Multicolored light-emitting diodes based on all-quantum-dot multilayer films using layer-by-layer assembly method.

Bae, Wan Ki; Kwak, Jeonghun; Lim, Jaehoon; Lee, Donggu; Nam, Min Ki; Char, Kookheon; Lee, Changhee; Lee, Seonghoon · Nano Lett · 2010

basic_science · Level V

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Abstract

A systematic analysis of the exciton-recombination zone within all-quantum dot (QD) multilayer films prepared by a layer-by-layer assembly method was made, using sensing QD layers in QD-based light-emitting diodes (QLEDs). Large area practical multicolored colloidal QLEDs were also demonstrated by patterning and placing variously colored QDs (red, orange, yellow-green, and green) in the exciton-recombination zone.