Fixing a newly discovered solar cell flaw could boost efficiency by 2 percent

The 2019 study outlined a material defect in silicon used to produce solar cells that has previously gone undetected. It could be responsible for the 2 percent efficiency drop that solar cells can see in the first hours of use: Light Induced Degradation (LID).

via After 40 Years of Hunting, Scientists Identify a Key Flaw in Solar Panel Efficiency.