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Preparation method of photonic crystal based white-light source

A technology of photonic crystal and white light source, which is applied in the field of high-efficiency preparation of white light source, and achieves the effects of simple method, high luminous efficiency, and reduced fluorescence quenching effect

Inactive Publication Date: 2012-09-26
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Preparation method of photonic crystal based white-light source
  • Preparation method of photonic crystal based white-light source
  • Preparation method of photonic crystal based white-light source

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Embodiment 1

[0047] (1) The emulsion containing the monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex microspheres of 220nm with a mean particle diameter of 0.3wt% (this contains the monodisperse poly( The emulsion of styrene-methyl methacrylate-acrylic acid) latex microspheres is directly obtained by preparing monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex microspheres) and placed in a constant temperature and humidity box (KCL2000 type Constant temperature and humidity box (Tokyo Physical and Chemical Instruments Co., Ltd.), under the condition that the temperature is 70°C and the humidity is 70%, the above-mentioned monodisperse poly(styrene-methyl methacrylate-acrylic acid) The latex microspheres are deposited on a common glass sheet, and a photonic crystal film composed of monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex microspheres is formed on the common glass sheet. The scanning electron micrographs are as follows: Figure 4 Show...

Embodiment 2

[0054] (1) the emulsion containing the monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex microspheres of 248nm with a mean particle diameter of 0.5wt% (this contains the monodisperse poly( The emulsion of styrene-methyl methacrylate-acrylic acid) latex microspheres is directly obtained by preparing monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex microspheres) and placed in a constant temperature and humidity box (KCL2000 type Constant temperature and humidity box (Tokyo Physical and Chemical Instrument Co., Ltd.), under the condition that the temperature is 90°C and the humidity is 90%, the above monodisperse poly(styrene-methyl methacrylate-acrylic acid) The latex microspheres are deposited on a common glass plate, and a photonic crystal film composed of monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex microspheres is formed on the common glass plate; the thickness of the photonic crystal film is about 20 μm. The forbidden ba...

Embodiment 3

[0058] (1) an emulsion containing monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex microspheres of 229nm with a mean particle diameter of 0.4wt% (the monodisperse poly( The emulsion of styrene-methyl methacrylate-acrylic acid) latex microspheres is directly obtained by preparing monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex microspheres) and placed in a constant temperature and humidity box (KCL2000 type Constant temperature and humidity box (Tokyo Physical and Chemical Instruments Co., Ltd.), under the condition that the temperature is 80°C and the humidity is 80%, the above-mentioned monodisperse poly(styrene-methyl methacrylate-acrylic acid) Latex microspheres are deposited on a common glass plate, and an opal-type photonic crystal film composed of monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex microspheres is formed on the common glass plate; the thickness of the photonic crystal film is about 14 μm . The forbidden b...

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Abstract

The invention relates to the application technology of photonic crystals, and particularly relates to a preparation method of a photonic-crystal-based white-light source, belonging to the technical field of illumination and luminescence. According to the invention, the fluorescence intensity of the fluorescent dye is selectively enhanced by photonic crystals and then the white fluorescence is obtained by combination of blue and orange two base colors. The high-molecular film doped by the fluorescent dyes emitting blue light and orange light is spin-coated on the photonic crystal film on a basis of the photonic band-gap property of the photonic crystals and the partial fluorescence resonance energy transfer principle. The partial fluorescence resonance energy transfer is occurred between two dyes under the excitation of an ultraviolet source, so as to emit blue fluorescence and orange fluorescence in different wavelengths, and the spectrum of the two-base-color fluorescence is matched under the fluorescence control function of the photonic crystals so as to obtain white fluorescence. The method provided by the invention is simple in process and low in production cost; the luminous efficiency of the white-light source is high, so that the white-light source is suitable for white background illumination, assistant light resource and white illumination light source of display devices.

Description

technical field [0001] The invention belongs to the technical field of luminescence and illumination, and relates to the application technology of photonic crystals, in particular to utilizing the property of the Bragg mirror reflection effect of photonic crystals to regulate the two-color fluorescence intensity of fluorescence resonance energy transfer donor-acceptor pairs with photonic crystals , to obtain a high-efficiency method for preparing a white light source with a spectrum satisfying the white light condition. Background technique [0002] Fluorescent dye molecules refer to substances that absorb light waves of a certain wavelength and emit light waves of another wavelength greater than the absorbed light. Fluorescent dyes have a wide range of applications in luminescence and lighting. In recent years, due to the energy crisis and the need for lighting, people have a lot of interest in the research of lighting sources, especially white light sources. The methods ...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08L25/06C08L33/12C08L33/02C09K11/06G02B1/02C30B33/00
CPCY02B20/181Y02B20/00
Inventor 鲍斌王京霞宋延林
Owner INST OF CHEM CHINESE ACAD OF SCI