Organic-inorganic two-dimensional perovskite room-temperature phosphorescent material as well as preparation method and application thereof

A room temperature phosphorescence and perovskite technology, applied in the preparation of organic compounds, luminescent materials, organic chemistry, etc., can solve the problems of oxygen collision quenching, low luminescence quantum efficiency, low intersystem crossing rate, etc., and achieve good stability. , the synthesis method is simple, the raw material price is cheap
CN112980438AActive Publication Date: 2021-06-18NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF POSTS & TELECOMM
Publication Date
2021-06-18

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Abstract

The invention discloses an organic-inorganic two-dimensional perovskite room-temperature phosphorescent material as well as a preparation method and application thereof, and the organic-inorganic two-dimensional perovskite room-temperature phosphorescent material with long afterglow luminescence performance is synthesized by selecting an organic layer with a strong electron-donating group and an inorganic layer with a relatively strong rigid structure through molecular design. The two-dimensional perovskite room-temperature phosphorescent material disclosed by the invention has the advantages of low raw material price, simple synthesis method, capability of continuously emitting light for several seconds after an excitation light source is turned off, and the like. The material has wide potential application value in the fields of anti-counterfeiting encryption, photoelectric materials and the like, and is expected to be applied to the fields of anti-counterfeiting encryption, electroluminescent devices and the like.
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Description

technical field

[0001] The invention relates to a luminescent material, in particular to a phosphorescent material and its preparation method and application. Background technique

[0002] Afterglow materials have long-lasting luminescence ability after stopping photoexcitation, so they have a wide range of applications in optical storage, chemical sensing, biological imaging, biological detection and other fields. Compared with inorganic long-afterglow materials, organic afterglow materials with phosphorescence lifetimes exceeding 100 ms have the advantages of lower production costs, diverse synthesis processes, tunable luminescent properties, and good compatibility with various substrates.

[0003] However, it is relatively difficult for pure organic small molecules to generate ultra-long room temperature phosphorescence. The main reasons are: the low intersystem crossing rate, the radiative transition from the triplet excited state to the singlet ground state (phosphoresc...

Claims

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