Precise color tuning via hybrid light-emitting electrochemical cells.

Bader, Amanda J Norell; Ilkevich, Anton A; Kosilkin, Ilya V; Leger, Janelle M · Nano Lett · 2011

basic_science · Level V

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Abstract

We report color-tunable light-emitting devices employing CdSe/ZnS quantum dots (QDs) blended into a polymer light-emitting electrochemical cell (LEC) architecture. This novel structure circumvents the charge-tunneling barrier of QDs to achieve bright, uniform, and highly voltage-independent electroluminescence, with nearly all emission generated by the QDs. By blending varying ratios of two QD materials that emit at different wavelengths, we demonstrate precise color control in a single layer device structure.

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