Gallium sulfide quantum dot material and preparation method thereof
A technology of quantum dot materials and gallium sulfide, applied in the field of gallium sulfide quantum dot materials and its preparation, can solve the problems of non-adjustability, inability to obtain products, and narrow fluorescent emission range, and achieve low cost, simple preparation method, and simple process Effect
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Embodiment 1
[0040] The concrete steps of preparation are:
[0041] Step 1, first mix the gallium source, sulfur source, octadecene and ligand at a molar ratio of 1:0.5:80:20; where the gallium source is gallium acetylacetonate, and the sulfur source is sulfur powder , the ligand is a mixture of oleic acid, n-dodecanethiol and oleylamine to obtain a mixed solution. The mixed solution was placed in an inert atmosphere at 100°C for 10 minutes, and then reacted at 220°C for 20 minutes in an inert atmosphere; wherein the inert atmosphere was an argon atmosphere to obtain a reaction solution.
[0042] Step 2, first according to the molar ratio of the gallium source in the reaction solution, the solvent and the precipitant is the ratio of 1:50:1400, add the solvent and the precipitant successively to the reaction solution cooled under the inert atmosphere; wherein, the solvent is n-ethyl Alkanes, the precipitating agent is ethanol, and a suspension is obtained. Then, the suspension is subjecte...
Embodiment 2
[0044] Step 1, first mix the gallium source, sulfur source, octadecene and ligand at a molar ratio of 1:2.5:65:40; where the gallium source is gallium acetylacetonate, and the sulfur source is sulfur powder , the ligand is a mixture of oleic acid, n-dodecanethiol and oleylamine to obtain a mixed solution. The mixed solution was placed in an inert atmosphere at 105° C. for 8.8 minutes, and then reacted at 240° C. for 15.5 minutes in an inert atmosphere; wherein the inert atmosphere was an argon atmosphere to obtain a reaction solution.
[0045] Step 2, first according to the molar ratio of the gallium source in the reaction solution, the solvent and the precipitant is the ratio of 1:113:1075, add the solvent and the precipitant successively to the reaction solution cooled under the inert atmosphere; wherein, the solvent is n-ethyl Alkanes, the precipitating agent is ethanol, and a suspension is obtained. Then, the suspension is subjected to solid-liquid separation treatment; w...
Embodiment 3
[0047] Step 1, first mix the gallium source, sulfur source, octadecene and ligand at a molar ratio of 1:5:50:60; where the gallium source is gallium acetylacetonate, and the sulfur source is sulfur powder , the ligand is a mixture of oleic acid, n-dodecanethiol and oleylamine to obtain a mixed solution. The mixture was placed in an inert atmosphere at 110° C. for 7.5 minutes, and then reacted at 260° C. for 11 minutes in an inert atmosphere; wherein the inert atmosphere was an argon atmosphere to obtain a reaction solution.
[0048]Step 2, first according to the molar ratio of the gallium source in the reaction solution, the solvent and the precipitating agent is the ratio of 1:175:750, add the solvent and the precipitating agent successively in the reaction solution cooled under the inert atmosphere; wherein, the solvent is n-ethyl Alkanes, the precipitating agent is ethanol, and a suspension is obtained. Then the suspension is subjected to solid-liquid separation treatment;...
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