Perovskite quantum dot composite, ink, resin ink, method for manufacturing a perovskite quantum dot multilayer film, and perovskite quantum dot multilayer film

The synthesis of perovskite quantum dots with crosslinkable ligands forms a stable, hydrophobic film that addresses photodegradation and dispersion issues, enhancing luminescence by up to 1.3 times.

JP7862792B2Active Publication Date: 2026-05-21ISE CHEM IND +1
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
ISE CHEM IND
Filing Date
2022-01-24
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Perovskite quantum dots suffer from photodegradation and poor dispersion stability due to defects in the core nanocrystals, leading to reduced photoluminescence, and existing surface protection methods are inadequate in maintaining ligand stability in polar solvents and water.

Method used

A perovskite quantum dot composite is synthesized with crosslinkable ligands that form a pseudo-shell layer through a crosslinking reaction, enhancing ligand stability and forming a hydrophobic film to improve durability and luminescence properties.

Benefits of technology

The crosslinked ligand structure suppresses ligand desorption, improves water resistance, and results in a thin film with enhanced stability and luminescence properties, achieving up to 1.3 times higher photoluminescence compared to conventional films.

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Patent Text Reader

Abstract

To provide a perovskite quantum dot complex compound including a crosslinkable ligand, with compatibility between stability and emission properties after thin film formation, by synthesizing a ligand compound including a crosslinkable functional group and introducing the synthesized one into perovskite nanocrystals.SOLUTION: A perovskite quantum dot complex includes one or more crosslinkable ligand compounds surface-coordinated on perovskite nanocrystals including halogen, wherein the crosslinkable ligand compound is an organic acid compound including two or more open-chain unsaturated bonds or an organic base compound including two or more open-chain unsaturated bonds.SELECTED DRAWING: None
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