The Influence of Dopants on the Structural and Optical Properties of SnO2 Thin Films Deposited by PLD for Gas Sensor Application
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This study investigated the effects of different dopants (Mn, Cu, and Sb) on the characterization of SnO₂ thin films prepared by the pulsed laser deposition (PLD) technique. The pure and doped powders were prepared by the sol-gel technique and sintered at 600 оC for two hours. Structural analysis revealed a tetragonal structure in SnO2, and the addition of dopants induced lattice strain and increased dislocation density, thereby enhancing the number of active sites available for gas interactions. The morphology analysis revealed that the particles were uniformly distributed in the films and were almost spherical in shape. Optical measurements demonstrated a bandgap change, which decreased with doping from 3.83 eV to 2.8 eV. The higher sensitivity toward 50 ppm NO2 at 100°C operating temperature was 41.6% for the film doped with Sb, compared with films doped with Mn and Cu (25% and 24%). The results showed the different impacts of different dopants in enhancing the structural and optical properties of SnO2 thin films, which affect the sensor sensitivity toward NO2 gas.
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© 2023 The Author(s). Published by the College of Science, University of Baghdad. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License.
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P. Sivakumar, H. S. Akkera, T. R. Kumar Reddy, Y. Bitla, V. Ganesh, P. M. Kumar, G. S. Reddy and M. Poloju, Effect of Ti doping on structural, optical and electrical properties of SnO2 transparent conducting thin films deposited by sol-gel spin coating. Opt. Mater. 113, 110845 (2021) https://doi.org/10.2174/157341310797574934.
2. N. Y. Elamin, T. Indumathi, and E. R. Kumar, Evaluation of physicochemical and biological properties of SnO2 and Fe doped SnO2 nanoparticles. Ceram. Int. 49(2), 2388 (2023). https://doi.org/10.1016/j.ceramint.2022.09.211.
3. I. S. Naji, Characterization of CuO-doped tin dioxide thin films prepared by pulsed-laser deposition for gas-sensing applications. In: Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems. 233(1), 17 (2019). https://doi.org/10.1177/2397791418819267.
4. F. Medjaldi, A. Bouabellou, Y. Bouachiba, A. Taabouche, K. Bouatia and H. Serrar, Study of TiO2, SnO2 and nanocomposites TiO2:SnO2 thin films prepared by sol-gel method: Successful elaboration of variable–refractive index systems. Mater. Res. Express. 7(1), 016439 (2020). https://doi.org/10.1088/2053-1591/ab6c0c.
5. N. A. AbdulWahhab, Optical properties of SnO2 thin films prepared by pulsed laser deposition technique. J. Opt. 49, 41 (2020). https://doi.org/10.1007/s12596-020-00587-6.
6. Q. -H. Wu, J. Li, and S. -G. Sun, Nano SnO2 Gas Sensors. Curr. Nanosci. 6(5), 525 (2010). https://doi.org/10.2174/157341310797574934.
7. I. M. Ibrahim, I. M. Ali, R. M. Al-Haddad, and H. D. Muhammed, Influence of substrate temperature on structural and optical properties of SnO2 films, Iraqi J. Phys. 10(18), 50 (2012).
8. S. Hooshmand, P. Kassanos, M. Keshavarz, P. Duru, C. I. Kayalan, İ. Kale, and M. K. Bayazit, Wearable nano-based gas sensors for environmental monitoring and encountered challenges in optimization. Sensors. 23(20), 8648 (2023). https://doi.org/10.3390/s23208648.
9. l. Almaev, N. Yakovlev, V. Kopyev, V. Nikolaev, P. Butenko, J. Deng, A. Pechnikov, P. Korusenko, A. Koroleva and E. Zhizhin, High sensitivity low-temperature hydrogen sensors based on SnO2/κ(ε)-Ga2O3:Sn heterostructure. Chemosensors 11(6), 325 (2023). https://doi.org/10.3390/chemosensors11060325.
10. H. Kumari, Sonia, S. Chahal, Suman, P. Kumar, A. Kumar, and R. Parmar, Sol–gel synthesis and characterization of Gd-doped SnO2 nanoparticles for water treatment and spintronic applications. J. Mater. Sci.: Mater. Electron. 35(3), 212 (2024). https://doi.org/10.1007/s10854-023-11863-z.
11. S. Sambasivama, P. S. Maramb, C. V. V. Muralee Gopic, and I. M. Obaidat, Effect of erbium on the structural, morphological, and optical properties of SnO2 thin films deposited by spray pyrolysis. Optik, 202, 163596 (2020). https://doi.org/10.1016/j.ijleo.2019.163596.
12. Y. Tao, B. Zhu, Y. Yang, J. Wu, and X. Shi, The structural, electrical, and optical properties of SnO2 films prepared by reactive magnetron sputtering: Influence of substrate temperature and O2 flow rate. Mater. Chem. Phys. 250, 123129, (2020). https://doi.org/10.1016/j.matchemphys.2020.123129.
13. K. H. Kim and J. S. Chun, X-ray studies of SnO2 prepared by chemical vapour deposition. Thin Solid Films, 141(2), 287 (1986). https://doi.org/10.1016/0040-6090(86)90356-1.
14. H. Meddas, L. Abdelghani, D. Amel, B. Saliha, S. Randa, and B. Okba, Spin coating deposition of tin oxide thin films: Influence of solution concentration. J. Chem. Res. 48(5), 10 (2024). https://doi.org/10.1177/17475198241277728.
15. M. Sharma, R. N. Aljawfi, K. Kumari, K. H. Chae, S. Dalela, S. Gautam, P. A. Alvi, and S. Kumar, Investigation of local geometrical structure, electronic state and magnetic properties of PLD grown Ni doped SnO2 thin films. J. Electron Spectros. Relat. Phenomena. 232, 21 (2019). https://doi.org/10.1016/j.elspec.2019.01.002.
16. J. M. Conde Garrido, and J. M. Silveyra, A review of typical PLD arrangements: Challenges, awareness, and solutions. Opt. Lasers Eng. 168, 107677 (2023). https://doi.org/10.1016/j.optlaseng.2023.107677.
17. S. H. Rashed, A. J. Haider, S. Younis, Characterization of the copper oxide thin films deposited by DC sputtering technique. Eng. Tech. J. 32 Part (B) (4), 770 (2014).
18. J. M. Rzaij, S. O. Nawaf, and A. K. Ibrahim, A review on tin dioxide gas sensor: The role of the metal oxide doping, nanoparticles, and operating temperatures. World J. Adv. Res. Rev. 14(1), 051 (2022). https://doi.org/10.30574/wjarr.2022.14.1.0288.
19. B. A. Hasan, D.C conductivity of In2O3: SnO2 thin films and manufacturing of gas sensor. Iraqi J. Phys. 16(37), 32 (2018). https://doi.org/10.30723/ijp.v16i37.74.
20. Y. Xiong, Y. Lin, X. Wang, Y. Zhao, and J. Tian, Defect engineering on SnO2 nanomaterials for enhanced gas sensing performances. Adv. Powder Mater. 1(3), 100033 (2022). https://doi.org/10.1016/j.apmate.2022.02.001.
21. L. K. Dintle, P. V. C. Luhanga, C. Moditswe, and C. M. Muiva, Compositional dependence of optical and electrical properties of indium doped zinc oxide (IZO) thin films deposited by chemical spray pyrolysis. Phys. E Low-Dimensional Syst. Nanostructures. 99, 91 (2018). https://doi.org/10.1016/j.physe.2018.01.009.
22. R. Vinodkumar, K. J. Lethy, and D. Beena, Effect of thermal annealing on the structural and optical properties of nanostructured zinc oxide thin films prepared by pulsed laser ablation. Sol. Energy Mater. Sol Cells. 93(1), 74 (2009). https://doi.org/10.1016/j.solmat.2008.04.014.
23. S. Roguai and A. Djelloul, Structural, morphological, optical and electrical properties of Ni-doped SnO2 thin films by pneumatic spray pyrolysis method. Bull. Mater. Sci. 45, 227 (2022). https://doi.org/10.1007/s12034-022-02804-3.
24. M. Karmaoui, A. B. Jorge, P. F. McMillan, A. E. Aliev, R. C. Pullar, J. A. Labrincha, and D. M. Tobaldi, One-step synthesis, structure, and band gap properties of SnO2 nanoparticles made by a low temperature nonaqueous sol–gel technique. ACS Omega. 3(10), 13227 (2018). https://doi.org/10.1021/acsomega.8b02102.
25. S. D. Ponja, B. A. D. Williamson, S. Sathasivam, D. O. Scanlon, I. P. Parkin, and C. J. Carmalt, Enhanced electrical properties of antimony doped tin oxide thin films deposited via aerosol assisted chemical vapour deposition. J. Mater. Chem. C. 6(27), 7257 (2018). https://doi.org/10.1039/c8tc01929k.
26. S. S. Soumya, R. Vinodkumar, and N. V. Unnikrishnan, Conductivity type inversion and optical properties of aluminium doped SnO2 thin films prepared by sol-gel spin coating technique. J Sol-Gel Sci Technol. 99, 636 (2021). https://doi.org/10.1007/s10971-021-05599-7.
27. V. S. Bhati, M. Hojamberdiev, and M. Kumar, Enhanced sensing performance of ZnO nanostructures-based gas sensors: A review. Energy Rep. 6(4), 46 (2020). https://doi.org/10.1016/j.egyr.2019.08.070.
28. Y. F. Sun, S. B. Liu, F. L. Meng, J. Y. .Liu, Z. Jin, L. T. Kong, and J. H. Liu, Metal Oxide Nanostructures and Their Gas Sensing Properties: A Review. Sensors 12(3), 2610 (2012). https://doi.org/10.3390/s120302610.
29. L. Francioso, A. Forleo, S. Capone, M. Epifani, A. M. Taurino, and P. Siciliano, Nanostructured In2O3–SnO2 sol–gel thin film as material for NO2 detection. Sens. Actuators B Chem. 114(2), 646 (2006). https://doi.org/10.1016/j.snb.2005.03.124.
30. R. Kumar, Mamta, R. Kumari and V. N. Singh, SnO2-Based NO2 Gas Sensor with Outstanding Sensing Performance at Room Temperature. Micromachines. 14(4), 728 (2023). https://doi.org/10.3390/mi14040728.
31. X. Chen, Y. Shen, P. Zhou, S. Zhao, X. Zhong, T. Li, C. Han, D. Wei, D. Meng, NO2 sensing properties of one-pot-synthesized ZnO nanowires with Pd functionalization. Sens. Actuators B Chem. 280, 151 (2019). https://doi.org/10.1016/j.snb.2018.10.063.
32. W. Liu, D. Gu, X. Li, Ultrasensitive NO2 Detection Utilizing Mesoporous ZnSe/ZnO Heterojunction-Based Chemiresistive-Type Sensors. ACS Appl. Mater. Interfaces, 11(32), 29029 (2019). https://doi.org/10.1021/acsami.9b07263.
33. X. Liang, J. Zhang, L. Du, and M. Zhang, Effect of resonant tunneling modulation on ZnO/In2O3 heterojunction nanocomposite in efficient detection of NO2 gas at room temperature. Sens. Actuators B Chem. 329(32), 129230 (2021). https://doi.org/10.1016/j.snb.2020.129230.
34. B. Bhangare, N. S. Ramgir, S. Jagtap, A. K. Debnath, K. P. Muthe, C. Terashima, D. K. Aswal, S. W. Gosavi, and A. Fujishima, XPS and Kelvin probe studies of SnO2/RGO nanohybrids based NO2 sensors. Appl Surf Sci. 487, 918 (2019). https://doi.org/10.1016/j.apsusc.2019.05.176.
35. A. T. Dahham1, K. A. Aadim, and N. K. Abbas, Synthesis and Fabrication of In2O3: CdO Nanoparticles for NO2 Gas Sensor. Baghdad Sci. J. 15(3), 292 (2018). http://dx.doi.org/10.21123/bsj.2018.15.3.0292.