Method for forming electroless plating electrode through selective cross-linking layer formation using laser

A method for forming an electroless plating electrode through selective cross-linking layer formation using a laser, the method comprising:

• a polymer solution preparation step of preparing a polymer solution containing a water-soluble polymer with a PVP chain structure;
• a polymer thin film layer formation step of forming a polymer thin film layer made of the polymer solution on a surface of a substrate through coating the substrate with the polymer solution;
• a selective cross-linking layer formation step of forming a selective cross-linking layer by laser heat treatment of the polymer thin film layer, wherein the laser heat treatment is performed by irradiating the polymer thin film layer with a laser while moving the laser at a speed ranging from 1 mm/s to 5 mm/s and with a focal length ranging from 1 mm to 10 mm;
• a residue removal step of removing a portion other than the portion for the selective cross-linking layer formed through the laser irradiation, wherein the residue removal step is performed by applying an ultrasound while immersing the substrate in distilled water or ethanol;
• a catalyst activation step of activating a catalyst by performing a plasma treatment on the selective cross-linking layer, wherein the plasma treatment is performed using argon gas at a flow rate of 20 sccm, a power of 100 W, and a frequency of 100 kHz for 3 minutes;
• and
• an electroless plating step of forming an electroless plating layer on an upper part of the selective cross-linking layer by performing an electroless plating process on the selective cross-linking layer, which is formed on the substrate.