Synthesis and investigation of cubical shaped barium titanate and its application as opto-electronic humidity sensor
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In the current scenario, nanoscience and nanotechnology are playing a vital role in the upliftment of the quality of human life. The quantum confinement effect that arises at the nano-dimensional particles, changes the properties of the material in a drastic way. The present paper reports the successful synthesis of BaTiO3 using rotary evaporator and fabrication of sensing elements by deposition of films on flat borosilicate glass substrates using 2-methoxy ethanol and homogeneous precursor in the ratio of 1:4, 2:4, 3:4 and 4:4. These films were then annealed at 650 °C and characterized through various techniques. Morphological investigation as obtained from SEM reported the cubical clusters and the dimensionality of these clusters, decreases with increase in the concentration of 2-methoxy ethanol. An optical investigation done through UV–Vis spectrum showed the absorbance in the UV range and Tauc plot estimated the optical band gaps of 3.842, 3.854, 3.864 and 3.872 eV for the respective films. Structural information as obtained from XRD of the film having 2-methoxy ethanol and homogeneous precursor in the ratio of 4:4 gave minimum crystallite size of ~ 18 nm. Further, these films were employed as opto-electronic humidity sensor where the maximum sensitivity of the sensing elements was found as 2.15, 2.79, 3.28 and 3.67 µW/%RH respectively. Thus as the concentration of 2-methoxy ethanol in the solution increases, the properties of the material increases and hence the humidity sensing potency also increases.
Authors gratefully acknowledge the Department of Science and Technology (DST), Government of India, for financial support in form of the Indo-Russian project (Ref No. INT/RUS/RFBR/P-148) and S. Sikarwar is thankful to DST for INSPIRE AORC fellowship Grant No. DST/INSPIRE Fellowship/2014/IF140317, India.
- 3.B. Wodecka-Dus, D. Czekaj, Fabrication and dielectric properties of donor doped BaTiO3 ceramics. Arch. Metall. Mater. 54(4), 923–933 (2009)Google Scholar
- 6.M. Beytur, F. Kardaş, O. Akyıldırım, A. Özkan, B. Bankoğlu, H. Yüksek, M.L. Yola, N. Atar, A highly selective and sensitive voltammetric sensor with molecularly imprinted polymer based silver@gold nanoparticles/ionic liquid modified glassy carbon electrode for determination of ceftizoxime. J. Mol. Liq. 251, 212–217 (2018)CrossRefGoogle Scholar
- 10.J. Frejlich, Photorefractive Materials: Fundamental Concepts, Holographic Recording and Materials Characterization, 1st edn. (Willey, Uruguay, 2006), pp. 45–56Google Scholar
- 11.V.R. Chinchamalatpure, S.A. Ghosh, G.N. Chaudhari, Synthesis and electrical characterization of BaTiO3 thin films on Si(100). Mater. Sci. Appl. 1, 187–190 (2010)Google Scholar
- 13.R. Ubic, D. Suvorov, M. Sebastian, Microwave materials and their applications in the 21st century., Mater. Res. Bull. (2015). https://doi.org/10.1016/j.materresbull.2015.03.039 Google Scholar
- 14.B.C. Yadav, K.S. Chauhan, S. Singh, R.K. Sonker, S. Sikarwar, R. Kumar, Growth and characterization of sol-gel processed rectangular shaped nanostructured ferric oxide thin film followed by humidity and gas sensing. J. Mater. Sci.: Mater. Electron. 28, 5270–5280 (2017)Google Scholar
- 17.S. Sikarwar, B.C. Yadav, S. Singh, G.I. Dzhardimalieva, S.I. Pomogailo, N.D. Golubeva, A.D. Pomogailo, Fabrication of nanostructured yttria stabilized zirconia multilayered films and their optical humidity sensing capabilities based on transmission. Sens. Actuators B 232, 283–291 (2016)CrossRefGoogle Scholar
- 19.B.C. Yadav, S. Sikarwar, A. Bhaduri, P. Kumar, Synthesis, characterization and development of opto-electronic humidity sensor using copper oxide Thin Film. Int. Adv. Res. J. Sci. Eng. Technol. 2(11), 105–109 (2015)Google Scholar
- 21.B.C. Yadav, S. Sikarwar, R. Yadav, P. Chaudhary, G.I. Dzhardimalieva, N.D. Golubeva, Preparation of zinc(II) nitrate poly acryl amide (PAAm) and its optoelectronic application for humidity sensing. J. Mater. Sci.: Mater. Electron. 29, 7770–7777 (2017)Google Scholar