Applied Physics A

, 126:98 | Cite as

Synthesis of cesium tungsten bronze by a solution-based chemical route and the NIR shielding properties of cesium tungsten bronze thin films

  • Pin-Jhen Wu
  • Sanjaya Brahma
  • Horng-Hwa LuEmail author
  • Jow-Lay Huang


In this study, hexagonal Cs0.32WO3 powders were synthesized by a simple solution-based chemical route. The experiment can be performed within a relatively short time and can easily produce large amounts of hexagonal Cs0.32WO3 powders. The CsxWO3 powders as synthesized and after heat treatment were characterized by X-ray diffraction, scanning electron microscopy, differential thermal and thermogravimetric analysis and Fourier transform infrared spectroscopy. CsxWO3 thin films were deposited by an electron beam evaporation method from sintered Cs0.32WO3 powders as the targets. The CsxWO3 films were annealed at different temperatures under Ar and Ar/H2 atmospheres. The effects of annealing on the microstructure, morphology and near-infrared (NIR) shielding properties of the Cs0.32WO3 films are discussed. The results show that the Cs0.32WO3 thin film specimen annealed for 500 °C in an Ar/H2 atmosphere has the highest transmittance (80%) in the visible light region and the lowest transmittance (42%) in the NIR region.


Cesium tungsten bronze Near-infrared shielding Optical properties Solution-based chemical route NIR shielding 



This work was financially supported by the Hierarchical Green-Energy Materials (Hi-GEM) Research Center, from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) and the Ministry of Science and Technology (MOST 107-3017-F-006 -003) in Taiwan. The authors are grateful for the financial support this work received from the Ministry of Science and Technology of Taiwan, R.O.C., under Grant no. NSC106-2221-E-006-073-MY2.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2020

Authors and Affiliations

  • Pin-Jhen Wu
    • 1
  • Sanjaya Brahma
    • 1
  • Horng-Hwa Lu
    • 2
    Email author
  • Jow-Lay Huang
    • 1
    • 3
    • 4
  1. 1.Department of Materials Science and EngineeringNational Cheng Kung UniversityTainanTaiwan (ROC)
  2. 2.Department of Mechanical EngineeringNational Chin-Yi University of TechnologyTaichungTaiwan (ROC)
  3. 3.Center for Micro/Nano Science and TechnologyNational Cheng Kung UniversityTainanTaiwan (ROC)
  4. 4.Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung UniversityTainanTaiwan (ROC)

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