▎ 摘　　要

NOVELTY - Carbon nanotube/silver nanowire composite film, is claimed. The composite film is prepared by (i) adding carbon nanotube powder to sodium dodecylbenzenesulfonate solution, dispersing and centrifuging to obtain carbon nanotube suspension, and mixing carbon nanotube suspension with silver nanowire and water to obtain dilution mixture, and subjecting diluted mixed solution to vacuum filtration to obtain a carbon nanotube/silver nanowire composite film/filter membrane, and (ii) placing the carbon nanotube/silver nanowire composite film/filter membrane on a cleaned substrate, so the carbon nanotube/silver nanowire composite film/filter membrane is pressed tightly with the surface of the substrate, and adding alcohol dropwise, and carrying out vacuum filtration, removing the filter membrane part in the carbon nanotube/silver nanowire composite membrane/filter membrane to obtain carbon nanotube/silver nanowire composite film. USE - Carbon nano tube/silver nanowire composite film is useful for preparing carbon nanotube/silver nanowire composite film/gallium arsenide based heterojunction solar cell (claimed). ADVANTAGE - The solar cell uses the carbon nano tube/silver nanowire composite film as the hole transport layer, which can greatly simplify the process and reduce the cost, at the same time, it is not limited by the high temperature resistance of the substrate, it widens the application field, and it has high light transmittance and high conductivity. It has high open circuit voltage and better photovoltaic performance, improving the photoelectric conversion efficiency. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a carbon nanotube/silver nanowire composite film/gallium arsenide based heterojunction solar cell; and a method for preapring carbon nanotube/silver nanowire composite film/gallium arsenide based heterojunction solar cell. DESCRIPTION OF DRAWING(S) - The drawing shows structure schematic diagram of carbon nanotube/silver nanowire composite film/gallium arsenide based heterojunction solar cell. 1Back electrode 2Gallium arsenide substrate 3Hole transport layer 4Passivation layer 5Insulation layer 6Front electrode