著者

井上 英一 小門 宏 伊沢 晃

出版者

公益社団法人 応用物理学会

雑誌

応用物理 (ISSN:03698009)

巻号頁・発行日

vol.43, no.1, pp.54-55, 1974

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A new type of electrochromism was found on titanium oxide prepared from the hydroly-sis of titanium tetrachroride with dilute hydro-chloric acid. To prepare the electrochromic panel, the titanium oxide powder with or without resin binder was sandwitched between two NESA glass electrodes. By applying a DC voltage (10_??_200V) to the electrodes, the color of the layer near the cathode changed rapidly from white to dark blue or black, and the dark color disappeared quickly to the original white by cutting off the voltage. The optical density of the dark color was 0.5_??_0.6 and the half life time of the colored state was about 2 seconds at room temperature.