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- W2004202557 abstract "Solid-state polymer light-emitting electrochemical cells have been developed using thin films of conjugated polymers blended with solid electrolytes. The cells contain three parts: the polymer blend films as the active medium, and two contact electrodes: indium-tin oxide and aluminum. When externally biased, the conjugated polymers are p-doped and n-doped on opposite sides of the polymer layer, and a dynamic light-emitting p-n junction is formed between the doped regions. The admixed solid electrolyte provides the dopant counterions and the ionic conductivity necessary for the doping. The p-n junction is dynamic and reversible, with an internal built-in potential close to the bandgap of the redox-active conjugated polymers. Orange, green and blue lights emitted from the p-n junction have been obtained with turn-on voltage less than 3 V and external quantum efficiency higher than 2% photons/electron. In addition, a two-color light-emitting electrochemical cell has also been fabricated based on a bilayer structure consisting of two different luminescent polymers. The light-emitting p-n junction can be switched from one layer to another under different bias conditions." @default.
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- W2004202557 date "1996-06-01" @default.
- W2004202557 modified "2023-10-09" @default.
- W2004202557 title "Solid-state polymer light-emitting electrochemical cells" @default.
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- W2004202557 doi "https://doi.org/10.1016/s0379-6779(96)03693-4" @default.
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