The Effect of SnO2 Mixture on a PVA-Based Thick Film Relative Humidity Sensor

Goib Wiranto, Supeno Martadi, M. Amin Sulthoni, I Dewa Putu Hermida, Yudi Y. Maulana, Slamet Widodo, Deni P. Kurniadi, Pamungkas Daud

Abstract


In this research, thick film technology has been used to design and fabricate relative humidity sensors with Polyvinyl Alcohol (PVA) as the sensing layer. The design was optimized to produce an ideal geometry according to the limitations of thick film technology. The sensor fabrication process used screen printing techniques on Alumina (Al2O3) substrate with Silver (Ag) as the electrode material. SnO2 was added to the PVA sensing layer with variations in the composition of 1:1 and 1:2. FTIR analysis showed that the addition of SnO2 did not affect the structure of the PVA, which indicated that there was no chemical reaction between PVA and SnO2. The deposition of the sensing layer was carried out using spin coating method, and the fabricated sensors were then tested by varying 5 humidity points inside a chamber with a hygrometer as a reference. Based on the test results, it was found that the sensors showed responses to humidity variation in the form of changes in resistance values. When the humidity in the chamber increased, the sensor resistance value decreased. The addition of SnO2 could reduce the relatively high resistance value of the PVA-based humidity sensor and also increase the sensor's time response to humidity variation. However, the humidity sensor’s sensitivity decreased for the higher composition of SnO2. With this technique, a simple yet stable humidity sensor could be fabricated using thick-film technology with a wide range of potential applications.

Keywords


Relative humidity sensor; thick film technology; screen printing; spin coating; PVA; SnO2.

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References


A. Popa et al., “An intelligent IoT-based food quality monitoring approach using low-cost sensors,” Symmetry, vol. 11, no. 3, 2019, doi: 10.3390/sym11030374.

J. Rodríguez-Robles, Á. Martin, S. Martin, J. A. Ruipérez-Valiente, and M. Castro, “Autonomous sensor network for rural agriculture environments, low cost, and energy self-charge,” Sustain., vol. 12, no. 15, 2020, doi: 10.3390/SU12155913.

G. Wang et al., “Fast-response humidity sensor based on laser printing for respiration monitoring,” RSC Adv., vol. 10, no. 15, pp. 8910–8916, 2020, doi: 10.1039/c9ra10409g.

C. He et al., “Real-time humidity measurement during sports activity using optical fibre sensing,” Sensors, vol. 20, no. 7, pp. 1–12, 2020, doi: 10.3390/s20071904.

S. F. Shaikh et al., “Continuous hydrothermal flow-inspired synthesis and ultra-fast ammonia and humidity room-temperature sensor activities of WO3 nanobricks,” Mater. Res. Express, vol. 7, no. 1, 2020, doi: 10.1088/2053-1591/ab67fc.

A. Enjin, “Humidity sensing in insects — from ecology to neural processing,” Curr. Opin. Insect Sci., vol. 24, no. October, pp. 1–6, 2017, doi: 10.1016/j.cois.2017.08.004.

R. Arun Chakravarthy, M. Bhuvaneswari, and M. Arun, “IoT based environmental weather monitoring and farm information tracking system,” J. Crit. Rev., vol. 7, no. 7, pp. 307–310, 2020, doi: 10.31838/jcr.07.07.49.

H. Farahani, R. Wagiran, and M. N. Hamidon, “Humidity sensors principle, mechanism, and fabrication technologies: A comprehensive review,” Sensors, vol. 14, no. 5, pp. 7881 – 7939, 2014, doi: 10.3390/s140507881.

G. B. Crochemore, A. R. P. Ito, C. A. Goulart, and D. P. F. de Souza, “Identification of humidity sensing mechanism in MgAl2O4 by impedance spectroscopy as function of relative humidity,” Mater. Res., vol. 21, no. 4, 2018, doi: 10.1590/1980-5373-mr-2017-0729.

M. V. Nikolic et al., “Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing,” Mater. Sci. Eng. B Solid-State Mater. Adv. Technol., vol. 257, no. April, p. 114547, 2020, doi: 10.1016/j.mseb.2020.114547.

J. Majewski, “Low humidity characteristics of polymer-based capacitive humidity sensors,” Metrol. Meas. Syst., vol. 24, no. 4, pp. 607–616, 2017, doi: 10.1515/mms-2017-0048.

B. Deshkulkarni, L. R. Viannie, S. V. Ganachari, N. R. Banapurmath, and A. Shettar, “Humidity sensing using polyaniline/polyvinyl alcohol nanocomposite blend,” IOP Conf. Ser. Mater. Sci. Eng., vol. 376, no. 1, 2018, doi: 10.1088/1757-899X/376/1/012063.

Muhammad Tariq Saeed Chani et al., “Humidity sensor based on orange dye and graphene solid electrolyte cells,” Russ. J. Electrochem., vol. 55, no. 12, pp. 1391–1396, 2019, doi: 10.1134/S1023193519120036.

T. Li et al., “Porous ionic membrane based flexible humidity sensor and its multifunctional applications,” Adv. Sci., vol. 4, no. 5, 2017, doi: 10.1002/advs.201600404.

A. Salamat and T. Islam, “Fabrication of an anodized porous alumina relative humidity sensor with improved sensitivity,” Instrum. Sci. Technol., vol. 48, no. 2, pp. 128–145, 2020, doi: 10.1080/10739149.2019.1662803.

M. V. Nikolic et al., “Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing,” Int. J. Appl. Ceram. Technol., vol. 16, no. 3, pp. 981–993, 2019, doi: 10.1111/ijac.13190.

M. V. Nikolic et al., “Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films,” Sensors Actuators, B Chem., vol. 277, pp. 654–664, 2018, doi: 10.1016/j.snb.2018.09.063.

H. Liu et al., “Humidity sensors with shielding electrode under interdigitated electrode,” Sensors, vol. 19, no. 3, 2019, doi: 10.3390/s19030659.

Z. Harith, H. Adnan Abdullah Zain, M. Batumalay, and S. Wadi Harun, “A study on relative humidity sensors using PVA and PMMA coating,” J. Phys. Conf. Ser., vol. 1371, no. 1, 2019, doi: 10.1088/1742-6596/1371/1/012027.

S. Automation, G. R. Biswal, S. Member, P. Mohanty, and K. J. Akram, “Design and fabrication of an inexpensive capacitive humidity sensor for smart sub-station automation,” IEEE Sens. J., vol. 20, no. 12, pp. 6215–6223, 2020.

V. S. Turkani et al., “A highly sensitive printed humidity sensor based on a functionalized MWCNT/HEC composite for flexible electronics application,” Nanoscale Adv., vol. 1, no. 6, pp. 2311–2322, 2019, doi: 10.1039/c9na00179d.

A. Rivadeneyra et al., “Carbon dots as sensing layer for printed humidity and temperature sensors,” Nanomaterials, vol. 10, no. 12, p. 2446, 2020, doi: 10.3390/nano10122446.

D. Antuña-Jiménez, M. B. González-García, D. Hernández-Santos, and P. Fanjul-Bolado, “Screen-printed electrodes modified with metal nanoparticles for small molecule sensing,” Biosensors, vol. 10, no. 2, pp. 1–22, 2020, doi: 10.3390/bios10020009.

M. Awais, M. U. Khan, A. Hassan, J. Bae, and T. E. Chattha, “Printable highly stable and superfast humidity sensor based on two dimensional molybdenum diselenide,” Sci. Rep., vol. 10, no. 1, pp. 1–13, 2020, doi: 10.1038/s41598-020-62397-x.

J. R. McGhee, J. S. Sagu, D. J. Southee, P. S. A. Evans, and K. G. Upul Wijayantha, “Printed, fully metal oxide, capacitive humidity sensors using conductive indium tin oxide inks,” ACS Appl. Electron. Mater., vol. 2, no. 11, pp. 3593–3600, 2020, doi: 10.1021/acsaelm.0c00660.

T. Yonehara and H. Goto, “Synthesis of polyaniline/scarlet 3R as a conductive polymer,” Polymers, vol. 12, no. 3, 2020, doi: 10.3390/polym12030579.

M. Vishwas, K. N. Rao, D. N. Priya, A. M. Raichur, R. P. S. Chakradhar, and K. Venkateswarlu, “Effect of TiO2 nano-particles on optical, electrical and mechanical properties of poly (vinyl alcohol) films,” Procedia Mater. Sci., vol. 5, pp. 847–854, 2014, doi: 10.1016/j.mspro.2014.07.370.




DOI: http://dx.doi.org/10.18517/ijaseit.12.3.14869

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