In this study, the influence of temperature between 80 °C and -40 °C on the EC properties of WO3 and NiO based devices either in complementary WO3/electrolyte/NiO or in symmetrical structure WO3/electrolyte/WO3 and NiO/electrolyte/NiO, is discussed. WO3 and NiO thin films were deposited on ITO coated glasses (~25Ω/□) by reactive direct current (DC) magnetron sputtering. Laminated devices were prepared using lithium based composite polymer gel. The electrochromic properties of complementary devices and symmetrical devices were characterized in temperatures, both after storage for few hours and upon cycling. As a general trend, the device capacity decreases in low temperature and increase in high temperature, while intermediate cycling at room temperature shows slight degradation above 45 °C, and good recovery after cycling at low temperature (T < 0 °C). Interestingly, symmetrical devices behave differently in respect of NiO or WO3nature. In this presentation, further investigations on the evolution of the EC behavior with temperature will be discussed.
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