This analysis reveals significant retention of efficiency gains in silicon solar cells, highlighting the impact of oxygen doping on hydrogen migration.
Key Points
Light soaking enhances silicon solar cell efficiency but can lead to degradation due to unstable Si─H bonds.
Introducing an oxygen-doped layer at the silicon interface improves light soaking retention to 57% and 70%, far exceeding standard methods.
Molecular dynamics simulations confirm that oxygen doping reduces harmful hydrogen diffusion at the a-Si:H/c-Si interface.
The study proposes a low-power UV light soaking method, achieving similar efficiency gains while consuming significantly less energy.