期刊
CHEMISTRY OF MATERIALS
卷 30, 期 19, 页码 6915-6921出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.8b03295
关键词
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资金
- European Union Seventh Framework Programme [614897]
- framework Programme for Research and Innovation Horizon 2020 (2014-2020) under the Marie Sklodowska-Curie Grant [747599]
- Spanish Ministry of Science, Innovation and Universities via the Unidad de Excelencia Maria de Maeztu [MDM-2015-0538, MAT2017-88821-R]
We report the synthesis of various binary and ternary inorganic and hybrid organic-inorganic iodide nano-crystals (NCs) starting from molecular iodine (I-2). The synthesis described herein utilizes a reaction between I, and oleylamine, which results in oleylammonium iodide, an iodide precursor that can be directly used in the preparation of iodide-based NCs. The generality of the synthesis was demonstrated by synthesizing KI, RbI, CsI, AgI, CsPbI3, FAPbI(3), Cs4PbI6, Cs3Bi2I9, FA(3)Bi(2)I(9), and RbAg4I5 NCs. Furthermore, the syntheses are facile and are carried out in vials heated on a hot plate in air. They exhibit not only narrow size distributions, but also, in the case of lead-based perovskites NCs, 70-80% photoluminescence quantum yields. To further prove the high quality of the CsPbI3 and FAPbI(3) perovskite NCs, red and infrared bright light-emitting diodes were fabricated, with external quantum efficiencies (EQEs) exceeding 3%, without following any extensive washing procedures.
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