Indeed. It looks like the reason it happens was identified, and they are able to reverse it on about the time scale in which it occurs, and now the goal is to f

Indeed. It looks like the reason it happens was identified, and they are able to reverse it on about the time scale in which it occurs, and now the goal is to figure out how to minimize the shallow acceptor light induced defect. My read is re-dark-annealing wont help because it reverses when you use the cell. The conclusions section is a bit less dense: https://aip.scitation.org/doi/10.1063/1.5091759 https://aip.scitation.org/doi/10.1063/1.5091759 I'm still chewing on that green box in fig9.