Patent ID: 7935388

Claim:
A method of forming a quantum-dot particles layer on a substrate, comprising: (A) preparing a precursor solution containing quantum-dot particles by dissolving quantum-dot particles in a solvent, and providing an apparatus comprising a reaction chamber; a substrate supporting base; and at least one atomizer, wherein the substrate supporting base locates inside the reaction chamber for fixing the substrate, the atomizer connects to the reaction chamber or locates inside the reaction chamber, the atomizer has a gas inlet and a sample inlet, the atomizer can pressurize a mixture of a gas and a solution, and the volume concentration of the precursor solution is calculated as the following equation: [X 3 /(Y 3 +X 3 )]×n=volume concentration of the precursor solution, wherein X is a diameter of the quantum-dot particle; Y is a predetermined diameter of a droplet; n is a number of the quantum-dot particles contained in each of the droplet; and the volume concentration of the precursor solution is 2.70×10 −8 to 0.1071; (B) locating a substrate on the supporting base; (C) feeding the gas inlet and the sample inlet of the atomizer; respectively with a gas and the precursor solution prepared in the step (A); (D) generating droplets containing quantum-dot particles and spraying the generated droplets to the surface of the substrate by the atomizer; and (E) evaporating or sputtering in the reaction chamber at least one electrode layer or at least one buffer layer on the substrate.