US 12,302,740 B2
Laser-sintered perovskite solar cell and manufacturing method
Yusong Sheng, Wuhan (CN); and Dang Xu, Wuhan (CN)
Assigned to HUBEI WONDER SOLAR ENERGY CO., LTD., Wuhan (CN)
Filed by HUBEI WONDER SOLAR ENERGY CO., LTD., Wuhan (CN)
Filed on Jun. 15, 2023, as Appl. No. 18/335,976.
Claims priority of application No. 202211602197.7 (CN), filed on Dec. 13, 2022.
Prior Publication US 2024/0196720 A1, Jun. 13, 2024
Int. Cl. H10K 71/40 (2023.01); H10K 30/40 (2023.01); H10K 30/50 (2023.01)
CPC H10K 71/421 (2023.02) [H10K 30/40 (2023.02); H10K 30/50 (2023.02)] 7 Claims
OG exemplary drawing
 
1. A method for manufacturing a laser-sintered perovskite solar cell, comprising:
forming a hole blocking layer on a conductive base substrate;
forming a mesoporous nanocrystalline layer on the hole blocking layer, and sintering the mesoporous nanocrystalline layer through a laser beam;
forming an insulation interlayer on the mesoporous nanocrystalline layer;
forming a counter electrode layer on the insulation interlayer, and sintering the insulation layer and the counter electrode layer; and
applying a perovskite precursor solution on the counter electrode layer to obtain the laser-sintered perovskite solar cell;
wherein the mesoporous nanocrystalline layer is sintered in presence of oxygen or ozone at a volume fraction of 45% to 99%;
wherein the mesoporous nanocrystalline layer is made of titanium dioxide; an oxygen/ozone partial pressure is controlled in such a manner that the mesoporous nanocrystalline layer forming a grain with a multi-layer shell structure including an internal layer in the crystallization state, an intermediate layer in the oxygen-deficient state and an outer layer in the crystallization state;
wherein the laser beam sintering is carried out by through spot scanning, so that each thin film is provided with a wavelike surface;
wherein the hole blocking layer, the insulation interlayer and the counter electrode layer are sintered through the laser beam.