Novel fully transparent and flexible humidity sensor

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题名:	Novel fully transparent and flexible humidity sensor
作者:	Su, PG (Su, Pi-Guey) Tseng, JY (Tseng, Jiun-Yi) Huang, YC (Huang, Yen-Chen) Pan, HH (Pan, Hsin-Hung) Li, PC (Li, Pin-Chou)
贡献者:	化學系
关键词:	Transparent Flexible Humidity sensor Gallium-doped ZnO (GZO) Copolymer
日期:	2009
上传时间:	2011-11-30 16:20:58 (UTC+8)
摘要:	A novel fully transparent and flexible impedance-type humidity sensor was fabricated by depositing a gallium-doped ZnO (GZO) thin film on a flexible substrate (polyester film; PET) as a transparent pair of comb-like electrodes, and then coating the PET substrate with a copolymer of methyl methacrylate and [3-(methacrylamino)propyl] trimethyl ammonium chloride (MAPTAC) (poly-MMA/MAPTAC) as a sensing film. The sensor had high transmittance and good flexibility. This flexible humidity sensor also had acceptable sensitivity and a highly linear (Y= -0.0221X+ 6.9620; R(2) =0.9976) between logarithmic impedance (log Z) and RH in the range 30-90% RH. low hysteresis (at 4.8% RH), a good response time (70 s), a recovery time (90 s). and long-term stability (55 days at least), measured at 1 V, 1 kHz and 25 degrees C. Other sensing properties such as the effects of applied voltage, frequency and ambient temperature were also studied. (C) 2009 Elsevier B.V. All rights reserved.
關聯:	SENSORS AND ACTUATORS B-CHEMICAL 卷: 137 期: 2 頁數: 496-500
显示于类别:	[化學系所] 期刊論文

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