Yoo, Tae-Hee Moon, Hi Gyu Wang, Byung-Yong Sang, Byoung-In Angadi, Basavaraj Oh, Young-Jei Choi, Won Kook Kang, Chong-Yun Hwang, Do Kyung 2024-01-19T23:34:35Z 2024-01-19T23:34:35Z 2021-09-03 2018-01 0925-4005 https://pubs.kist.re.kr/handle/201004/121886 We report on InGaZnO (IGZO) thin film transistors (TFTs)-based bio-chemical sensors which can detect the chemical/biological species. As novel sensing platform, the IGZO TFT with Ag nanowire (NW) mesh showed pronounced output voltage changes responding to all analytes of H2O2, b-d-glucose, d-glucono-1,5-Lactione, and lactic acid, which are reproducible and reversible. Herein, porous Ag NW-functionalized top gate electrode plays a major role in sensing platform for enhanced sensing capability in aqueous medium. Moreover, these top gate geometry serve as a stable backplane for electrical modulation. As a result, analytes solutions become acidic or basic and such pH alterations induce significant turn-on voltage shifts on our devices. For implementation of a resistive load inverter, the output sensing voltage signals can be directly extracted, and such signals are reproducible and reversible. The proposed IGZO TFTs with Ag NW mesh top gate electrode based sensing platform pave the way for development of portable and reusable real-time non-destructive label-free chemical/biological sensors. English Elsevier BV InGaZnO transistor based on porous Ag nanowire-functionalized gate electrode for detection of bio-relevant molecules Article 10.1016/j.snb.2017.07.022 1 Sensors and Actuators, B: Chemical, v.254, pp.36 - 43 Sensors and Actuators, B: Chemical 254 36 43 N scie scopus 000413308000006 2-s2.0-85024403463 Chemistry, Analytical Electrochemistry Instruments & Instrumentation Chemistry Electrochemistry Instruments & Instrumentation Article THIN-FILM TRANSISTORS FREE DNA DETECTION ROOM-TEMPERATURE TRANSPARENT SENSOR BIOSENSORS H2O2 InGaZnO semiconductor Ag nanowire Chemical/biological sensing platform