標題: Ionic pH and glucose sensors fabricated using hydrothermal ZnO nanostructures
作者: Wang, Jyh-Liang
Yang, Po-Yu
Hsieh, Tsang-Yen
Juan, Pi-Chun
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 1-Jan-2016
摘要: Hydrothermally synthesized aluminum-doped ZnO (AZO) nanostructures have been adopted in extended-gate field-effect transistor (EGFET) sensors to demonstrate the sensitive and stable pH and glucose sensing characteristics of AZO-nanostructured EGFET sensors. The AZO-nanostructured EGFET sensors exhibited the following superior pH sensing characteristics: a high current sensitivity of 0.96 mu A(1/2)/pH, a high linearity of 0.9999, less distortion of output waveforms, a small hysteresis width of 4.83 mV, good long-term repeatability, and a wide sensing range from pHs 1 to 13. The glucose sensing characteristics of AZO-nanostructured biosensors exhibited the desired sensitivity of 60.5 mu A.cm(-2).mM(-1) and a linearity of 0.9996 up to 13.9 mM. The attractive characteristics of high sensitivity, high linearity, and repeatability of using ionic AZO-nanostructured EGFET sensors indicate their potential use as electrochemical and disposable biosensors. (C) 2016 The Japan Society of Applied Physics
URI: http://dx.doi.org/10.7567/JJAP.55.01AE16
http://hdl.handle.net/11536/129692
ISSN: 0021-4922
DOI: 10.7567/JJAP.55.01AE16
期刊: JAPANESE JOURNAL OF APPLIED PHYSICS
Volume: 55
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