▎ 摘　　要

NOVELTY - Optically transparent and electrically conductive film comprises metal nanowires or carbon nanotubes combined with pristine graphene having a metal nanowire-to-graphene or carbon nanotube-to-graphene weight ratio of 1/99-99/1. The pristine graphene is single-crystalline and contains no oxygen and no hydrogen. USE - The optically transparent and electrically conductive film is useful as an electrode in an electro-optic device that is a photovoltaic or solar cell, LED, photo-detector, touch screen, electrowetting display, LCD, plasma display, LED display, a TV screen, a computer screen, or a mobile phone screen (all claimed). ADVANTAGE - The film exhibits an optical transparence of no less than 80%, preferably no less than 95% and sheet resistance of no higher than 300 ohm/square, preferably no higher than 30 ohm/square or high electrical conductivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for producing the optically transparent and electrically conductive film, comprising either: preparing a solution or suspension of pristine graphene in a liquid medium, dispersing metal nanowires or carbon nanotubes into the solution or suspension to form a mixture dispersion, dispensing and depositing the mixture dispersion at a controlled rate onto a supporting substrate and removing the liquid medium from the mixture dispersion deposited on the supporting substrate to form the optically transparent and electrically conductive film; or (a) preparing a first solution or suspension of pristine graphene in a first liquid medium, (b) preparing a second suspension of metal nanowires or carbon nanotubes in a second liquid medium, (c) dispensing and depositing the first solution or suspension and the second suspension, concurrently or sequentially, at a controlled rate onto a supporting substrate and (d) removing the first liquid medium and second liquid medium to form the optically transparent and electrically conductive film. DESCRIPTION OF DRAWING(S) - The figure shows a schematic drawing illustrating the processes for producing film or membrane of simply aggregated graphite or nano-graphene flakes/platelets. Natural graphite powder (100) Graphite intercalation compound (102) Graphite worms (104) Graphite sheets or foils (106) Expanded graphite flakes (108)