Patent ID: 8835215
Filing Date: 2014-09-16
Classification: B23K,B82Y,H01L

Abstract:
1. A method for forming superior local conductivity in self-organized nanodots on transparent conductive film induced by femtosecond laser pulses, comprising the steps of: (1) a laser-emitting crystal emitting a femtosecond laser pulse by a specific pulse number, wherein the femtosecond laser pulse has a specific pulse duration, a specific wavelength and a specific repetition rate; (2) amplifying the femtosecond laser pulse by an amplifier for making the femtosecond laser pulse with a specific pulse energy; (3) facilitating the femtosecond laser pulse hit the surface of an off-axis parabolic mirror; (4) the off-axis parabolic mirror reflecting the femtosecond laser pulse, and then making the femtosecond laser pulse hit the surface of a transparent conductive film by a specific incident angle for fully exposing the surface of the transparent conductive film; (5) a constructive interference pattern being formed on the surface of the transparent conductive film by the femtosecond laser pulses, wherein the high energy of the constructive interference pattern is adequate to break a plurality of metal-oxygen bonds in the transparent conductive film, and then to form a plurality of metal-metal bonds; and (6) a plurality of periodic ripple microstructures composed of self-organized nanodots being formed on the surface of the transparent conductive film.