A highly stable perovskite quantum dot diffusion plate and its preparation method

CN120718432BActive Publication Date: 2026-07-03XIAMEN HONGSHUNXIANG PHOTOELECTRIC TECH CO LTD
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Patent Information

Application Number
CN202511219125.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-08-28
Publication Date
2026-07-03
Estimated Expiration
2045-08-28

AI Technical Summary

Technical Problem

Perovskite quantum dots have poor chemical and environmental stability, and are difficult to maintain good stability under conditions such as humidity, oxygen, strong light, and heat, which limits their long-term application in practical devices.

Method used

A SiO2@NH2 composite shell was constructed on the surface of perovskite quantum dots to form a multi-protection mechanism, including an inorganic silicon-oxygen network, organic amino segments, an ionic liquid protective layer, and a MOF crystal shell, thereby enhancing stability.

Benefits of technology

This improves the stability of perovskite quantum dot diffusers in harsh environments, effectively blocking external corrosion and inhibiting ion migration, while maintaining excellent optical performance.

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Abstract

This invention discloses a high-stability perovskite quantum dot diffusion plate and its preparation method, relating to the field of high-definition optical display technology and belonging to patent classification number G02B5 / 02. The steps are as follows: Inorganic glass raw materials are mixed and melted with CeO2, quenched, ground, and annealed to obtain pretreated glass powder; an inorganic-organic hybrid layer is prepared to coat the perovskite quantum dots, which are then treated with ionic liquid to form a double-layer protective quantum dot, and further coated with a metal-organic framework; nano-titanium dioxide and zirconium oxide are mixed to obtain composite diffusion particles; the pretreated glass powder, metal-organic framework-coated quantum dots, and composite diffusion particles are mixed to form a premix, polycarbonate particles are added, and then a silane coupling agent and an antioxidant are added, followed by melt blending and calendering to obtain the diffusion plate. This method improves the stability of quantum dots through a triple protection mechanism, and the prepared diffusion plate exhibits excellent optical performance.
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Citation Information

Patent Citations

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