Precise Color Tuning via Hybrid Light-Emitting Electrochemical Cells

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 electrol...

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Veröffentlicht in:	Nano letters 2011-02, Vol.11 (2), p.461-465
Hauptverfasser:	Norell Bader, Amanda J, Ilkevich, Anton A, Kosilkin, Ilya V, Leger, Janelle M
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Color Cross-disciplinary physics: materials science rheology Electrochemistry - instrumentation Electronics Equipment Design Equipment Failure Analysis Exact sciences and technology Lighting - instrumentation Materials science Molecular electronics, nanoelectronics Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization Nanotechnology - instrumentation Optoelectronic devices Physics Quantum Dots Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Beschreibung
Zusammenfassung:	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.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl103164z