Perovskite cell and photovoltaic module

A photovoltaic module comprising a perovskite cell, wherein the perovskite cell comprises:

• a perovskite light absorption layer, a first carrier transport layer, a second carrier transport layer, a first transparent electrode layer, a second transparent electrode layer, and an optical adjustment layer;
• wherein the first carrier transport layer is disposed on a light-facing side of the perovskite light absorption layer, the second carrier transport layer is disposed on a back side of the perovskite light absorption layer, and a carrier selectivity of the first carrier transport layer is opposite to the carrier selectivity of the second carrier transport layer;
• the first transparent electrode layer is disposed on a side of the first carrier transport layer facing away from the perovskite light absorption layer, and the second transparent electrode layer is disposed on a side of the second carrier transport layer facing away from the perovskite light absorption layer;
• the optical adjustment layer is disposed between the second carrier transport layer and the second transparent electrode layer, and the second transparent electrode layer is electrically connected to the second carrier transport layer, wherein a transmittance of the optical adjustment layer for visible light is greater than or equal to a preset transmittance, and a reflectivity of the optical adjustment layer for infrared light is greater than or equal to a preset reflectivity;
• wherein the visible light is light with a wavelength less than a preset wavelength, the infrared light is light with a wavelength greater than or equal to the preset wavelength, the preset wavelength is in a range of 740 nm to 780 nm, the preset transmittance is 70~90%, and the preset reflectivity is 60~80%;
• wherein the optical adjustment layer comprises at least one low refractive index adjustment layer and at least one high refractive index adjustment layer;
• the at least one low refractive index adjustment layer and the at least one high refractive index adjustment layer are arranged alternately;
• and
• wherein a refractive index of the at least one low refractive index adjustment layer is less than or equal to 1.7, and a refractive index of the at least one high refractive index adjustment layer is greater than or equal to 2.5.