Patent ID: 9728605
Date: 2017-08-08
CPC Classifications: B29B,B29K,B82Y,C01B,H01L,Y10T

Claim:
1. A roll-to-roll apparatus for doping a graphene film, comprising: a first roller unit that forms a layered structure including a forming substrate, the graphene film and a first flexible substrate; a second roller unit configured to immerse the layered structure from the first roller unit into an etching solution while passing the layered structure through the second roller unit to remove the forming substrate from the layered structure, and transfer the graphene film onto the first flexible substrate; a third roller unit configured to remove the graphene film from the first flexible substrate while transferring the graphene film onto a second flexible substrate; and a fourth roller unit configured to pass the graphene film through a dopant to dope the graphene film.