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    Langmuir–Schaeffer Monolayers of Colloidal Nanocrystals for Cost-Efficient Quantum Dot Light-Emitting Diodes

    Year: 2012

    Journal: Adv. Mater., 2012, 24 (32), 4414-4418, 20131009

    Authors: Hélène Bourvon, Stéphanie Le Calvez, Hani Kanaan, Sylvia Meunier-Della-Gatta, Cécile Philippot, Peter Reiss

    Organizations: CEA-LETI, MINATEC Campus, 17 rue des martyrs, 38054 Grenoble Cedex 9, France; INAC/UMR 5819 SPrAM (CEA-CNRS-UJF) LEMOH, 17 rue des martyrs, 38054 Grenoble Cedex 9, France

    Quantum dot (QD) LEDs of high color purity, and low turn-on voltage and leakage current are prepared using a solvent free method. First, a monolayer of QDs is formed at the air/water interface, which is then transferred with a PDMS stamp onto the device. The method is applicable to large substrates and reduces materials consumption as compared to other deposition techniques.