Importance

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Abstract

A light-emitting device is provided, which includes a first substrate, a first pair of electrodes formed above the first substrate, a second substrate disposed apart from the first substrate, a second pair of electrodes formed above the second substrate, a selective permeable layer disposed between the first substrate and the second substrate, a first light-emitting layer disposed between the first substrate and the selective permeable layer, a second light-emitting layer disposed between the second substrate and selective permeable layer. The first light-emitting layer contains a first light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt. The second light-emitting layer contains a second light-emitting material which emits light through an electrochemical oxidation or reduction thereof and a supporting salt. The selective permeable layer is non-permeable or hardly permeable to the first and second light-emitting materials but permeable to the supporting salt.

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First Claim