Fig. 1: Solar cell parameters of devices aged under various conditions.
From: Traps and transport resistance are the next frontiers for stable non-fullerene acceptor solar cells
Samples aged in air at room temperature in the dark maintain their power conversion efficiency (PCE) over the whole aging duration of 96 h studied here. Degradation in air at room temperature under illumination is governed by losses of Jsc. Aging at elevated temperatures in air in the dark as well as in a nitrogen atmosphere regardless of illumination all show losses of Voc and FF. The pFF is stable for all aging conditions studied here.
