Unlock instant, AI-driven research and patent intelligence for your innovation.

Noble metal sensitized carbon quantum dot glass material for LED, preparation method and application thereof

A technology of quantum dot glass and metal-sensitized carbon, applied in sustainable buildings, energy-saving lighting, climate sustainability, etc., to achieve the effects of long life, stable physical and chemical properties, and high excitation and emission efficiency

Active Publication Date: 2021-09-03
HANGZHOU DIANZI UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the potential applications of quantum dot luminescent materials are based on single-particle quantum dots or their solutions, which brings great challenges to the stability of quantum dot materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Noble metal sensitized carbon quantum dot glass material for LED, preparation method and application thereof
  • Noble metal sensitized carbon quantum dot glass material for LED, preparation method and application thereof
  • Noble metal sensitized carbon quantum dot glass material for LED, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The first step: put 10mL of N-(β-aminoethyl-γ-aminopropyl)methyldimethoxysilane (AEAPMS) into a 50mL three-necked bottle, replace it with nitrogen for 10min, and stir vigorously. The temperature was raised to 200° C. within one hour to obtain a carbon quantum dot precursor solution. Dissolve 0.25 g of anhydrous citric acid in 1 mL of absolute ethanol, and heat to fully dissolve the anhydrous citric acid. Hot inject anhydrous citric acid ethanol solution in above-mentioned carbon quantum dot precursor solution. React for 1min and cool naturally. Samples were taken and purified three times with petroleum ether. Then dissolve in 30mL absolute ethanol to obtain carbon quantum dot ethanol solution.

[0032] The second step: 10mg HAuCl 4 Dissolve in 150mL of deionized water and heat to 180°C within 30min with stirring to obtain HAuCl 4 precursor solution. Add 3 mL of freshly prepared 30 mmol / L sodium citrate to HAuCl within 1 min 4 precursor solution, then stirred at 1...

Embodiment 2

[0041] The first step: put 10mL of N-(β-aminoethyl-γ-aminopropyl)methyldimethoxysilane (AEAPMS) into a 50mL three-necked bottle, replace it with nitrogen for 10min, and stir vigorously. The temperature was raised to 250° C. within 1 hour to obtain a carbon quantum dot precursor solution. Dissolve 0.5 g of anhydrous citric acid in 2 mL of absolute ethanol, and heat to fully dissolve the anhydrous citric acid. Hot inject anhydrous citric acid ethanol solution in above-mentioned carbon quantum dot precursor solution. Reaction 3min; natural cooling. Samples were taken and purified three times with petroleum ether. Then dissolve in 30mL absolute ethanol to obtain carbon quantum dot ethanol solution.

[0042] The second step: add 10mg AgNO 3 Dissolve in 200mL of deionized water, and heat to 150°C within 30min while stirring to obtain AgNO 3 Precursor solution; 3 mL of freshly prepared 30 mmol / L sodium citrate was added to AgNO within 1 min 3 precursor solution, then stirred at...

Embodiment 3

[0051] The first step: put 10mL of N-(β-aminoethyl-γ-aminopropyl)methyldimethoxysilane (AEAPMS) into a 50mL three-necked bottle, replace it with nitrogen for 10min, and stir vigorously. The temperature was raised to 270° C. within one hour to obtain a carbon quantum dot precursor solution. Dissolve 1.25g of anhydrous citric acid in 5mL of absolute ethanol, and heat to fully dissolve the anhydrous citric acid. Hot inject anhydrous citric acid ethanol solution in above-mentioned carbon quantum dot precursor solution. Reaction 3min; natural cooling. Samples were taken and purified three times with petroleum ether. Then dissolve in 30mL absolute ethanol to obtain carbon quantum dot ethanol solution.

[0052] The second step: 5mg Cu(NO 3 ) 2 Dissolved in 100mL of deionized water, heated to 200°C within 30min with stirring to obtain Cu(NO 3 ) 2 Precursor solution; 3 mL of freshly prepared 30 mmol / L sodium citrate was added to Cu(NO 3 ) 2 precursor solution, then stirred at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
luminanceaaaaaaaaaa
quantum efficiencyaaaaaaaaaa
Login to View More

Abstract

The invention discloses a noble metal sensitized carbon quantum dot glass material for an LED, a preparation method and application thereof. According to the method, a water-soluble carbon quantum dot solution which can emit white light under excitation of purple light or blue light and is high in quantum yield is mixed with a soluble precursor solution containing metal nanoparticles (Au, Ag and Cu), glass containing metal-sensitized white light emission carbon quantum dots is prepared by combining a sol-gel method with an atmosphere control sintering method, and the luminescent glass material is respectively compounded with a blue light chip or a purple light chip to prepare a white light LED device. The method provided by the invention has good commercial application potential, is expected to realize breakthrough of a novel material carbon quantum dot and practical application, refreshes the structure, principle, technology and performance indexes of the existing white light LED, improves the overall innovation ability of China in the field of LED device research, and realizes leap-type development of solid lighting devices.

Description

technical field [0001] The invention relates to the field of inorganic functional composite materials, in particular to a noble metal-sensitized carbon quantum dot glass material for LEDs, a preparation method and application thereof. Background technique [0002] Metallic plasmons cover the most fundamental interactions between light and matter, and have broad applications in many scientific fields, such as surface-enhanced Raman scattering, near-field optical microscopy, and localized surface plasmon resonance sensors. Furthermore, the emission of resonant molecules near plasmonic nanostructures can be enhanced by surface-enhanced fluorescence (SEF). SEF is mainly due to the interaction between the fluorophore and the excited-state nanometal structure that increases the photoexcitation rate and decay rate (both radiative and non-radiative). Therefore, the metal surface plasmon interaction can greatly affect the fluorescence properties of fluorescent materials. [0003] S...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03C1/02C03C4/12
CPCC03C1/02C03C4/12Y02B20/00
Inventor 裴浪马占峰钟家松元勇军
Owner HANGZHOU DIANZI UNIV