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Electroluminescence of Perovskite Nanocrystals with Ligand Engineering

Cited 11 time in Web of Science Cited 12 time in Scopus
Issue Date
2020-09
Citation
Trends in Chemistry, Vol.2 No.9, pp.837-849
Abstract
Light-emitting diodes (LEDs) based on metal halide perovskite nanocrystals (MHP NCs) have been rapidly developed to reach external quantum efficiencies of up to 22% with their defect-tolerant nature and extremely high color purity (full width half maxima <25 nm) that are superior to traditional inorganic colloidal quantum dots. However, highly dynamic binding of ligands impedes further increase in efficiency and induces intrinsic instability. In this review, we discuss the light emission in MHP NCs, surface chemistry regarding the surface termination of MHP crystal, and the binding of ligands to crystals. We also discuss strategies to overcome the instability of ligands to improve efficiency and stability of MHP NCs and finally achieve high efficiency of their LED devices.
ISSN
2589-5974
URI
https://hdl.handle.net/10371/171772
DOI
https://doi.org/10.1016/j.trechm.2020.07.002
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Materials Science and Engineering (재료공학부)Journal Papers (저널논문_재료공학부)
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