(2020) Replication Data for: Self-assembly of a robust hydrogen-bonded octylphosphonate network on cesium lead bromide perovskite nanocrystals for light-emitting diodes. Nanyang Technological University doi:10.21979/n9/gaprhl [Dataset]
Abstract
In this work we employ a post-synthetic ligand exchange treatment with octylphosphonic acid to substitute the native oleic acid ligands on cesium lead bromide nanocrystals. Using solid-state NMR we proved that the introduced octylphosphonic acid ligands bound to the nanocrystal surface in a monodentate mode, also forming inter-ligand hydrogen bonds through their free P=O and P-OH groups. The binding of this ligand improved surface passivation, increasing post-purification PLQY to 62 %. As a result, we were able to fabricate light-emitting diodes with a maximum external quantum efficiency of 7.74 %.
This record has no associated files available for download.
More information
Identifiers
Catalogue record
Export record
Altmetrics
Contributors
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.