Method of printing multi-nanoparticles with uniform surface using evaporation dynamics and surface energy control

A method of printing multi-nanoparticles, the method comprising:

• a step S1 of forming a pattern on a surface of a substrate by irradiating ultraviolet rays to a portion of the surface through a photomask;
• a step S2 of coating the substrate with a solution containing nanoparticles;
• and
• a step S3 of lowering surface energy of the coated nanoparticles,
• wherein the step S2 comprises coating the solution on the portion of the surface of the substrate irradiated with the ultraviolet rays in the step S1 at a wavelength of 100 to 500 nm for 10 seconds to 10 minutes,
• wherein the step S2 comprises performing spin coating at 1,000 to 10,000 rpm,
• wherein the coated nanoparticles are quantum dots, and the step S3 comprises applying a solution containing a perfluorodecanethiol to make perfluorodecanethiol attach to the quantum dots via ligand exchange between the quantum dots and perfluorodecanethiol, thereby lowering surface energy, and
• wherein the steps S1 through S3 are repeatedly performed multiple times.