期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 30, 页码 19579-19586出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b02529
关键词
inorganic perovskite nanocrystals; CsPbBr3; LED; color conversion; poly(maleic anhydride-alt-l-octadecene)
资金
- ICREA Funding Source: Custom
- Engineering and Physical Sciences Research Council [1105745] Funding Source: researchfish
Cesium lead halide (CsPbX3, X = Cl, Br, I) nanocrystals (NCs) offer exceptional optical properties for several potential applications but their implementation is hindered by a low chemical and structural stability and limited processability. In the present work, we developed a new method to efficiently coat CsPbX3 NCs, which resulted in their increased chemical and optical stability as well as processability. The method is based on the incorporation of poly(maleic anhydride-alt-1-octadecene) (PMA) into the synthesis, of the perovskite NCs. The presence of PMA in the ligand shell stabilizes the NCs by tightening the ligand binding, limiting in this way the NC surface interaction with the surrounding media. We further show that these NCs can be embedded in self-standing silicone/glass plates as down-conversion filters for the fabrication of monochromatic green and white light emitting diodes (LEDs) with narrow bandwidths and appealing color characteristics.
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