[20a-C302-1~9] 6.4 Thin films and New materials

[20a-C302-7] Optical properties of electrochromic devices using WO₃/NiO multilayers

〇Yoshio Abe¹, Yui Kadowaki¹, Midori Kawamura¹, Kyung Ho Kim¹, Takayuki Kiba¹ (1.Kitami Inst. Tech.)

Keywords:electrochromic, smart window, color change

Electrochromic devices using multilayers of tungsten oxide and nickel oxide thin films were fabricated by sputtering, and their optical properties were studied. The color of the device was found to change blue, transparent, and brown by changing the applied potential to the device to -2,5, +1.0, and +2.0 V. We consider that this result is promising for application to energy-saving smart windows.