Hygroscopic insulator organic field effect transistor sensors
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Joshua Arthur Thesis
(PDF 31MB)
Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. |
Description
Hygroscopic insulator field effect transistors (HIFETs) are organic transistors with promising characteristics for biosensing applications. However, their fundamental sensing mechanisms are not yet fully understood. This thesis explores HIFET sensors through detailed electrical and optical characterisation, providing vital insights into the distinct mechanisms by which HIFETs detect biologically relevant chemicals. Hydrogen peroxide, a by-product of enzymatic reactions, oxidises the organic semiconductor, modulating the output current. Ionic solutions, such as KCl, NaCl and HCl, modulate the current by changing double layer capacitance. These insights are foundational for the continued development of HIFETs as effective multipurpose biosensing platforms.
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| ID Code: | 232689 |
|---|---|
| Item Type: | QUT Thesis (PhD by Publication) |
| Supervisor: | Yambem, Soniya, Pandey, Ajay, & Woodruff, Mia |
| Keywords: | Organic, transistor, hygroscopic, sensor, biosensor, gate electrode, hydrogen peroxide, H2O2, ion, OFET |
| DOI: | 10.5204/thesis.eprints.232689 |
| Divisions: | Current > QUT Faculties and Divisions > Faculty of Science Current > Schools > School of Chemistry & Physics |
| Institution: | Queensland University of Technology |
| Deposited On: | 05 Aug 2022 03:03 |
| Last Modified: | 05 Aug 2022 03:03 |
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