Preparation and application of high-quantum-yield cuprous halide hybrid crystal capable of emitting blue light
A sub-halide, high-quantum technology, applied in luminescent materials, compounds of group 5/15 elements of the periodic table, organic chemistry, etc., can solve the problems of non-luminescent quantum yield and difficulty in popularization and application, and achieve low cost and high efficiency Blue-emitting properties, easy-to-composite effects
Pending Publication Date: 2022-04-08
SUN YAT SEN UNIV
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However, due to the lack of luminescence mechanisms of MLCT (Metal-to-ligand charge transfer, metal-ligand charge transfer) and XLCT (Ligand charge transfer, ligand and charge transfer) in the ionic structure, most of them have no luminescence or quantum yield Extremely low and difficult to be popularized and applied
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experiment example 1
[0047] (3) Dissolve the CuI-tpp precursor (0.1 g) with 20 mL of a mixed solvent (the volume ratio of acetone and 1,4-dioxane is 5:3), and then dissolve the CuI-tpp precursor (0.1 g) with the i-bu-ted ligand solution (1 mmol Dissolve the solid in 3mL of absolute ethanol) and mix it in the reaction flask, and obtain a transparent solution after shaking, slowly volatilize overnight at room temperature, and filter the crystalline product to obtain the cuprous halide hybrid crystal CuX with ionic structure 2 (tpp) 2 (L) (X is a halogen element I or Br, tpp is triphenylphosphine, L is a cationic ligand i-bu-ted) (~60mg), ie CuX 2 (tpp) 2 (i-bu-ted) crystals. CuX 2 (tpp) 2 The molecular structure of (i-bu-ted) crystals is shown in Figure 2. At the same time, the internal quantum yield is 98% measured by Hamamatsu Photonics C9920-03 absolute quantum yield measurement system. Experimental example 1CuX 2 (tpp) 2 Characterization or performance testing of (i-bu-ted) crystals
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The invention belongs to the technical field of organic-inorganic hybrid functional materials, particularly relates to preparation and application of a blue-light-emitting high-quantum-yield cuprous halide hybrid crystal, and aims to overcome the defect that an ionic structure does not emit light or is low in quantum yield. A monomer Cu atom is coordinated with tetrahedrons of two halogen atoms and two P atoms to form a [CuX2 (tpp) 2]-anionic cluster, an alkylated triethylene diamine derivative i-buted is used as a cationic ligand, and then the cuprous halide hybrid crystal CuX2 (tpp) 2 (L) with an ionic structure is prepared, and the hybrid structure has efficient blue light emission performance and can be used for blue light emission. The internal quantum yield is up to 98%, the thermal stability is good, and the luminescent material can be processed in a solution, is easy to synthesize, environment-friendly, low in cost and free of rare earth elements, and can be applied to the field of solid-state illumination.
Description
technical field [0001] The invention belongs to the technical field of organic-inorganic hybrid functional materials, and in particular relates to the preparation and application of a cuprous halide hybrid crystal emitting blue light with high quantum yield. Background technique [0002] Organic-inorganic hybrid functional materials are hybrid materials obtained by integrating organic components and inorganic components in a single lattice, and the hybrid materials have excellent properties that the original organic and inorganic components do not have, making this This material has broad application prospects in photovoltaic cells, solid-state lighting and other fields. [0003] At present, among many organic-inorganic hybrid functional materials, the research on cuprous halide-based binary semiconductor hybrid materials has been quite mature. Due to the existence of a variety of inorganic modules and organic ligands in the structure of the cuprous halide hybrid structure ...
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Login to View More IPC IPC(8): C07F9/50C09K11/06
Inventor 刘威吕弋黎海波
Owner SUN YAT SEN UNIV