A reference-less pH sensor based on an organic field effect transistor with tunable sensitivity.
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| Title: | A reference-less pH sensor based on an organic field effect transistor with tunable sensitivity. |
|---|---|
| Authors: | Spanu, A.1, Viola, F.1, Lai, S.1, Cosseddu, P.1, Bonfiglio, A.1,2, Ricci, P.C.3 |
| Source: | Organic Electronics. Sep2017, Vol. 48, p188-193. 6p. |
| Subjects: | Organic field-effect transistors, Standard hydrogen electrode, Organic semiconductors |
| Abstract: | Despite their great potentiality, ISFET-like devices generally suffer from an intrinsic limitation in sensitivity, the so-called Nernst limit. Moreover, the high costs, the restricted range of employable materials associated to the silicon technology, and the need for a reference electrode, have reduced the applicability of such devices in the bio-sensing field. In this work, we show how a reference-less pH sensor based on an organic semiconductor device, called Organic Charge-Modulated Field-Effect Transistor (OCMFET), besides being low cost, flexible, and transparent, shows a super-nernstian sensitivity with no need of any chemical modification of the sensing area. Moreover, thanks to its peculiar transduction principle and structure, the device sensitivity can be easily tuned by acting on geometry-related parameters of the device itself, introducing an interesting alternative approach for the realization of highly sensitive, reference-less, and low-cost devices for a wide range of bio-sensing applications. [ABSTRACT FROM AUTHOR] |
| Copyright of Organic Electronics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 124076413 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.orgel.2017.06.010 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 188 Subjects: – SubjectFull: Organic field-effect transistors Type: general – SubjectFull: Standard hydrogen electrode Type: general – SubjectFull: Organic semiconductors Type: general Titles: – TitleFull: A reference-less pH sensor based on an organic field effect transistor with tunable sensitivity. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Spanu, A. – PersonEntity: Name: NameFull: Viola, F. – PersonEntity: Name: NameFull: Lai, S. – PersonEntity: Name: NameFull: Cosseddu, P. – PersonEntity: Name: NameFull: Bonfiglio, A. – PersonEntity: Name: NameFull: Ricci, P.C. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 15661199 Numbering: – Type: volume Value: 48 Titles: – TitleFull: Organic Electronics Type: main |
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