Characterization of quantum dot/conducting polymer hybrid films and their application to light-emitting diodes.

Kwak, Jeonghun; Bae, Wan Ki; Zorn, Matthias; Woo, Heeje; Yoon, Hyunsik; Lim, Jaehoon; Kang, Sang Wook; Weber, Stefan et al. · Adv Mater · 2009

basic_science · Level V

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Abstract

Quantum dot/conducting polymer hybrid films are used to prepare light-emitting diodes (LEDs). The hybrid films (CdSe@ZnS quantum dots excellently dispersed in a conducting polymer matrix, see figure) are readily prepared by various solution-based processes and are also easily micropatterned. The LEDs exhibit a turn-on voltage of 4 V, an external quantum efficiency greater than 1.5%, and almost pure-green quantum-dot electroluminescence.