Combination solution of colloidal quantum dots and method for making the same

A method for producing a combination solution of colloidal quantum dots, comprising following steps:

• (1) dispersing a plurality of polar carrier particles in a polar solvent, and then adding a first surface modifying agent into the polar solvent, so as to treat the polar carrier particles with a first surface modification process;
• wherein the first surface modifying agent is a coupling agent selected from the group consisting of tetramethyl orthosilicate (TMOS), tetraethyl orthosilicate (TEOS), and 3-aminopropyl-triethoxysilane (APTES), or being a hydrophilic polymer selected from the group consisting of polyethylenimine (PEI) and polyethylene glycol (PEG);
• (2) dispersing a plurality of quantum dots into a non-polar solvent, and then adding a second surface modifying agent into the non-polar solvent, so as to treat the quantum dots with a second surface modification process;
• wherein the second surface modifying agent is an alkoxysilane material selected from the group consisting of 3-mercaptopropyltrimethoxysilane (3-MPS), 3-aminopropyltriethoxysilane (APTMS), 3-(trimethoxysilyl) propylmethacrylate (TMOPMA), 3-trimethoxysilylpropanethiol (MPTMS), and aminopropyltriethoxysilane (APS);
• (3) mixing the polar carrier particles been surface modified obtained from the step (1) with the quantum dots been surface modified obtained from the step (2) for making the quantum dots be attached onto the surface of the polar carrier particles;
• (4) forming at least one enclosure layer made of an acrylate ester material and then obtaining a plurality of quantum dot units;
• wherein each of the polar carrier particles and the quantum dots attached thereon is encapsulated by the enclosure layer;
• and
• (5) dispersing the quantum dot units in a liquid monomer, therefore the said combination solution of colloidal quantum dots is obtained;
• wherein the liquid monomer has a first glass transition temperature, and the acrylate ester material having a second glass transition temperature that is higher than the first glass transition temperature of the liquid monomer.