US 12,419,153 B2
Solar cell and method for manufacturing the same
Kyoungsoo Lee, Seoul (KR); Goohwan Shim, Seoul (KR); and Ilhyoung Jung, Seoul (KR)
Assigned to JINGAO SOLAR CO., LTD., Xingtai (CN)
Filed by JINGAO SOLAR CO., LTD., Hebei (CN)
Filed on Jul. 27, 2023, as Appl. No. 18/360,776.
Application 18/360,776 is a continuation of application No. PCT/KR2022/000967, filed on Jan. 19, 2022.
Claims priority of application No. 10-2021-0013408 (KR), filed on Jan. 29, 2021.
Prior Publication US 2023/0371291 A1, Nov. 16, 2023
Int. Cl. H10K 30/40 (2023.01); H10F 71/00 (2025.01); H10K 71/12 (2023.01)
CPC H10K 30/40 (2023.02) [H10F 71/00 (2025.01); H10K 71/12 (2023.02)] 13 Claims
OG exemplary drawing
 
1. A method for manufacturing a solar cell, comprising:
forming a first photoelectric conversion part comprising a photoelectric conversion layer, a first transport layer on one side of the photoelectric conversion layer, and a second transport layer on the other side of the photoelectric conversion layer, wherein the photoelectric conversion layer comprises a perovskite compound; and
forming a first electrode, on one side of the first photoelectric conversion part, electrically connected to the first photoelectric conversion part and forming a second electrode, on the other side of the first photoelectric conversion part, electrically connected to the first photoelectric conversion part,
wherein the forming the first photoelectric conversion part comprising:
forming a first film using a first material constituting the perovskite compound;
spraying a second material constituting the perovskite compound on the first film to form a second film;
performing a first heat treatment to diffuse the first film and the second film to form the perovskite compound;
washing the perovskite compound to remove a portion of the second film residual on the perovskite compound; and
performing a second heat treatment on the photoelectric conversion layer after the washing step is performed to remove a portion of the second film,
wherein the second heat treatment is performed at a same temperature and for a same time length as the first heat treatment.