Fabrication of Novel Emissive- and Reflective-Selectable Dual Mode Display

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We fabricated novel dual-mode display (DMD) driven by electrochemical reaction. We employ electrochromism (EC) and electrochemiluminescent (ECL) as reflective and emissive mode in DMD cell, respectively. Our DMD cell shows EC properties as reflective mode under DC bias application and ECL properties as emissive mode under AC bias application. We first fabricated the DMD which has phthalate derivatives or poly (3,4- ethylene dioxythiophene) (PEDOT) as EC material and Ru(bpy)_3 complex as ECL material. It is revealed that the DMD shows color change under the application of DC voltage and emission under the application of AC voltage.