The invention belongs to the field of high-efficiency and low-cost thin film solar cells and particularly provides a novel two-sided
thin film solar cell and an industrial manufacturing method thereof. Firstly,
laser segmentation is conducted on TCO-1 (front
electrode and
electron transport materials (ETM)), an ABX3 (A=CH3NH3, B=Pd, Sn and the like, and X=I, Cl, Br and the like)
perovskite absorbing layer (the thickness ranges from 200 nm to 400 nm, the
band gap width is 1.5 eV and the
electron affinity is 3.93 eV) is deposited on TCO-1 conducting glass (the
band gap width is larger than 3.2 eV and the
electron affinity is about 4.8 eV) obtained after
laser segmentation in a dual-source coevaporation mode, samples are transferred into PECVD equipment, a gradient doped p / p<+> type hydrogenated
silicon-based thin film (the thickness ranges from 5 nm to 30 nm, the
band gap width ranges from 1.8 eV to 2.0 eV, and the
electron affinity is 3.45 eV) is deposited, and a back-side
electric field is established; after secondary
laser segmentation is immediately conducted on the samples, the samples are transferred into vacuum equipment, TCO-2 (ITO or ZnO or the like) is deposited, and finally third laser segmentation is conducted on the samples obtained after the procedures so as to establish
composite grid line electrodes. Finally, the high-efficiency and low-cost novel two-sided light-catching
solar cell is obtained.