for applications in environmental monitoring and diagnostics with high sensitivities and part-per-billion molar concentration limits of detection....

Cited by 2 publications

References 195 publications

Organic Thin Film Transistor-Based Cannabinoid Sensors

Organic Thin Film Transistor-Based Cannabinoid Sensors

Enhancing Sensitivity in Gas Detection: Porous Structures in Organic Field-Effect Transistor-Based Sensors

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