Carbon Monoxide Gas Sensor Based on Nanocrystalline SnO2 Thin Film Grown on Al2O3 Substrate

محورهای موضوعی : Chemistry

Amirhosein Asilian ¹ , S. Mohammadali Zanjani ² , Reza Pournajaf ³ , Reza Ebrahimi-kahrizsangi ⁴

1 - Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
2 - Smart Microgrid Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
3 - Advanced MaterialsResearch Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
4 - Advanced MaterialsResearch Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

تاریخ دریافت : 1402/11/19 تاریخ پذیرش : 1403/05/18 تاریخ انتشار : 1402/05/10

کلید واژه: Surface Morphology, Sol-Gel Synthesis, Readout Circuit, Environmental Monitoring.,

چکیده مقاله :

This study addresses the imperative for advanced gas sensors, particularly for monitoring hazardous carbon monoxide (CO), by enhancing nanocrystalline SnO₂ thin film fabrication. Control of parameters in the sol-gel synthesis process is systematically explored to mitigate crack formation and enhance SnO₂ film quality on uncoated Al₂O₃ substrates. Leveraging SnO₂'s n-type semiconductor properties, traditional thin film methods are employed, with a specific focus on overcoming drawbacks through glycerin. Among various fabrication techniques, sol-gel proves cost-effective for producing high-quality, crack-free SnO₂ layers tailored for gas sensor applications. The study evaluates sensitivity to CO gas concentrations, improving structural integrity, sensitivity, and stability. X-ray powder diffraction and SEM imaging confirm phase purity and surface morphology, ensuring the absence of impurities or cracks. Integrated with microcontroller-based circuits, the sensors exhibit rapid response and recovery times crucial for real-time gas sensing. Adding an output circuit with enhanced resolution and stability further enhances sensor performance. Results demonstrate the proposed sensor's capability for rapid response (less than 30 seconds) and recovery times (~39 seconds), crucial for real-time gas sensing. Notably, the sensors demonstrate an admirable sensitivity with a minimum detection limit of as low as 1 ppm of CO gas. Additionally, the study validates the sensor's stability and reliability during prolonged exposure to N₂ and 1% CO mixtures, highlighting its potential for personal safety detectors and environmental safety monitoring.

چکیده انگلیسی:

This study addresses the imperative for advanced gas sensors, particularly for monitoring hazardous carbon monoxide (CO), by enhancing nanocrystalline SnO₂ thin film fabrication. Control of parameters in the sol-gel synthesis process is systematically explored to mitigate crack formation and enhance SnO₂ film quality on uncoated Al₂O₃ substrates. Leveraging SnO₂'s n-type semiconductor properties, traditional thin film methods are employed, with a specific focus on overcoming drawbacks through glycerin. Among various fabrication techniques, sol-gel proves cost-effective for producing high-quality, crack-free SnO₂ layers tailored for gas sensor applications. The study evaluates sensitivity to CO gas concentrations, improving structural integrity, sensitivity, and stability. X-ray powder diffraction and SEM imaging confirm phase purity and surface morphology, ensuring the absence of impurities or cracks. Integrated with microcontroller-based circuits, the sensors exhibit rapid response and recovery times crucial for real-time gas sensing. Adding an output circuit with enhanced resolution and stability further enhances sensor performance. Results demonstrate the proposed sensor's capability for rapid response (less than 30 seconds) and recovery times (~39 seconds), crucial for real-time gas sensing. Notably, the sensors demonstrate an admirable sensitivity with a minimum detection limit of as low as 1 ppm of CO gas. Additionally, the study validates the sensor's stability and reliability during prolonged exposure to N₂ and 1% CO mixtures, highlighting its potential for personal safety detectors and environmental safety monitoring.

منابع و مأخذ:

‎[1]‎ Seiyama, Tetsuro, et al. "A new detector for gaseous components using semiconductive thin films." Analytical Chemistry 34.11 (1962): 1502-1503.
[2] Liu, Jiancheng, et al. "BNQDs sensitized in-situ growth SnO2 nanotube arrays for enhancing the gas sensing performances to isopropanol." Colloids and Surfaces A: Physicochemical and Engineering Aspects 690 (2024): 133828.
[3] Si, Renjun, et al. "The stability of SnO2 and In2O3 gas sensors to water under temperature modulation mode." Sensors and Actuators B: Chemical 393 (2023): 134222.
[4] Fan, Huiqing, et al. "Hydrothermal synthesis and their ethanol gas sensing performance of 3-dimensional hierarchical nano Pt/SnO2." Journal of Alloys and Compounds 909 (2022): 164693.
[5] Selvam, Goban Kumar Panneer, María de la Luz Olvera Amador, and Arturo Maldonado Álvarez. "Gas sensing capabilities of sol–gel dip-coated pure SnO2 thin films for CO and C3H8 detection." Journal of Materials Science: Materials in Electronics 35.24 (2024): 1621.
[6] Kong, Yulin, et al. "SnO2 nanostructured materials used as gas sensors for the detection of hazardous and flammable gases: A review." Nano Materials Science 4.4 (2022): 339-350.
[7] Xie, Renjie, Jianbin Lu, and Youqiang Liu. "Carbon monoxide gas sensing properties of SnO2 modified metal-organic skeleton derived NiO." Sensors and Actuators A: Physical 367 (2024): 115038.
[8] Simões, Agnes Nascimento, et al. "Room-temperature SnO2-based sensor with Pd-nanoparticles for real-time detection of CO dissolved gas in transformer oil." Materials Chemistry and Physics 311 (2024): 128576.
[9] Suvarna, Thirukachhi, et al. "Investigation on Sb-doped SnO2 as an efficient sensor for the detection of formaldehyde." Materials Today Communications 37 (2023): 107438.
‎[10]‎ Mendoza, Frank, et al. "Room temperature gas sensor based on tin dioxide-carbon nanotubes composite films." Sensors and Actuators B: Chemical 190 (2014): 227-233.
‎[11] De Luca, L., et al. "Hydrogen sensing characteristics of Pt/TiO2/MWCNTs composites." International journal of hydrogen energy 37.2 (2012): 1842-1851.
‎[12]‎ Aroutiounian, V. M., et al. "Manufacturing and investigations of i-butane sensor made of SnO2/multiwall-carbon-nanotube nanocomposite." Sensors and Actuators B: Chemical 173 (2012): 890-896.
‎[13]‎ Van Hieu, Nguyen, et al. "Gas-sensing properties of tin oxide doped with metal oxides and carbon nanotubes: A competitive sensor for ethanol and liquid petroleum gas." Sensors and Actuators B: Chemical 144.2 (2010): 450-456.
‎[14]‎ Baranwal, Jaya, et al. "Electrochemical sensors and their applications: A review." Chemosensors 10.9 (2022): 363.
‎[15]‎ Perumalsamy, Revathy. "A CMOS switched capacitor filter based potentiometric readout circuit for chemfet sensor." Diss. 2018.
[16]‎ Aswal, Dinesh K., and Shiv K. Gupta. Science and technology of chemiresistor gas sensors. Nova Publishers, 2007.
‎[17]‎ Graf, Markus, et al. "CMOS monolithic metal-oxide sensor system comprising a microhotplate and associated circuitry." IEEE Sensors Journal 4.1 (2004): 9-16.
‎[18]‎ Cardinali, G. C., et al. "A smart sensor system for carbon monoxide detection." Smart sensor interfaces (1997): 113-134.
[19] Asilian, Amirhosein, and S. Mohammadali Zanjani. "Design and fabrication of an amperometric CO gas sensor and a readout circuit using a low-noise trans-impedance amplifier to achieve standard analog outputs." AEU-International Journal of Electronics and Communications 171 (2023): 154864.
[20] Asilian, Amirhosein, and S. Mohammadali Zanjani. "Application of Levenberg-Marquardt Backpropagation Algorithm in Artificial Neural Network for Self-Calibration of Deflection Type Wheatstone Bridge Circuit in CO Electrochemical Gas Sensor." Majlesi Journal of Electrical Engineering 18.1 (2024): 21-32.
‎[21] Baroncini, M., et al. "A simple interface circuit for micromachined gas sensors." Sensors and Actuators A: Physical 109.1-2 (2003): 131-136.
‎[22]‎ Khakpour, Reza, M. N. Hamidon, and Guy Vandenbosch. "Design and fabrication of an auto calibration interface circuit for thick-film multi gas sensors." Sensors and Actuators 204 (2013): 48-57.
‎[23]‎ Futane, N. P., et al. "Nanocrystalline ZnO based MEMS gas sensors with CMOS ASIC for mining applications." International Journal on Smart Sensing and Intelligent Systems 1.2 (2008): 430-422.
[24] Zanjani, Sayed Mohammad Ali, and Mostafa Parvizi. "Design and simulation of a bulk driven operational trans-conductance amplifier based on CNTFET technology." Journal of Intelligent Procedures in Electrical Technology 12.45 (2021): 65-76.
‎[25]‎ Jeng, Jiann-Shing. "The influence of annealing atmosphere on the material properties of sol–gel derived SnO2: Sb films before and after annealing." Applied surface science 258.16 (2012): 5981-5986.
‎[26]‎ Ferri, Giuseppe, et al. "Full range analog Wheatstone bridge‐based automatic circuit for differential capacitance sensor evaluation." International Journal of Circuit Theory and Applications 45.12 (2017): 2149-2156.
[27] Devesa, S., et al. "Williamson-hall analysis in estimation of crystallite size and lattice strain in Bi1. 34Fe0. 66Nb1. 34O6. 35 prepared by the sol-gel method." Materials Science and Engineering: B 263 (2021): 114830.
‎[28]‎ Han, Tao, et al. "Carbon nanotubes and its gas-sensing applications: A review." Sensors and Actuators A: Physical 291 (2019): 107-143.
‎[29]‎ Beniwal, Ajay, and Vibhu Srivastava. "Sol-gel assisted nano-structured SnO2 sensor for low concentration ammonia detection at room temperature." Materials Research Express 6.4 (2019): 046421.
‎[30]‎ Kadhim, Imad H., H. Abu Hassan, and Q. N. Abdullah. "Hydrogen gas sensor based on nanocrystalline SnO2 thin film grown on bare Si substrates." Nano-Micro Letters 8 (2016): 20-28.
‎[31]‎ Lupan, Oleg, Lee Chow, and Guangyu Chai. "A single ZnO tetrapod-based sensor." Sensors and Actuators B: Chemical 141.2 (2009): 511-517.