Check patentability & draft patents in minutes with Patsnap Eureka AI!

Composite of cellulose and semiconductor nanoparticles, preparation method and application in LED packaging

A technology of LED packaging and nano-particles, which is applied in semiconductor devices, chemical instruments and methods, luminescent materials, etc., can solve the problems of increased production costs and inability to mass-produce, and achieve low risk, high color rendering, and good experiment repetition sexual effect

Inactive Publication Date: 2016-08-24
JILIN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the fact that most of the traditional packaging materials are oil-soluble polymers, the quantum dots used are generally prepared by the oil phase method, which causes a significant increase in production costs and cannot be mass-produced.

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
  • Composite of cellulose and semiconductor nanoparticles, preparation method and application in LED packaging
  • Composite of cellulose and semiconductor nanoparticles, preparation method and application in LED packaging
  • Composite of cellulose and semiconductor nanoparticles, preparation method and application in LED packaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take a solution of CdTe nanoparticles stabilized by mercaptopropionic acid (the concentration of Cd element is 1.0 × 10 -3 mol / L) each 2mL, add 0.22g LiOH and 0.42g urea respectively, after dissolving, cool it to -12℃, add 0.16g, molecular weight 8.0×10 4 cellulose, and stirred vigorously to dissolve it, then put the composite solution into molds of different shapes, after 2 hours, such as figure 1 As shown, composite materials with strong fluorescence in different shapes were obtained.

Embodiment 2

[0023] Take the concentration as 0.1, 5.0×10 -2 , 2.0×10 -2 , 5.0×10 -3 and 1.0×10 -3 The diameter of mol / L is 2.8 nanometers. Each 2mL of CdTe nanoparticle solution stabilized by mercaptopropionic acid was added with 0.22g of LiOH and 0.42g of urea. 8.0×10 4 cellulose, and vigorously stirred to dissolve it, then put the composite solution into the mold, after 2 hours, as figure 2 As shown, composites containing different concentrations of nanoparticles were obtained, and its color changed from light yellow to deep yellow with the increase of the concentration of nanoparticles. The Cd element was quantitatively analyzed using an elemental analysis instrument. As the concentration of nanoparticles increased, the Cd content was also increasing (Table 1).

[0024] Table 1: Cd content in composites prepared from different concentrations of CdTe nanoparticle solutions

[0025]

Embodiment 3

[0027] Take the CdTe nanoparticle solution (wherein the Cd element content is 2.0 × 10 -3 mol / L) 2mL, add 0.21g LiOH and 0.4g urea, after dissolving, cool it to -12℃, add 0.08g, molecular weight 1.0×10 5 cellulose, and vigorously stirred to dissolve it, then put the composite solution into the mold, after 2 hours, as image 3As shown in a, a composite material with green fluorescence was obtained. And using a fluorescence spectrometer, tested its fluorescence emission spectrum, such as image 3 as shown in b.

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
sizeaaaaaaaaaa
luminous efficiencyaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a cellulose and semiconductor nanoparticle compound, and a preparation method and an application in LED (Light-emitting Diode) package, belongs to the technical field of LED package materials, and in particular relates to a compound formed by dissolving the cellulose into a semiconductor nanoparticle solution under the auxiliary action of LiOH / urea at a lower temperature and a preparation method of the compound. By using the method, a great number of compound solutions with different fluorescence colors and high stability can be obtained by regulating the size, type and concentration of the semiconductor nanoparticles; meanwhile, after being placed for a short time at a room temperature, the compound solutions can be molded into bulk phase materials with various shapes; the bulk phase materials can be used in the LED package materials so as to obtain an LED light source with high color rendering. The type of the nanoparticles is CdTe, CdSe, CdS or CdSexTe1-x; the size is 2.1-5.2 nanometers; the mass ratio of LiOH to urea to semiconductor nanoparticle solution to cellulose is 1.4-2.6 to 2.6-5 to 12.5-25 to 1.

Description

technical field [0001] The invention belongs to the technical field of LED packaging materials, and in particular relates to a compound formed by dissolving cellulose in a semiconductor nanoparticle solution at low temperature and a preparation method for the compound. The method adjusts the size, type and concentration of the semiconductor nanoparticle to A large number of complex solutions with different fluorescent colors and high stability are obtained. At the same time, the complex solution can be molded into bulk materials of various shapes after being placed at room temperature for a short time. The compound can be applied to LED encapsulation materials to obtain an LED light source with high color rendering. Background technique [0002] Light-emitting diode (LED) light source, as a new type of solid-state light source, has a long life and high light efficiency. At present, the lifespan of LED can reach 100,000 hours, which is in stark contrast to 1,000 hours of inc...

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 Patents(China)
IPC IPC(8): C09K11/88C09K11/02H01L33/50
Inventor 张皓周鼎邹昊洋刘敏杨柏
Owner JILIN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com