Zinc oxide nanowire field effect transistor used as a pH sensor

Abstract:

An ion sensitive field effect transistor can outperform conventional ion-selective electrodes. Thus, a zinc oxide (ZnO) nanowire field effect transistor (NWFET) pH sensor was fabricated and measured. The sensor contained a channel with 1.7×1018 cm-3 donor concentration and 100 ZnO nanowires in parallel, each with the following dimensions: 10 μm×120 nm×20 nm. The active channel is passivated with an 18 nm Al2O3 layer. The device was measured under a controlled environment with and without pH solutions. The pH range was 3–9 with a sensitivity of 2.48 mV to 10.3 mV. The voltage sensitivity translates to a percentage value of 15%. The measurements obtained before and after the pH solution treatment demonstrate the possibility of re-use of the device by rinsing and brushing the sensing layer.

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APA

M.J., D (2024). Zinc oxide nanowire field effect transistor used as a pH sensor. Afribary. Retrieved from https://track.afribary.com/works/zinc-oxide-nanowire-field-effect-transistor-used-as-a-ph-sensor

MLA 8th

M.J., Ditshego "Zinc oxide nanowire field effect transistor used as a pH sensor" Afribary. Afribary, 30 Mar. 2024, https://track.afribary.com/works/zinc-oxide-nanowire-field-effect-transistor-used-as-a-ph-sensor. Accessed 16 Jan. 2026.

MLA7

M.J., Ditshego . "Zinc oxide nanowire field effect transistor used as a pH sensor". Afribary, Afribary, 30 Mar. 2024. Web. 16 Jan. 2026. < https://track.afribary.com/works/zinc-oxide-nanowire-field-effect-transistor-used-as-a-ph-sensor >.

Chicago

M.J., Ditshego . "Zinc oxide nanowire field effect transistor used as a pH sensor" Afribary (2024). Accessed January 16, 2026. https://track.afribary.com/works/zinc-oxide-nanowire-field-effect-transistor-used-as-a-ph-sensor

Zinc oxide nanowire field effect transistor used as a pH sensor

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