Patent ID: 11876142
Assignee: SUNFLARE CO
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A PN junction, comprising a p-type CIGS semiconductor thin film layer and an n-type CIGS semiconductor thin film layer, wherein the Cu to In molar ratio in the p-type CIGS semiconductor thin film layer is within a range of 1.55 to 2, and wherein the Cu to In molar ratio in the n-type CIGS semiconductor thin film layer is within a range of 1.1 to 1.35,
wherein the PN junction has at least one of open-circuit voltage (Voc) greater than or equal to 645 mV, a short-circuit current density (JSC) greater than or equal to 34.142 mA/cm2, a fill factor (FF) greater than or equal to 74.1%, or a conversion efficiency (EFF) greater than or equal to 16.51%.