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    題名: A complementary electrochromic system based on a Prussian blue thin film and a heptyl viologen solution
    作者: Lin, Chiao-Fen;Hsu, Chih-Yu;Lo, Hwa-Chiang;Lin, Cheng-Lan;Chen, Lin-Chi;Ho, Kuo-Chuan
    貢獻者: 淡江大學化學工程與材料工程學系
    關鍵詞: Complementary;Electrochromic device;Heptyl viologen;Prussian blue
    日期: 2011-11
    上傳時間: 2011-08-04 12:10:12 (UTC+8)
    出版者: Amsterdam: Elsevier BV * North-Holland
    摘要: A complementary electrochromic device (ECD) based on a Prussian blue (PB) thin film and a heptyl viologen (HV(BF4)2) solution was assembled and studied. An equal-volume mixture of deionized water and isopropanol solution saturated with potassium ions was used as the electrolyte solution. The structure of a PB-HV(BF4)2-based ECD (PHECD) can be formulated as (ITO/PB/HV(BF4)2 in solution/ITO), and can be switched reversibly between blue and colorless states. The time required to darken the device depends on the applied potential and the charge capacity of the PB film. A blue film was formed evenly on the bare ITO surface by deposition of HV+ during darkening of the PHECD. Under application of 0 V, it took a longer time to bleach the PHECD, due to re-oxidation and diffusion of the HV+ species back into the solution. A maximum transmittance window of 59% was obtained at 609 nm with the operating potentials of 1.0 V for darkening and 0 V for bleaching. No pre-darkening or pre-bleaching of the electrodes was needed for assembly of the PHECD.
    關聯: Solar Energy Materials and Solar Cells 95(11), pp.3074–3080
    DOI: 10.1016/j.solmat.2011.06.037
    顯示於類別:[化學工程與材料工程學系暨研究所] 期刊論文

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