Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Blue fluorescence single crystal zinc telluride nanorod as well as preparation method and application thereof

A technology of blue fluorescence and nanorods, applied in chemical instruments and methods, nanotechnology, single crystal growth, etc., can solve the problems that limit the wide application of zinc telluride nanorods, difficulty in large-scale preparation, high reaction temperature, etc., to achieve The method is simple and easy, the reaction conditions are mild, and the fluorescence yield is high.

Active Publication Date: 2013-10-02
NANJING UNIV OF TECH
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods have their own disadvantages
The conditions of the high temperature method are harsh, the reaction temperature is higher than 200°C, and the raw materials are expensive, so it is not easy to prepare on a large scale. The crystallinity of the nanorods prepared by the aqueous phase method is lower than that of the high temperature method, which limits the telluride Wide range of applications of zinc nanorods

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
  • Blue fluorescence single crystal zinc telluride nanorod as well as preparation method and application thereof
  • Blue fluorescence single crystal zinc telluride nanorod as well as preparation method and application thereof
  • Blue fluorescence single crystal zinc telluride nanorod as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of reaction precursor

[0033] Weigh 0.5 mmol zinc sulfate and dissolve it in 50 mL n-hexane, add 0.5 mmol undecylenic acid and 25 mL deionized water at the same time, stir well to form a water-oil reaction system, and bubbling nitrogen for 1 hour to obtain a reaction precursor solution.

[0034] 2. Preparation of zinc telluride single crystal nanorods

[0035] Measure 5 mL of sodium tellurium hydride with a molar concentration of 0.1M, and inject it dropwise into the reaction precursor solution under the protection of a nitrogen atmosphere, continue to stir for 2 hours, the stirring speed is 100 rpm, the water bath is heated to 25° C., and the reaction is stopped after 0.5 hours. Take the upper n-hexane phase solution and precipitate it with a large amount of ethanol, and centrifuge it at 3000 rpm for 5 min. After repeated washing and vacuum drying, the zinc telluride single crystal nanorod powder with blue fluorescence is obtained. The diameter of the nanorod ...

Embodiment 2

[0039] 1. Preparation of reaction precursor

[0040] Weigh 0.5 mmol zinc acetate and dissolve it in 20 mL chloroform, add 5 mmol oleic acid and 10 mL deionized water at the same time, stir well to form a water-oil reaction system, and bubbling nitrogen for 1 hour to obtain a reaction precursor solution.

[0041] 2. Preparation of zinc telluride single crystal nanorods

[0042] Measure 10 mL of sodium tellurium hydride with a molar concentration of 0.5M and inject it dropwise into the reaction precursor solution protected by a nitrogen atmosphere. After stirring for 2 hours, the stirring speed is 200 rpm, the water bath is heated to 50° C., and the reaction is stopped after 5 hours. The lower layer of chloroform phase solution was precipitated with a large amount of ethanol, and centrifuged at 5000 rpm for 10 min, washed repeatedly and vacuum dried to obtain zinc telluride single crystal nanorod powder with blue fluorescence. The diameter of the nanorod is 1nm, the length is 10nm, th...

Embodiment 3

[0046] 1. Preparation of reaction precursor

[0047] Weigh 10mmol zinc chloride and dissolve it in 20mL n-hexane, add 20mmol stearic acid and 20mL deionized water at the same time, fully stir to form a water-oil reaction system, and bubbling nitrogen for 1h to obtain a reaction precursor solution.

[0048] 2. Preparation of zinc telluride single crystal nanorods

[0049] Measure 20 mL of sodium tellurium hydride with a molar concentration of 0.5M and inject it dropwise into the reaction precursor solution protected by a nitrogen atmosphere. After stirring for 2 hours, the stirring speed is 300 rpm, the water bath is heated to 70° C., and the reaction is stopped after 7 hours. The upper layer of the n-hexane phase solution was precipitated with a large amount of ethanol, and centrifuged at 6000 rpm for 20 minutes, washed repeatedly and vacuum dried to obtain zinc telluride single crystal nanorod powder with blue fluorescence. The diameter of the nanorod is 3nm, the length is 20nm, th...

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

No PUM Login to View More

Abstract

The invention relates to a single crystal zinc telluride nanorod with blue fluorescence and a preparation method thereof as well as application of the nanorod in a light-emitting diode (LED) luminous device and belongs to the technical fields of semiconductor fluorescent materials and devices. The nanorod is of a single crystal structure and has the diameter of 1-12nm and the length of 3-150nm; the emission wavelength ranges from 410 to 430nm; the fluorescent quantum yield is 20-80 percent. The preparation method comprises the following steps: by taking water as an aqueous phase, by taking a long-chain ligand dissolved in an organic solution of a zinc source as an oil phase, stirring at a high speed to fully contact the aqueous phase and the oil phase in the protective gas atmosphere, and forming a precursor solution; injecting an aqueous solution of sodium hydrogen telluride into the precursor solution, stirring, heating and reacting; and precipitating, centrifuging, dispersing, removing the unreacted raw materials, thereby obtaining the single crystal zinc telluride nanorod. The prepared single crystal zinc telluride nanorod with blue fluorescence can stably emit blue fluorescence and is high in fluorescence yield.

Description

Technical field [0001] The invention relates to a fluorescent single crystal zinc telluride nanorod and a preparation method and application thereof, in particular to a blue fluorescent single crystal zinc telluride nanorod, a preparation method thereof and an application in an LED light emitting device, belonging to semiconductors The technical field of fluorescent materials and devices. Background technique [0002] Fluorescent nanorods have become a hot spot in materials science research in recent years due to their remarkable quantum confinement effect, surface effect and macroscopic quantum tunneling effect, which are different from bulk materials. At present, a series of progress has been made in the research of fluorescent nanorods in many fields such as optoelectronic devices, biomarkers and solar energy. Among the many nanorods, zinc telluride nanorods, as a direct band gap (2.26eV) semiconductor nanomaterial, are more effective in solar cells and LED light-emitting dev...

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
IPC IPC(8): C01B19/04C09K11/88C30B29/48B82Y40/00H01L33/50
Inventor 陈苏张强侯林瑞凌露霆
Owner NANJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com