%0 Report
%A Carl M Lampert
%A Yan Ping Ma
%A Agata R Pennisi
%A Francesca Simone
%D 1990
%G eng
%T Electrical and Optical Properties of Electrochromic Devices Utilizing Polymer Electrodes
%1 <p>Windows and Daylighting Group</p>
%2 LBL-29755
%8 09/1990
%X <p>We describe the preparation, electrical and optical analysis of prototype electrochromic electrodes and solid polymer electrolyes and complete switching devices. The electrodes studied are nickel oxide, nickel-manganese oxide, nickel-cobalt oxide, and tungsten-molybdenum oxide. These electrodes were found to be useful as active electrochromics or ion storage layers. Solid polymer electrolytes were synthesized from poly(ethylene oxide), a PEO, and poly(ethyleneimine). Also, an inorganic borate silicate glass was used as an ion conductors. The best performing devices were made with a-PEO electrolytes. Electrochromic devices were made using nickel oxide/tungsten-molybdenum, and nickel oxide/nickel manganese electrode combinations. Optical spectra as a function of voltage was obtained for each device. Our best nickel oxide/a-PEO/tungsten-molybdenum device showed the photopic transmittance (T<sub>p</sub>) to be T<sub>p</sub>(bleached)=0.79 and T<sub>p</sub>(Colored)=0.39. The corresponding integrated solar transmittance was (T<sub>s</sub>) to be T<sub>s</sub>(bleached)=0.55, T<sub>s</sub>(colored)=0.35. Our best nickel oxide/nickel-manganese device showed the photopic transmittance to be T<sub>p</sub>(bleached)=0.71 and T<sub>p</sub>(colored)=0.23. The corresponding integrated solar transmittance was T<sub>s</sub>(bleached)=0.52, T<sub>s</sub>(colored)=0.44. Better device properties are expected with improvements in the solid polymer electrolyte.</p>