Poly (3, 4-Ethylenedioxythiophene) - Poly (4-Styrenesulfonate) for Humidity Sensing Using Ink-jet Printing Technique on Flexible Polyimide Substrate

Sensors & Transducers

Hee C. LIM¹  John F. FEDERICI¹  Yew L. HOR¹  Yew Fong HOR¹  James L. ZUNINO III² 

[1] New Jersey Institute of Technology, Physics Department, Tiernan Hall, 161 Warren St., Newark;U.S. Army RDE Command, AMSRD-AAR-MEE-M, Bldg 60, Picatinny Arsenal, NJ, 07806;

关键词: Flexible substrate;    Humidity sensor;    Conducting polymer;   

DOI  :  

来源: DOAJ

【 摘 要 】

A fully reversible and repeatable flexible capacitive humidity sensor is realized from design concept to reality via an ink-jet deposition system. The humidity sensor is ink-jet fabricated with aqueous Poly (3, 4-ethylenedioxythiophene) - poly (4-styrenesulfonate), PEDOT: PSS ink and Toluene suspended nano Ag particles of 5 nm sized solution. The humidity is monitored by changes in the sensor’s effective inter-digitated electrodes capacitance. The humidity sensor exhibits sensitivity with resolution and accuracy of 0.0067 nF/ %RH and 1% RH, respectively, towards the relative environmental moisture concentrations of 32% RH to 100% RH. A fast absorption time of < 1 second and desorption time of approximately 3 second for the humidity sensor is observed.

【 授权许可】

Unknown