Patent ID: 6841082

Claim:
A method of manufacturing Er-doped silicon nano-dot arrays, the method comprising: preparing a target having a silicon region and an erbium region; including a silicon substrate opposite to the target; irradiating laser light on the target, generating a plume containing silicon ablated from the silicon region and erbium ablated from the erbium region, and depositing an Er-doped silicon film on the silicon substrate from the plume; forming a block copolymer layer composed of two kinds of polymers on the Er-doped silicon film; phase-separating the block copolymer layer into two kinds of polymer parts; selectively removing any one of the parts, into which the block copolymer layer is phase-separated, to form a mold having holes exposing portions of the Er-doped silicon film; forming metal layers for filling the holes of the mold; selectively removing the mold to pattern the metal layers and form an etch mask; and selectively etching portions of the Er-doped silicon film exposed by the etch mask to form Er-doped silicon nano-dot arrays on the silicon substrate.