Preparation of water-durable humidity sensor by attachment of polyelectrolyte membrane to electrode substrate by photochemical crosslinking reaction

Gong, Myoung‐Seon; Kim, Jae-Uk; Kim, Jong-Gyu

doi:10.1016/j.snb.2010.04.017

Cited by 43 publications

(19 citation statements)

References 42 publications

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“…Particularly, the development of an excellent humidity sensing material is an important aspect in the creation of a high-powered humidity sensor. In the past decades, many kinds of materials including polymer [1][2][3][4], electrolytes [5][6][7], organic-inorganic hybrid composites [8][9][10][11], photonic crystal [12][13][14] and metal oxides or ceramic [15][16][17][18][19][20] have been explored to fabricate humidity sensing detectors. But each kind of material cannot completely meet all requirements desired for an excellent sensor such as high sensitivity, good linearity, quick response-recovery and long-term stability.…”

Section: Introductionmentioning

confidence: 99%

Humidity sensing properties of MoO3-NiO nanocomposite materials

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Humidity sensing properties of MoO3-NiO nanocomposite materials

et al. 2015

Ceramics International

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“…This is due to the polarizability of the sensor at higher voltages at dc or low ac mode [30]. It was considered that the polarization effect causes the formation of the electrolysis products and alter the electrical nature of the electro-active PSDA polymer and the film morphology [31].…”

Section: Frequency and Voltage Characteristics Of The Sensor Responsesmentioning

confidence: 99%

A STUDY on the sensitivity and selectivity properties of Polymer based gas-vapor sensors

Cankurtaran

Yazıcı

Karaman³

2016

J. Turk. Chem. Soc., Sect. A: Chem.

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Abstract:In this study, the water soluble poly (diphenylaminesulfonic acid) (PSDA) and the diblock copolymer of PSDA with poly(ethylene glycol) (PEG) were used to construct the interdigitated film electrodes (IDEs). Their responses against humidity and various solvent vapors were investigated by impedance measurements. Sorption and desorption behaviors of the solvents were determined by simultaneous registration of the impedance (Z) and the resistive (R, resistance) and capacitive (X, reactance) components of the Z under different potential bias and alternating current (ac) frequencies. The sensor responses were discussed considering the polar/non-polar and polarizability properties of the polymers and solvents. The effect of ac frequency and potential bias on the sensitivity and selectivity of the sensors were discussed. It was found that the solvent polarity is the primary effect on the electrical conductance and capacitance of both PSDA homopolymer and PSDA-b-PEG block copolymer. The results supported that the dipolarity-polarizability properties of solvents have also a critical role on sensor response at low ac frequencies. The more polarizable solvents gave higher sensor responses at lower ac frequencies. The equilibrium response of the PSDA based sensor was correlated with the dielectric constant of the solvents. The values of Z and R of PSDA film under saturated solvent vapors at 1 kHz ac frequency were linearly correlated (R 2 was 0.955, 0.993 and 0.957 for Z, R and X, respectively, in semi-logarithmic scale) with the values of the dielectric constants of the solvents, except water. A similar correlation (R 2 = 0.996) was obtained by using the R values of the PSDA film at 100 kHz ac frequency. In the case of PSDA-b-PEG polymer film, it was also possible to establish an almost linear correlation (R 2 =0.943) between the R at 100 kHz ac frequency and the values of the dielectric constants of the solvents, except acetone and water. Consequently, it was found that the applied ac frequency was distinctive on both the sensitivity and selectivity of the studied sensor.

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“…In the past decades, many kinds of materials including polymer [3][4][5][6], electrolytes [7][8][9], organic-inorganic hybrid composites [10][11][12][13], photonic crystal [14][15][16] and metal oxides or ceramic [17][18][19][20][21][22] have been explored to fabricate humidity sensing detectors. But each kind of material can not completely meet all requirements desired for an excellent sensor such as high sensitivity, good linearity, quick response-recovery, and long-term stability.…”

Section: Introductionmentioning

confidence: 99%

Humidity sensing properties of CeO2–NiO nanocomposite materials

Zhang

wei³

et al. 2015

J Mater Sci: Mater Electron

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CeO 2 -NiO composites were prepared by a simple grind method followed by a heat-treatment process and characterized by X-ray diffraction, transmission electron microscope and nitrogen adsorption-desorption test. Humidity sensing properties of CeO 2 -NiO composites with different mass ratios were studied. The optimal result was obtained for the sample with CeO 2 -NiO mass ratio of 0.5. The impedance of the sensor changes more than five orders of magnitude within the humidity range from 11 to 95 % relative humidity (RH) at 100 Hz. The response and recovery time are about 3 and 19 s respectively, and the maximum hysteresis is \2 % RH. The results indicate the potential applications of CeO 2 -NiO composite (CeO 2 -NiO mass ratio of 0.5) for fabricating high performance humidity sensors.

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Preparation of water-durable humidity sensor by attachment of polyelectrolyte membrane to electrode substrate by photochemical crosslinking reaction

Cited by 43 publications

References 42 publications

Humidity sensing properties of MoO3-NiO nanocomposite materials

Humidity sensing properties of MoO3-NiO nanocomposite materials

A STUDY on the sensitivity and selectivity properties of Polymer based gas-vapor sensors

Humidity sensing properties of CeO2–NiO nanocomposite materials

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