Quantum dot-based manufacturing method for simulating solar spectrum wled and smart light bulb

Abstract

The invention relates to the technical field of bright lighting, in particular to a solar spectrum simulation WLED manufacturing method based on a quantum dot, and the method comprises the following steps: (A) synthesizing CdSe / ZnS core-shell quantum dot solvents in various sizes; (B) synthesizing CdSe / CdS core-shell quantum dot solvents in various sizes; (C) mixing the various solvents obtained at the steps A and B, mixing the mixture solvents with epoxy resin, and performing uniform stirring; (D) dropwise adding the mixture obtained at the step C onto the surface of a GaN chip, and performing heating in a vacuum oven to obtain a WLED. The invention further discloses a smart lamp bulb made of the WLED. Due to the quantum confinement effect of the quantum dots, the CdSe core-shell quantumdots have many advantages compared with traditional fluorescent materials, such as symmetrical emission spectrum, strong fluorescence stability, narrow full width at half maximum and high fluorescencequantum yield; by changing the size and chemical composition of the semiconductor quantum dots, the fluorescence emission wavelength can cover the whole visible region, and the method is very practical.

Description

technical field [0001] The invention relates to the field of lighting technology, in particular to a quantum dot-based manufacturing method of a WLED that simulates the solar spectrum and an intelligent light bulb. Background technique [0002] As the fourth-generation lighting technology, white light-emitting diode (WLED) has the characteristics of high efficiency, long life and environmental protection. It is mainly used in lighting, display, automobile and other industries. In addition, WLED can also be used as an artificial light source. At present, most of the WLEDs are manufactured by exciting yellow YAG powder through blue chips. This traditional phosphor-converted WLED has a low color rendering index (CRI), usually lower than 80, and a high correlated color temperature (CCT). Due to the absence of red The spectral part also brings "rich blue", which will damage the health of the human retina, and in severe cases, it will also cause sleep disorders. [0003] In recen...

AI Technical Summary

Problems solved by technology

In some existing technologies, white LEDs prepared by using CdSe cores to replace YAG phosphors with QDs as the fluorescence conversion layer have good stability, color rendering index and luminous efficiency, however, WLEDs made by this method are severely lacking in spectrum

Some people mix YAG phosphor with monochrome or multicolor CdSe core-shell QDs to prepare WLEDs, this method can significantly improve WLED spectrum, but the spectral loss problem has not been completely resolved

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