Material and circuit design for organic electronic vapor sensors and biosensors

Jennifer Dailey; Hui Li; Jian Song; Kalpana Besar; Hyun-June Jang; Yingli Chu; Howard E. Katz

doi:10.1117/12.2530058

30 August 2019 Material and circuit design for organic electronic vapor sensors and biosensors

Jennifer Dailey, Hui Li, Jian Song, Kalpana Besar, Hyun-June Jang, Yingli Chu, Howard E. Katz

Proceedings Volume 11096, Organic and Hybrid Sensors and Bioelectronics XII; 110960A (2019) https://doi.org/10.1117/12.2530058
Event: SPIE Organic Photonics + Electronics, 2019, San Diego, California, United States

Abstract

We summarize our recent results on material, device, and circuit structures for detection of volatile analytes in the atmosphere and proteins in aqueous solution. Common to both types of sensing goals is the design of materials that respond more strongly to analytes of interest than to likely interferents, and the use of chemical and electronic amplification methods to increase the ratio of the desired responses to the drift (signal/noise ratio). Printable materials, especially polymers, are emphasized. Furthermore, the use of multiple sensing elements, typically field-effect transistors, increases the selectivity of the information, either by narrowing the classes of compounds providing the responses, distinguishing time-dependent from dose-dependent responses, and increasing the ratio of analyte responses to environmental drifts. To increase the stability of systems used to detect analytes in solution, we sometimes separate the sensing surface from the output device in an arrangement known as a remote gate. We show that the output device may be an organic-based or a silicon-based transistor, and can respond to electrochemical potential changes at the sensing surface arising from a variety of chemical interactions.

Citation Download Citation

Jennifer Dailey, Hui Li, Jian Song, Kalpana Besar, Hyun-June Jang, Yingli Chu, and Howard E. Katz "Material and circuit design for organic electronic vapor sensors and biosensors", Proc. SPIE 11096, Organic and Hybrid Sensors and Bioelectronics XII, 110960A (30 August 2019); https://doi.org/10.1117/12.2530058

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