US 12,433,037 B2
Solar cell and method for preparing the same
Zhuohan Zhang, Changzhou (CN); Daming Chen, Changzhou (CN); Yunyun Hu, Changzhou (CN); Wei Liu, Changzhou (CN); Wenxian Ji, Changzhou (CN); Rui Yang, Changzhou (CN); Guanchao Xu, Changzhou (CN); Xueling Zhang, Changzhou (CN); Guangtao Yang, Changzhou (CN); and Yifeng Chen, Changzhou (CN)
Assigned to TRINA SOLAR CO., LTD., Changzhou (CN)
Filed by TRINA SOLAR CO., LTD., Changzhou (CN)
Filed on Sep. 8, 2023, as Appl. No. 18/243,803.
Claims priority of application No. 202310341102.9 (CN), filed on Mar. 31, 2023.
Prior Publication US 2023/0420593 A1, Dec. 28, 2023
Int. Cl. H10F 10/142 (2025.01); H10F 71/00 (2025.01); H10F 77/30 (2025.01)
CPC H10F 10/142 (2025.01) [H10F 71/129 (2025.01); H10F 77/311 (2025.01)] 19 Claims
OG exemplary drawing
 
1. A solar cell, comprising:
a substrate comprising a front surface and a back surface opposite to each other;
a first emitter having a first doping type;
a second emitter having a second doping type opposite to the first doping type, the first emitter and the second emitter being disposed on the back surface of the substrate;
an insulating spacing structure disposed between the first emitter and the second emitter, the first emitter and the second emitter being spaced from each other by the insulating spacing structure;
a first electrode disposed on a side of the first emitter away from the substrate and electrically connected to the first emitter;
a second electrode disposed on a side of the second emitter away from the substrate and electrically connected to the second emitter; and
a remaining doped portion, wherein a material and a doping type of the remaining doped portion are the same as those of the first emitter, and along a direction perpendicular to a thickness direction of the substrate, the remaining doped portion is disposed between the second emitter and the insulating spacing structure;
wherein the insulating spacing structure is annular shaped, the first emitter is disposed in an outer area defined by the insulating spacing structure, and the second emitter is disposed in an inner area defined by the insulating spacing structure.