Effect of tungsten oxide thin films deposited on cerium oxide nano rods for electrochromic applications

G. V. Ashok Reddy; Sheik Abdul Sattar; K. Naveen Kumar; C. S. KaliPrasad; C. Devaraja; R. Imran Jafri; B. H. Doreswamy

doi:10.1016/j.optmat.2022.113220

Effect of tungsten oxide thin films deposited on cerium oxide nano rods for electrochromic applications

G. V. Ashok Reddy, Sheik Abdul Sattar, K. Naveen Kumar, C. S. KaliPrasad, C. Devaraja, R. Imran Jafri, B. H. Doreswamy

Department of Physics, Manipal Institute of Technology, Bengaluru

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Cerium oxide Nanorods were synthesized on Fluorine-doped Tin Oxide (FTO) coated glass substrate by hydrothermal process. Optimized Tungsten Oxide (WO₃) films were coated on the top of cerium oxide (CeO₂) Nanorods by a sputter deposition method. WO₃ thin film was deposited at a constant substrate temperature of 300K under partial pressures of oxygen (ppo₂) at 8 × 10⁻⁴ mbar. X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), UV–Visible spectrometer, and cyclic voltammetry were used to analyse the films for material, optical, surface, and electrochemical properties. The improved CeO₂/WO₃ films increased the cathodic peak current which is related to their high active surface area and increased H⁺ ions intercalation in the films. In addition, the CeO₂ Nanorods/WO₃ hybrid films had a better electrochemical property in terms of the diffusion coefficient of 5.53 × 10⁻⁸ cm²/s. These structures produce considerable coloration efficiency when compared to pure WO₃ (9.88, 10.19 and, 8.14 cm²/C at 700 nm). This study predicts that how varying concentrations of cerium oxide Nano rods change WO₃ electrochemical behaviour which will help to choose the right rare earth elements and concentrations for energy-efficient smart windows.

Original language	English
Article number	113220
Journal	Optical Materials
Volume	134
DOIs	https://doi.org/10.1016/j.optmat.2022.113220
Publication status	Published - 12-2022

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

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10.1016/j.optmat.2022.113220

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@article{e00e14e5010e4d9ea42f822f9e45ef01,

title = "Effect of tungsten oxide thin films deposited on cerium oxide nano rods for electrochromic applications",

abstract = "Cerium oxide Nanorods were synthesized on Fluorine-doped Tin Oxide (FTO) coated glass substrate by hydrothermal process. Optimized Tungsten Oxide (WO3) films were coated on the top of cerium oxide (CeO2) Nanorods by a sputter deposition method. WO3 thin film was deposited at a constant substrate temperature of 300K under partial pressures of oxygen (ppo2) at 8 × 10−4 mbar. X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), UV–Visible spectrometer, and cyclic voltammetry were used to analyse the films for material, optical, surface, and electrochemical properties. The improved CeO2/WO3 films increased the cathodic peak current which is related to their high active surface area and increased H+ ions intercalation in the films. In addition, the CeO2 Nanorods/WO3 hybrid films had a better electrochemical property in terms of the diffusion coefficient of 5.53 × 10−8 cm2/s. These structures produce considerable coloration efficiency when compared to pure WO3 (9.88, 10.19 and, 8.14 cm2/C at 700 nm). This study predicts that how varying concentrations of cerium oxide Nano rods change WO3 electrochemical behaviour which will help to choose the right rare earth elements and concentrations for energy-efficient smart windows.",

author = "{Ashok Reddy}, {G. V.} and Sattar, {Sheik Abdul} and {Naveen Kumar}, K. and KaliPrasad, {C. S.} and C. Devaraja and {Imran Jafri}, R. and Doreswamy, {B. H.}",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = dec,

doi = "10.1016/j.optmat.2022.113220",

language = "English",

volume = "134",

journal = "Optical Materials",

issn = "0925-3467",

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T1 - Effect of tungsten oxide thin films deposited on cerium oxide nano rods for electrochromic applications

AU - Ashok Reddy, G. V.

AU - Sattar, Sheik Abdul

AU - Naveen Kumar, K.

AU - KaliPrasad, C. S.

AU - Devaraja, C.

AU - Imran Jafri, R.

AU - Doreswamy, B. H.

PY - 2022/12

Y1 - 2022/12

N2 - Cerium oxide Nanorods were synthesized on Fluorine-doped Tin Oxide (FTO) coated glass substrate by hydrothermal process. Optimized Tungsten Oxide (WO3) films were coated on the top of cerium oxide (CeO2) Nanorods by a sputter deposition method. WO3 thin film was deposited at a constant substrate temperature of 300K under partial pressures of oxygen (ppo2) at 8 × 10−4 mbar. X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), UV–Visible spectrometer, and cyclic voltammetry were used to analyse the films for material, optical, surface, and electrochemical properties. The improved CeO2/WO3 films increased the cathodic peak current which is related to their high active surface area and increased H+ ions intercalation in the films. In addition, the CeO2 Nanorods/WO3 hybrid films had a better electrochemical property in terms of the diffusion coefficient of 5.53 × 10−8 cm2/s. These structures produce considerable coloration efficiency when compared to pure WO3 (9.88, 10.19 and, 8.14 cm2/C at 700 nm). This study predicts that how varying concentrations of cerium oxide Nano rods change WO3 electrochemical behaviour which will help to choose the right rare earth elements and concentrations for energy-efficient smart windows.

AB - Cerium oxide Nanorods were synthesized on Fluorine-doped Tin Oxide (FTO) coated glass substrate by hydrothermal process. Optimized Tungsten Oxide (WO3) films were coated on the top of cerium oxide (CeO2) Nanorods by a sputter deposition method. WO3 thin film was deposited at a constant substrate temperature of 300K under partial pressures of oxygen (ppo2) at 8 × 10−4 mbar. X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), UV–Visible spectrometer, and cyclic voltammetry were used to analyse the films for material, optical, surface, and electrochemical properties. The improved CeO2/WO3 films increased the cathodic peak current which is related to their high active surface area and increased H+ ions intercalation in the films. In addition, the CeO2 Nanorods/WO3 hybrid films had a better electrochemical property in terms of the diffusion coefficient of 5.53 × 10−8 cm2/s. These structures produce considerable coloration efficiency when compared to pure WO3 (9.88, 10.19 and, 8.14 cm2/C at 700 nm). This study predicts that how varying concentrations of cerium oxide Nano rods change WO3 electrochemical behaviour which will help to choose the right rare earth elements and concentrations for energy-efficient smart windows.

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Effect of tungsten oxide thin films deposited on cerium oxide nano rods for electrochromic applications

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