Back transparent conductive film and heterojunction solar cell

The utility model relates to the technical field of crystalline silicon solar cells, in particular to a back transparent conductive film and a heterojunction solar cell, the back transparent conductive film comprises a TCO layer (11) and a metal layer (12) arranged on the TCO layer (11); wherein the material of the TCO layer (11) is selected from ITO, ICO, IWO, AZO and IZTO, and the material of the metal layer (12) is selected from molybdenum, titanium, chromium, molybdenum-titanium alloy, molybdenum-chromium alloy, titanium-chromium alloy and molybdenum-titanium-chromium alloy. According to the back transparent conductive film provided by the utility model, the work function matching performance of the metal layer and the P-type doped amorphous silicon layer is good, the contact resistance can be reduced, the transmission of current carriers can be improved, and the situation that charges on the surface of the amorphous silicon are accumulated to a certain degree and then break down the amorphous silicon is prevented.