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We show here the first colloidal synthesis of double perovskite Cs2AgInCl6 nanocrystals (NCs) with a control over their size distribution. In our approach, metal carboxylate precursors and ligands (oleylamine and oleic acid) are dissolved in diphenyl ether and reacted at 105 °C with benzoyl chloride. The resulting Cs2AgInCl6 NCs exhibit the expected double perovskite crystal structure, are stable under air, and show a broad spectrum white photoluminescence (PL) with quantum yield of ∼1.6 ± 1%. The optical properties of these NCs were improved by synthesizing Mn-doped Cs2AgInCl6 NCs through the simple addition of Mn-acetate to the reaction mixture. The NC products were characterized by the same double perovskite crystal structure, and Mn doping levels up to 1.5%, as confirmed by elemental analyses. The effective incorporation of Mn ions inside Cs2AgInCl6 NCs was also proved by means of electron …
American Chemical Society
Publication date: 
10 Sep 2018

Federico Locardi, Matilde Cirignano, Dmitry Baranov, Zhiya Dang, Mirko Prato, Filippo Drago, Maurizio Ferretti, Valerio Pinchetti, Marco Fanciulli, Sergio Brovelli, Luca De Trizio, Liberato Manna

Biblio References: 
Volume: 140 Issue: 40 Pages: 12989-12995
Journal of the American Chemical Society