Manganese ion doped II-type quantum dot fluorescent material, and preparation method and application of fluorescent material
A technology of fluorescent materials and quantum dots, applied in the field of fluorescent materials, can solve the problem of low efficiency, and achieve the effects of improving quantum efficiency, long luminous life, and improving functions
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] A specific synthesis steps of manganese-doped quantum dots CdS:Mn / ZnSe / ZnS:
[0029] (1) Preparation of high-quality nucleation-doped semiconductor quantum dots CdS:Mn: In an argon atmosphere, use 0.03g of manganese stearate and 0.045g of excess S powder to react in 12ml of octadecene solution at 260°C. To obtain the crystal nucleus MnS, first inject a small amount of 0.06g zinc stearate to cover a transition layer to facilitate the diffusion of manganese, anneal at 280°C for 10-20 minutes, and then inject about 0.25-0.5g of stearin at about 230°C The thicker CdS shell material is coated with cadmium acid, and annealed for about 15-30 minutes; the obtained quantum dots are purified and dissolved in a small amount of octadecene as the crystal nucleus for the next shell coating;
[0030] (2) Preparation of doped semiconductor quantum dots CdS:Mn coated ZnSe / ZnS shell: In an argon atmosphere, the Zn precursor ZnO (2.5mmol), oleic acid OA (12.5mmol) and tri-n-octylphosphine...
Embodiment 2
[0034] According to the method in Example 1, a manganese-doped quantum dot CdS:Mn / ZnSe / ZnS fluorescent material with slightly smaller core size (diameter ~ 3.5nm) was prepared.
[0035] The obtained fluorescent material was detected according to the detection method of Example 1, and the results showed that the type II luminescence peak position was blue-shifted, which was significantly stronger than that of non-doped type II quantum dots synthesized by a similar method.
Embodiment 3
[0037] According to the method of Example 1, a manganese-doped quantum dot CdS:Mn / ZnSe / ZnS fluorescent material with a slightly larger-sized core (diameter ~ 4.5 nm) was prepared.
[0038] The obtained fluorescent material was detected according to the detection method in Example 1, and the result showed that the type II luminescence peak position was red-shifted, which was significantly enhanced than that of non-doped type II quantum dots synthesized by a similar method.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
