Confined Growth of WO₃ for High-Performance Electrochromic Device

Abstract:

Nanoscale material world attracted researchers because of their outstanding properties and prospective novel applications. Tungsten trioxide semiconductor is one of the fundamental functional materials due to its versatile application as gas sensors, solar cells, and smart windows. Confined growth of the metal oxide nanostructures can tune the electrical and optical properties for modern device application. The management of morphology is a challenge to investigate the ultimate performance. In this paper, self-assembled growth of four different tungsten trioxide nanostructures were carried using a different structure directing agents through either co-precipitation or hydrothermal techniques. The monoclinic spherical and rod-like WO₃ nanostructures were obtained by acid precipitation method. WO₃ nanocuboids and nanofibers were synthesized hydrothermally using HBF₄ and NaCl as structure directing reagents to attain monoclinic and hexagonal crystal phases, respectively. Analytical techniques like XRD, TEM, and FESEM imaging methods were used to confirm the phase and morphology. All the nanopowders were calculated to have similar band gap energy at visible wavelength. A simple dip coated WO₃/ITO fabricated electrode was used as a reference electrode to carry out the electrochemical measurements for all nanopowders. The evaluated properties suggested the plausible use of WO₃ nanofibers for high efficient electrochromic device.

• Periodical: Key Engineering Materials (Volume 659)
• Pages: 583-587
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.659.583
• Online since: August 2015
• Authors: Sangeeta Adhikari, Debasish Sarkar*
• Keywords: Electrochromism, Nanostructures, TEM, WO₃

References

[1] D. Chen, L. Gao, A. Yasumori, K. Kuroda, Y. Sugahara, Small 4 (2008) 1813-1822.

[2] D. Chen, H. Wang, R. Zhang, L. Gao, Y. Sugahara, A. Yasumori, J. Ceram. Process. Res. 9 (2008) 596–600.

[3] B. I. Kharisov, Recent Pat. Nanotechnol. 2 (2008) 190–200.

[4] F. Tonus, V. Fuster, G. Urretavizcaya, F. J. Castro, J. L. Bobet, Int. J. Hydrogen Energy 34 (2009) 3404–4309.

[5] D. J. Ham, A. Phuruangrat, S. Thongtem, J. S. Lee, Chem. Engg. J., 165 (2010) 365-369.

[6] M. Breedon, P. Spizzirri, M. Taylor, J. D. Plessis, D. McCulloch, J. Zhou, L. Yu, Z. Hu, C. Rix, Crystal Growth and Design 10 (2010) 430-434.

DOI: 10.1021/cg9010295

[7] X. Li, T. Lou, X. Sun, Y. Li, Inorganic Chemistry 43 (2004) 5442-5446.

[8] T. Kida, A. Nishiyama, M. Yuasa, K. Shimanoe, N. Yamazoe, Sensors and Actuators B: Chemical 135 (2009) 568-573.

DOI: 10.1016/j.snb.2008.09.056

[9] S. Rajagopal, D. Nataraj, D. Mangalaraj, Y. Djaoued, J. Robichand, O.Y. Khyzhun, Nanoscale Res. Lett. 4 (2009) 1335-1342.

[10] S. Adhikari, D. Sarkar, Electrochimica Acta 138 (2014) 115-123.

[11] M.A. Gondal, K. Hayat, M. M. Khaled, Z.H. Yamani, S. Ahmed, Int. J. Nanoparticles 4 (2011) 53-63.

[12] S. Adhikari, D. Sarkar, RSC Advances 4 (2014) 20145-20153.

[13] B. Pecquenard, S. C. Garcia, J. Livage, P. Y. Zavalij, M. S. Whittingham, R. Thouvenot, Chem. Mater. 10 (1998) 1882-1887.

[14] B. Yang, Y. Zhang, E. Drabarek, P. R. F. Barnes, V. Luca, Mater. Chem. 19 (2007) 5664-5669.

[15] M. A. Butler, J. Appl. Phys. 84 (1977) 1914-(1919).

[16] H. J. Yuan, Y. Q. Chen, F. Yu, Y. H. Peng, X. W. He, D. Zhao, D. S. Tang, Chin. Phys. B 20 (2011) 036103-036105.

[17] S. R. Bathe, P. S. Patil, Sol. Energy Mater. And Sol. Cells 91 (2007) 1097-1101.

[18] S. Papaefthimiou, G. Leftheriotis, P. Yianoulis, Electrochimica Acta 46 (2001) 2145-2150.

DOI: 10.1016/s0013-4686(01)00393-0

[19] L. Liang, J. Zhang, Y. Zhou, J. Xie, X. Zhang, M. Guan, B. Pan, Y. Xie, Scientific Reports 3 (2013) 1936-(1944).