Crystallographic, Electric and Optical Analysis of Cs 1+ Doped H 3 PW 12 O 40 Nanocrystalline Thin Films Deposited by Microwave Assisted Chemical Bath Deposition Method

• Published in: ChemistrySelect (Weinheim) 2023-12, Vol.8 (47)
• Main Authors: Patil, Prashant B., Patil, Bajarang B., Shinde, Tukaram J., Mane, Sambhaji R.
• Format: Article
• Language: English
• ISSN: 2365-6549; 2365-6549
• DOI: 10.1002/slct.202303420

The polyoxometalates like phosphotungstic acid (PTA) (H 3 PW 12 O 40 ) and Cesium (Cs + ) doped phosphotungstic acid (Cs‐PTA) (Cs 3 ‐PW 12 O 40 ) nanocrystalline thin films were effectively deposited by microwave assisted chemical bath deposition (MA‐CBD) technique. The structural characterization of microwave aided H 3 PW 12 O 40 and Cs 3 ‐PW 12 O 40 thin films were done by Thermo gravimetric (TG) and Differential thermal analysis (DTA) techniques, X‐ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) and Energy dispersive X‐ray analysis (EDAX). The TGDTA analysis revealed that the complete decomposition process of Cs‐PTA compound is carried out at 600 °C and which is comparatively lower than that of other chemical method. The X‐ray diffractogram confirms the polycrystalline nature of the synthesized H 3 PW 12 O 40 and Cs 3 ‐PW 12 O 40 thin films having spinel cubic crystal structure. The lattice parameter of H 3 PW 12 O 40 and Cs 3 ‐PW 12 O 40 compound found to be in the range of 11.34 Å to 11.46 Å. The main absorption peaks observed nearly 800, 1000 and 1100 cm −1 confirms the formation of H 3 PW 12 O 40 and Cs 3 ‐PW 12 O 40 materials. The porous structure of nanocrystalline spherical grains morphology of H 3 PW 12 O 40 and Cs 3 ‐PW 12 O 40 films were confirmed from SEM analysis. An appropriate peaks of metal ions like P, W, O and Cs observed in EDAX spectra shows the stoichiometric formation of H 3 PW 12 O 40 and Cs 3 ‐PW 12 O 40 thin films.