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  • Unraveling the Intercalation Chemistry of Hexagonal Tungsten Bronze and Its Optical Responses
  • 조회 수: 1028, 2016-09-30 17:51:25(2016-09-30)
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    Using state-of-the-art first-principles hybrid density-functional theory calculations, Professor Aloysius Soon and his team have investigated the thermodynamics as well as the opto-electronic properties of bulk hexagonal tungsten bronzes (i.e., alkali-metal-intercalated h-WO3 to obtain a fundamental understanding of the interplay of intrinsic charge transfer between the alkali-metal ions and the host h-WO3. In this work, they have found that the introduction of the alkali-metal ion induces a persistent n-type electronic conductivity, and dramatically reduces the optical transmittance (down to ∼28%) for infrared wavelengths while maintaining  fair optical transparency for next-generation electrochromic devices in very energy efficient chromogenic device technology.


    link : http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.5b03980

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