TY - JOUR
T1 - Comparison study of WO3 thin film and nanorods for smart window applications
AU - Ashok Reddy, G. V.
AU - Naveen Kumar, K.
AU - Shetty, Hitha D.
AU - Devaraja, C.
AU - Dhananjaya, Merum
AU - Shiva prased, H. B.
AU - Prakash, Nunna Guru
AU - Girish, K. M.
AU - Venugopal, A. R.
AU - Deepak, K.
AU - Hunagund, Shirajahammad M.
N1 - Funding Information:
This work was supported by the Wake Forest University Department of Biology, Wake Forest’s Center for Molecular Signaling, and Wake Forest’s Undergraduate Research and Creative Activities Center. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Funding Information:
This work was supported by the Wake Forest University Department of Biology, Wake Forest's Center for Molecular Signaling, and Wake Forest's Undergraduate Research and Creative Activities Center. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript
Publisher Copyright:
© 2023 Elsevier Ltd. All rights reserved.
PY - 2023
Y1 - 2023
N2 - The WO3 thin films were deposited at oxygen partial pressure of 8x10-4 mbar. A template-free straightforward hydrothermal method is employed to produce vertical alignment hierarchical WO3 nano-architectures on clear conducting substrates (3x2.5 cm2 in size and slides resistance 4 O). After being deposited at ambient temperature, the samples were air annealed at 400 °C for 4 h. The optical, electrochromic, surface and structural morphology behavior of the deposited material after annealing were studied using XRD, Raman, FTIR, SEM, electrochemical analyzer and UV-Visible spectrometer characterization methods. After annealing at 400 °C for 4 h in air, every characteristic peak are matched to a monoclinic (crystalline) WO3 phase. The Nano flower array achieved a considerable coloration efficiency (24.09 cm2/s) and low cathodic peak current (-2.03 mA) compare to the Tungsten trioxide thin film produced by the DC magnetron sputtering method. The vertically oriented geometry and the porosity space between the Nano flower, which improve H+ diffusion and provide a considerable contact area for charge-transfer processes, are primarily responsible for the improved electrochromic properties.
AB - The WO3 thin films were deposited at oxygen partial pressure of 8x10-4 mbar. A template-free straightforward hydrothermal method is employed to produce vertical alignment hierarchical WO3 nano-architectures on clear conducting substrates (3x2.5 cm2 in size and slides resistance 4 O). After being deposited at ambient temperature, the samples were air annealed at 400 °C for 4 h. The optical, electrochromic, surface and structural morphology behavior of the deposited material after annealing were studied using XRD, Raman, FTIR, SEM, electrochemical analyzer and UV-Visible spectrometer characterization methods. After annealing at 400 °C for 4 h in air, every characteristic peak are matched to a monoclinic (crystalline) WO3 phase. The Nano flower array achieved a considerable coloration efficiency (24.09 cm2/s) and low cathodic peak current (-2.03 mA) compare to the Tungsten trioxide thin film produced by the DC magnetron sputtering method. The vertically oriented geometry and the porosity space between the Nano flower, which improve H+ diffusion and provide a considerable contact area for charge-transfer processes, are primarily responsible for the improved electrochromic properties.
UR - https://www.scopus.com/pages/publications/85151457306
UR - https://www.scopus.com/pages/publications/85151457306#tab=citedBy
U2 - 10.1016/j.matpr.2023.03.052
DO - 10.1016/j.matpr.2023.03.052
M3 - Article
AN - SCOPUS:85151457306
SN - 2214-7853
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
ER -