Perovskite patterned diaphragm obtained by phase separation means and manufacturing method thereof

Abstract

The invention relates to a perovskite patterned diaphragm obtained by a phase separation means. The perovskite patterned diaphragm comprises a diaphragm body. Patterned micropores are etched in the diaphragm body. Perovskite quantum dots are dispersed in the diaphragm body. The diaphragm body is a thin film made of high-molecular polymers. The diaphragm body is attached to a glass substrate. The invention further relates to a manufacturing method of the perovskite patterned diaphragm obtained by the phase separation means. The perovskite quantum dots are added to the patterned diaphragm obtained by the phase separation means, the advantages of the perovskite quantum dots of wide absorption peaks, narrow emission peaks, extremely high fluorescent efficiency and the like are combined with the effects of the patterned diaphragm of reducing reflection and increasing transmission by a gradient refraction index film, the effect of enhancing luminance is realized, excellent scattering performance is achieved, and the problems of dazzling, light spots and the like caused by too strong LED orientation are solved. The invention belongs to the technical field of packaging and manufacturing ofLED light-emitting materials.

Description

technical field [0001] The invention relates to the technical field of encapsulation and manufacturing of LED luminescent materials, in particular to a perovskite patterned diaphragm realized by phase separation means and a manufacturing method thereof. Background technique [0002] Quantum dots (Quantum Dots), as a light-emitting material with a particle size of nanometer, have attracted much attention because of their advantages such as wide absorption peaks, narrow emission peaks, and high fluorescence efficiency. The advantages of quantum dots based on perovskite structures are particularly prominent. As far as quantum dots are packaged with polymers to form quantum dot films, and then for optical applications, quantum dot films, as an optical film, have attracted much attention in the field of LED packaging, such as LCD backlight modules and remote fluorescent films for LED lamps. film etc. The application of quantum dot film can significantly improve the color saturat...

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Problems solved by technology

However, the reflective properties of the surface of the quantum dot film lead to the weak absorption of the incident light by the quantum dot film. In addition, the size of the quantum dot is at the nanometer level, and there is no strong light scattering phenomenon of the traditional phosphor powder, which further causes the quantum dot to incident light. The absorption of the quantum dot film is not strong, which leads to the low light conversion efficiency of the quantum dot film, and the surface patterning of the quantum dot film is an effective way to enhance the light conversion efficiency. The direct composite method of dot film cannot achieve the integrated manufacture of structure and film. Therefore, the present invention is dedicated to the design and development of a perovskite patterned diaphragm and its manufacturing method realized by means of integrated phase separation. Improve the light conversion efficiency of the film

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