they also mention the degradation is reversible, by annealing in darkness, at least for experimental purpouses (your solar panel as a integral device may suffer

they also mention the degradation is reversible, by annealing in darkness, at least for experimental purpouses (your solar panel as a integral device may suffer from annealing at the right temperature, and the duration of annealing in darkness is possibly more than 20% of the degradation time, rendering it useless for "fixing" solar panels). the most important result is that this initial degradation is finally understood, the first step in preventing, now we need to come up with modified designs or manufacturing steps to eliminate the defect.