| Abstrakt: |
Quantum dot superlattices (QDSLs) are attractive for artificial crystal applications, and QDSLs fabricated via solution-based methods show excellent potential for printed electronics, particularly for large-area optoelectronic devices such as flat-panel light-emitting devices (LEDs), lighting, and solar cells. In this paper, we propose percolative QDSLs (P-QDSLs), where quantum dots (QDs) are randomly dispersed in a host material, and if the QD volume fraction exceeds the percolation threshold, then percolation paths form naturally via the QDs. The P-QDSL is therefore a random QDSL involving configurational disorder. We demonstrate the formation of P-QDSLs using ZnO/MgO core/shell QDs fabricated via a solution-based method and give preliminary results for their application to the printed emission layer in LEDs (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] |
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