Active control of light is achieved by using devices such as polymer dispersion liquid crystal (PDLC) and electrochromic (EC). Sen, can provide for these components magnetron sputtering deposition of transparent electrode layer, discoloration, lithium ion conducting layer, and lithium ion storage layer of target materials, including: AZO, JZOTM, ITO, WO3, NbOx, Si, Li, Li salt electrolyte, W, Mo, Nb, Cr, etc.