Fully integrated ultra-sensitive electronic nose based on organic field-effect transistors

Авторы: Anisimov Daniil S., Chekusova Victoria P., Trul Askold A., Abramov Anton A., Borshchev Oleg V., Agina Elena V., Ponomarenko Sergey A.
Журнал: Scientific reports
Том: 11
Номер: 1
Год издания: 2021
Издательство: Nature Publishing Group
Местоположение издательства: United Kingdom
DOI: 10.1038/s41598-021-88569-x
Аннотация: Modern solid‑state gas sensors approaching ppb‑level limit of detection open new perspectivesfor process control, environmental monitoring and exhaled breath analysis. Organic field‑effecttransistors (OFETs) are especially promising for gas sensing due to their outstanding sensitivities, lowcost and small power consumption. However, they suffer of poor selectivity, requiring developmentof cross‑selective arrays to distinguish analytes, and environmental instability, especially in humidair. Here we present the first fully integrated OFET‑based electronic nose with the whole sensor array located on a single substrate. It features down to 30 ppb limit of detection provided by monolayerthick active layers and operates in air with up to 95% relative humidity. By means of principalcomponent analysis, it is able to discriminate toxic air pollutants and monitor meat product freshness.The approach presented paves the way for developing affordable air sensing networks for the Internetof Things.
Добавил в систему: Труль Аскольд Альбертович

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