Double-particle-size quantum dot co-sensitization solar battery as well as preparation method and application of double-particle-size quantum dot co-sensitization solar battery

The invention discloses a double-particle-size quantum dot co-sensitization solar battery as well as a preparation method and an application of the double-particle-size quantum dot co-sensitization solar battery. The solar battery consists of oxide nanometer crystal porous films, double-particle-size quantum dot photosensitizers, electrolyte and counter electrodes, wherein the oxide nanometer crystal porous films are prepared on fluorine tin oxide conductive glass, and the double-particle-size quantum dot photosensitizers indicate that two kinds of quantum dots which have the same chemical ingredients but have different particle sizes are used in the quantum dot sensitization solar battery. Compared with the single-particle-size quantum dot sensitization solar battery, the double-particle-size quantum dot co-sensitization solar battery has the advantages that two kinds of quantum dots with different particle sizes respectively absorb sun light with different wavelengths, so the absorption range of the battery