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ITO 나노입자 필름을 이용한 수중 금속이온 검출 센서에 대한 연구
전준수(Junsu Jeon),안상수(Sangsu An),이창한(Changhan Lee),조영지(Youngji Cho),배찬영(Chanyoung Bae),김동준(Dongjun Kim),송유진(Yujin Song),한민철(Mincheol Han),장지호(Jiho Chang),하윤수(Yunsu Ha),박재진(Jaejin Park),이문진(Moonjin Lee) 한국물리학회 2024 새물리 Vol.74 No.1
In order to use heavy metals in water for detection, a film using ITO (Indium Tin Oxide) nanoparticles was produced, and a chemoresistive sensor was produced using it to confirm the metal ion detection performance. The ITO film was produced by mixing nanoparticles and organic binders to produce paste and printing it on a PET substrate. The sensor was manufactured by forming Ag electrodes on both ends of the manufactured film, and the detection characteristics of the sensor were confirmed using five (Mn, Zn, Se, Sn, Ni) metal ion aqueous solutions. It was verified that the sensor resistance linearly increased according to the increase in the concentration of the metal ion, and that the concentration and resistance change linearly. The sensor’s performance was evaluated using the sensor’s response (ΔR), limit of detection, response time, linearity, error, and detection range.
표면저항형 ITO 필름 센서의 표면처리 공정에 관한 연구
김동준(Dongjun Kim),안상수(Sangsu An),이창한(Changhan Lee),조영지(Youngji Cho),한민철(Mincheol Han),배찬영(Chanyoung Bae),전준수(Junsu Jeon),송유진(Yujin Song),장지호(Jiho Chang),하윤수(Yun-Su Ha),박재진(Jae-Jin Park),이문진(Moonjin Lee 한국물리학회 2024 새물리 Vol.74 No.1
A sensor that can measure the concentration of harmful chemicals in water using changes in surface resistance was fabricated using a metal oxide nanoparticle film, and the changes in sensor performance due to surface treatment processes were investigated. The influence of the surface residue of the organic binder used for film printing was focused on, and the changes in the properties of the film and sensor were observed. To remove the residual binder, a cleaning process was additionally introduced to the existing sintering process, and the changes in the properties of the ITO:CB film were observed according to the cleaning time, and the surface treatment time was optimized. It was confirmed that the sensor response improved as the cleaning time increased, and the optimal surface treatment conditions were determined to ensure good sensor operation.