Patent ID: 8216872

Claim:
A method of integrating a light-trapping layer to a thin-film solar cell, wherein said method integrates a light-trapping layer into a thin-film solar cell as a light-inlet layer, comprising steps of: (a) obtaining a substrate and further obtaining a metal back reflector layer and a first transparent conductive oxide (TCO) layer on said substrate; (b) obtaining a first absorption layer on said first TCO layer through a plasma process; (c) obtaining a second TCO layer on said first absorption layer by using a mask; (d) obtaining a plasmonic nanostructured layer on said second TCO layer, wherein said plasmonic nanostructured layer comprises a plurality of nano-particles; (e) obtaining a third TCO layer on said plasmonic nanostructured layer by using said mask; (f) etching said first absorption layer by using said third TCO layer as a shield; and (g) obtaining a metal grating on said third TCO layer by using another mask.