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Indexed by:期刊论文

Date of Publication:2018-01-01

Journal:RSC ADVANCES

Included Journals:SCIE

Volume:8

Issue:63

Page Number:35973-35980

ISSN No.:2046-2069

Abstract:CsPbX3 NCs with both high photoluminescence quantum yields (PLQYs) and enhanced stability have been obtained by using high binding ability ligands. As a result, the CsPbI3 NCs prepared using palmitic acid and oleylamine as ligands have high PLQY (up to 92%), and the PLQYs of CsPbX3 perovskite NCs can be sustained for one month with a slight decrease. Impressively, the presence of palmitic acid and stearic acid can dramatically improve the chemical stability of CsPbX3 NCs. Importantly, H-1 NMR measurements indicate that much more palmitic acid remained on the surface of CsPbX3 NCs than oleic acid after purification using solvent, suggesting the higher binding ability of palmitic acid than oleic acid. Finally, the fabricated perovskite NCs were used as luminescent inks and phosphors of white light emitting diodes.